For maximum return sowing of "Pusa Chetki" variety of radish is done in-
✅Explanation: "Pusa Chetki" is a variety of radish that thrives in warm conditions and is suitable for sowing during the monsoon season. It grows well in regions with moderate temperatures and sufficient moisture. Sowing in July-August ensures favorable conditions for germination, growth, and a good yield. This variety is known for its heat tolerance and can be grown throughout the year in some regions of India. It produces medium-length, stumpy, pure white radishes with a mild flavor. Released by the Indian Agricultural Research Institute (IARI) in Pusa.
The fertilizer application in mango be made in –
✅Explanation: The mango (Mangifera indica) is a tropical fruit tree known for its delicious and juicy fruits. It belongs to the Anacardiaceae family and is native to South Asia. The tree can grow up to 30 meters tall with a dense, rounded canopy of glossy, dark green leaves. Its flowers are small, white, and fragrant, blooming in panicles at the end of branches. The fruit is typically oval or kidney-shaped, ranging in color from green to yellow or red when ripe. Inside, it has a single large seed surrounded by sweet, succulent, golden-yellow flesh, prized for its rich flavor and nutritional value.October: The best time to apply fertilizer to mango trees is in October. This is because it coincides with the end of the monsoon season, when the soil is moist and the tree is preparing for its next growth phase. Applying fertilizer at this time ensures that the nutrients are readily available to the tree when it starts to grow new leaves and flowers.🛑Additional Information::Manures and fertilizers may be applied in September – October. Fertilizers are applied 45 to 90 cm away from the trunk up to the peripheral leaf drip and incorporated.Manures and Fertilizers (Kg per Tree)1 Year Old Tree:FYM: 10.00Nitrogen (N): 0.20Phosphorus (P): 0.20Potassium (K): 0.30Annual Increase:FYM: +10.00Nitrogen (N): +0.20Phosphorus (P): +0.20Potassium (K): +0.306th Year Onwards:FYM: 50.00Nitrogen (N): 1.0Phosphorus (P): 1.0Potassium (K): 1.5
The best growth regulator for controlling fruit drop is
✅Explanation: NAA is a synthetic auxin that is widely used as a plant growth regulator to control pre-harvest fruit drop in many fruit crops like mango, citrus, and guava. It helps in reducing fruit drop by promoting cell division and strengthening the attachment of fruits to the plant.NAA is known for its ability to promote root formation in cuttings, enhance fruit setting and development, and prevent premature fruit drop. It is commonly used as a foliar spray or applied directly to the plant’s tissues. NAA works by stimulating cell elongation and differentiation, influencing various physiological processes in plants. However, improper dosage or application of NAA can lead to adverse effects such as leaf burning or abnormal growth. 📌Other Options Explanations:(a) IAA (Indole Acetic Acid):IAA is a natural auxin and plays a role in plant growth and development. IAA is more involved in promoting root growth and other developmental processes.(c) MH (Maleic Hydrazide):MH is primarily used as a growth retardant to inhibit sprouting in storage crops like onions and potatoes. (d) GA3 (Gibberellic Acid):GA3 is involved in promoting fruit enlargement and flowering. In fact, it may sometimes enhance fruit drop due to its influence on growth dynamics.Related Terminology:Pre-harvest Fruit Drop: The natural phenomenon where fruits detach from the plant before maturity, leading to yield loss.Abscission Layer: A specialized zone of cells at the base of the fruit stalk that weakens and facilitates fruit detachment when mature.
F.P.O specification for R.T.S (Ready-To-Serve) beverage is - Minimum fruit juice content (%)
✅Explanation: As per F.P.O (Fruit Products Order) specifications, a Ready-To-Serve (RTS) beverage should contain a minimum of 10% fruit juice (or pulp) and not less than 10% total soluble solids (TSS), without any added carbonation. This standard ensures that the product has a sufficient fruit content to provide flavor and nutritional value while maintaining stability.Related Terminology:F.P.O (Food Safety and Standards Act of India): A legislative framework in India that governs food safety and standards.Ready-to-Serve (RTS) Beverage: A type of beverage containing fruit juice, water, sugar, and other additives, requiring no dilution before consumption.
Optimum seed rate of potato per hectare is –
✅Explanation: The optimum seed rate of potato per hectare can vary depending on several factors, including:Tuber size: Larger tubers require a lower seeding rate compared to smaller tubers as they provide more planting pieces per unit weight.Variety: Different potato varieties may have specific recommendations for seed rate based on their growth characteristics.Planting method: Whole tubers or cut pieces can be used for planting, and the seed rate will differ based on the chosen method.Soil conditions: Soil fertility and drainage can influence the number of seed potatoes required for optimal yield.However, as a general guideline, the optimum seed rate of potato per hectare falls within the range of:1500 to 2500 kg (1.5 - 2.5 quintal)
Identify the hybrid variety watermelon from this list:
✅Explanation: Arka Jyoti is a hybrid watermelon variety specifically developed by crossing two different parent plants. Hybrids are often created to achieve desirable characteristics like:Improved yield: Hybrids may produce more fruit.Disease resistance: They may be bred to withstand common diseases.Enhanced flavor or appearance: Hybrids might be sweeter, larger, or have a more appealing look.📌Other Options Explanations:(a) Charleston Gray:This is an open-pollinated variety, known for its oblong shape and resistance to diseases like Fusarium wilt.(b) Crimson Sweet:This is another open-pollinated variety, widely grown for its sweet taste and attractive red flesh. (d) Arka Jeet:This is an open-pollinated variety, and is developed for specific climatic conditions.🛑Additional Information::Best Varieties of Watermelon: Sugar Baby (Very sweet; TSS: 11-13%) Durgapura Meetha Durgapura Kesar (Yellow Flesh) Pusa Rasal Asahi Yamato Arka Jyoti Improved Shipper (an American introduction)
India is a major vegetable producer, but only a tiny fraction is processed. Approximately what percentage of vegetables in India undergo processing?
✅Explanation: India is one of the largest producers of vegetables in the world. However, the country's food processing sector, especially for vegetables, remains underdeveloped. Only about 2% of vegetables are processed, which is significantly lower compared to other countries like the USA (65–70%) and China (25–30%). This low processing rate is primarily due to factors such as inadequate infrastructure, lack of cold storage facilities, and limited market access for processed products. 🛑Additional Information::This low processing rate leads to several issues:Post-harvest losses: A significant portion of fresh produce goes to waste due to lack of proper storage and processing facilities.Limited market access: Farmers are often restricted to selling in local markets, hindering their potential income.Value addition missed: Processing can create value-added products (juices, pickles, etc.) that fetch better prices.
What vegetable crop is commonly known as gherkin?
✅Explanation: Gherkin refers to a specific type of cucumber (scientific name: Cucumis sativus) that is harvested while still immature, typically at 1–3 inches in length. These small cucumbers are specially grown for pickling purposes. Gherkins are widely used in the food industry for making pickles and are popular in cuisines worldwide.🛑Additional Information:: Pickling is the process of preserving food by different methods. Pickling can add a flavor to food by itself. The food is called pickle. There are two basic types of pickling done-o The first one includes food preserved in vinegar, an acid.o The second one is a brine solution. Brine is an aqueous solution of NaCl (Salt).
Which of the following onion varieties is particularly well-suited for pickling?
✅Explanation: Agrifound Rose is specifically bred for pickling due to its small size, firm texture, and high pungency. These characteristics make it ideal for pickling as it retains its crispness and flavor in the pickling process.
The maximum area of Kharif onion in Rajasthan is in the district of:
✅Explanation: Alwar district in Rajasthan has consistently held the largest area under Kharif onion cultivation in the state. This is attributed to favorable agro-climatic conditions, including suitable soil types and well-distributed rainfall during the Kharif season. Additionally, farmers in the region have a long-standing tradition of onion cultivation and access to necessary resources and infrastructure.Source: Rajasthan Agricultural Statistics, Crop Wise Irrigated Area (2021-22)
Protected cultivation of vegetables refers to creating a controlled environment for growing vegetables.
✅Explanation: Protected cultivation is a farming technique where crops are grown in a controlled environment that is partially or fully enclosed. The primary aim is to shield the crops from adverse weather conditions, pests, diseases, and extreme temperatures. This allows for better control over factors like temperature, humidity, and light intensity, resulting in improved crop yield and quality.Polycarbonate or polythene sheets are commonly used materials for creating these protected structures, such as greenhouses or polyhouses. They provide insulation, trap heat, and regulate light transmission, creating a favorable microclimate for vegetable growth.🛑Additional Information::Protected cultivation is taken up in special structures known as greenhouses. Depending on the covering material, different terminologies have been used in the context of greenhouse structures for instances, glasshouse, polyhouse, shade house, net house, etc.The productivity obtained under protected cultivation is three to ten times higher than open methods of cultivation depending on the crops. These technologies offer numerous advantages such as save water, increase crop production, are environment-friendly, give round the year food production, and provide jobs for residents.Crop cycle under protected cultivation depends upon market demand and to a fairly good extent upon climatic conditions if crops are being taken under naturally ventilated polyhouses or partially controlled environment.
Night blindness is caused by the deficiency of which vitamin?
✅Explanation: Vitamin A plays a crucial role in vision, particularly in low-light conditions. It is a key component of rhodopsin, a protein found in the rods of the retina. Rhodopsin is responsible for absorbing light and initiating the visual signal that is sent to the brain. A deficiency in vitamin A leads to impaired rhodopsin production, resulting in difficulty seeing in dim light, a condition known as night blindness or nyctalopia.📌Other Options Explanations:Vitamin B1 (Thiamine): Important for nerve function and energy metabolism. Deficiency causes beriberi.Vitamin B2 (Riboflavin): Involved in energy production and cellular growth. Deficiency causes ariboflavinosis.Vitamin C (Ascorbic acid): Essential for collagen synthesis, immune function, and antioxidant protection. Deficiency causes scurvy.🛑Additional Information::Other Important Vitamins:Vitamin B1: BeriberiVitamin B2: AriboflavinosisVitamin B3: PellagraVitamin B5: ParesthesiaVitamin B6: AnaemiaVitamin C: Scurvy, Swelling of GumsVitamin D: Rickets & OsteomalaciaVitamin K: Non-Clotting of Blood Fat-soluble Vitamins:Vitamin A:Sources: Milk, butter, egg, carrots, cod liver oil, tomatoes, pumpkin, green leafy vegetablesNeed: Normal growth and to keep eyes and skin healthyDeficiency Diseases: Night blindness, Irregular growth of teethVitamin D:Sources: Cheese, butter, milk, green vegetables, fish liver oil, sunlightNeed: Formation of strong bones and teethDeficiency Diseases: RicketsVitamin E:Sources: Vegetable oils, spinach, lettuce, turnip leaves, butter, milk, whole grains, nuts, seeds, leafy vegetablesNeed: Protection of cell membrane, formation of red blood cells (RBC)Deficiency Diseases: Not yet confirmedVitamin K:Sources: Cabbage, cauliflower, spinach and other green leafy vegetables, cereals, soybeansNeed: Clotting of bloodDeficiency Diseases: Excessive bleeding from woundsWater-soluble Vitamins:Vitamin B1 (Thiamin):Sources: Seafood, milk, meat, peas, cereals, green vegetablesNeed: Growth and development, releasing energy from carbohydratesDeficiency Diseases: Beri beriVitamin B2 (Riboflavin):Sources: Yeast, egg, meat, peasNeed: Body growth and red cell production, releasing energy from carbohydratesDeficiency Diseases: Skin diseases, retarded growthVitamin B3 (Niacin):Sources: Whole cereals, tomatoes, potatoes, meat and fishNeed: Healthy skin, digestion and nervous systemDeficiency Diseases: Pellagra (affects skin, alimentary canal, and nervous system)Vitamin B12:Sources: Liver, milk, eggs, fishNeed: Forming RBCDeficiency Diseases: AnaemiaVitamin C:Sources: Indian gooseberry (amla), lemons, lime, pineapple, oranges, watermelon, green peppers, tomatoes, cabbage, turnip, carrots, green mint, guavaNeed: Maintenance of ligaments, tendons, other supportive tissues and blood vesselsDeficiency Diseases: Scurvy (gums swell and bleed)
Pusa Bedana is a variety of:
✅Explanation: Pusa Bedana is a popular seedless watermelon variety developed at the Indian Agricultural Research Institute (IARI), New Delhi. It is known for its crisp texture, sweet taste, and high yield. As a seedless variety, it is particularly favored by consumers for its convenience and eating experience.It is developed at IARI, by crossing Tetra -2 (4x) X Pusa Rasal (2X). The skin of the fruits is dark green with slight markings. TSS is 12-13%. Average fruit weight is 5-6kg. The number of fruits per vine varies from 3 to 6. It takes 115-120 days for first fruit harvest. It could not become popular due to irregular fruit shape and high cost of seed.
Generally, vegetables are a good source of:
✅Explanation: Vegetables are primarily known for their rich vitamin content. They are packed with essential vitamins like Vitamin A, Vitamin C, Vitamin K, and various B vitamins. These vitamins play crucial roles in maintaining overall health, including immune function, vision, blood clotting, and energy production.🛑Additional Information::Vitamins: Vitamins are organic compounds present in small quantities and are essential for the proper growth and maintenance of the human body. They can further be classified as:o fat-soluble vitamins - A, D, E,Ko water-soluble vitamins - B and C Each vitamin has different properties, and functions & hence required in a certain amount excessive or insufficient amounts can lead to diseases. Green leafy vegetables are good sources of Vitamin A, C and B complexes.
Riverbed cultivation of cucurbits is known as.
✅Explanation: The Diara system is a traditional farming practice prevalent in South Asia, particularly in India, where cucurbits (like melons, gourds, and cucumbers) are grown on the fertile alluvial soil of riverbeds that are exposed during the dry season. This practice takes advantage of the residual moisture in the soil, the fertile sediments deposited by the river, and the absence of pests and diseases that are usually found in regular fields.📌Other Options Explanations:Plasticulture: Refers to the use of plastic materials in agriculture, such as plastic mulch, tunnels, and greenhouses.Forcing: A horticultural technique used to manipulate plant growth and development, often to achieve out-of-season production.Hydroponics: A method of growing plants without soil, where nutrients are delivered directly to the roots in a water solution.🛑Additional Information::Diara lands get created in the middle and sides of the river Ganges as a result of deposition of sands and other sediments over the time. It is mostly used to cultivate cucurbits like watermelon, Muskmelon etc. as it is flooded every year making it difficult to grow other crops.
The Improved Japanese variety of cauliflower was introduced from:
✅Explanation: It is an introduction from Israel. Plants are erect Leaves are bluish green. It cannot tolerate hot season. It is recommended for sowing in north Indian plains from July end to early August. Curds are compact, white and maturing in late November to mid-December at 16-20oC.🛑Additional Information::Some Other Varieties of Cauliflower: Dania: Developed by IARI, Kalimpong for eastern hilly areas; stress-tolerant, medium-sized curd.Early Kunwari: Early variety for Punjab, Haryana, Himachal Pradesh, Delhi; bluish-green leaves, semi-spherical curds, suitable for mid-May sowing.Hisar-1: Mid-late season, medium to large white heads, 250 q/ha yield.Improved Japanese: Introduced from Israel; erect plants, bluish-green leaves, tolerant to cold, compact white curds, for July-August sowing in northern plains.Pant Gobi-2: Developed from GBPUA&T, Pantnagar; ready from October, yields 100 q/ha.Pant Gobi-3: Synthetic variety from eight inbred lines; medium compact creamy white curds, 120 q/ha yield.Pant Gobi-4: Released from GBPUA&T; medium plants, solid round white curds, free from riceyness.Pant Shubra: Developed through recurrent selection at GBPUA&T, Pantnagar; compact, non-ricey curds, suitable for rainy season.Punjab Giant-26: Main season variety from PAU, Ludhiana; solid medium-sized white curds.Punjab Giant-35: Late season variety, compact, snow-white curds, 225 q/ha yield.Pusa Aghani: Developed by IARI, large solid white curds, 150-160 q/ha yield.Pusa Deepali: Developed from local material, medium plants, compact self-blanching white curds, recommended for sowing in late May to early June.Pusa Early Synthetic: Released by IARI in 1990, small to medium creamy white curds, suitable for early cultivation.Pusa Him Jyoti: Released by IARI for transplanting in hill tracts; solid, round white curds, 160 q/ha yield.Pusa Hybrid-2: Released by IARI, resistant to downy mildew, creamy-white compact curds, high yield (230-250 q/ha).Pusa Katki: Early variety from IARI, medium plants with bluish-green waxy leaves; maturing in October-November.Pusa Sharad: Released in 1999, early maturity, compact white curds, high yield (260 q/ha).Pusa Shubra: Erect plants, long stalks, light bluish-green leaves, compact white curds, 250-300 q/ha yield.Pusa Snowball-1: Late variety, very compact white curds, sowing from mid-September to October.Pusa Snowball-2: Suitable for late sowing, snow-white curds, ready by end of January or early February.Pusa Snowball K-1: Best quality snow-white curds, tolerant to black rot, late maturity.Pusa Synthetic: Mid-season variety, creamy-white compact curds, suitable for sowing mid to late September in North India.Pawas: Early crop, ready in 60 days after transplanting, 700-800 g curd weight.Swarna: Grown September to December; white, compact curds, 1-2.5 kg average curd weight.Summer King: Early summer variety, whitish round curds, ready in 65 days with 400-500 g curd weight.
The best time for sowing a summer crop of okra is:
✅Explanation: Okra, also known as lady's finger, is a warm-season crop that thrives in hot and humid climates. Sowing in March allows the plants to establish themselves before the peak summer temperatures arrive. This ensures optimal growth, flowering, and pod production during the warmer months.
Which of the following diseases poses the most serious threat to carrot crops?
✅Explanation: Rot diseases, particularly those caused by fungi and bacteria, are the most devastating to carrots. It is caused by various soil-borne pathogens, such as Pythium, Rhizoctonia, and Fusarium, and can severely damage the roots, leading to decay and poor harvests. They can infect carrots in the field and during storage, leading to significant crop losses. Some of the most common and destructive rot diseases include:Sclerotinia rot (white mold): This fungal disease causes a watery soft rot covered in white, cottony growth.Bacterial soft rot: This bacterial disease results in a slimy, foul-smelling rot, especially in stored carrots.Black rot: Another fungal disease that leads to black lesions and dry rot in carrots.📌Other Options Explanations:Powdery mildew: This fungal disease forms a white powdery coating on leaves and stems.Anthracnose: This fungal disease causes leaf spots and stem lesions.Downy mildew: This fungal disease primarily affects leaves, causing yellowing and downy growth. 🛑Additional Information::Crown rot: Rhizoctonia solaniSymptom:Damping-off of carrot seedlings and a crown rot later and during storageField symptoms include premature senescence and death of foliageOn carrot roots - dark brown sunken lesions or cankers near the crown or in other parts of the root – cavity spotIdentification of pathogen:Sclerotia - irregular, brown to black and 5mm in diameterFungus produces both terminal and intercalary, barrel shaped chlamydosporeMode of spread and survival:R. solani overwinters in soils as mycelia on plant debris and as dark brown sclerotia that remain in soil for long periodsR. solani can spread from plant to plant in closely spaced carrots when the canopy is fully formedEpidemiologyMore severe on muck-grown carrots Warm temperatures and wet conditions - especially when these environmental conditions occur near harvestManagement: Cultural practices that reduce crown injury and enhance soil drainage and air circulation within the canopy are recommended Plant debris from previous crops should be removed before planting carrots Carrots should not follow perennial crops such as alfalfa Quintozene – sprayed in the soil before sowing-effective control
Seed rate per hectare for hybrid tomato is:
✅Explanation: Hybrid tomato varieties generally require a lower seed rate per hectare compared to open-pollinated varieties. This is because hybrid seeds are often more expensive, and the plants tend to have a more vigorous growth habit, requiring less dense planting.150-200 g/hectare: This is the typical seed rate range for hybrid tomato varieties. It ensures optimal plant density for healthy growth, good air circulation, and maximum yield potential.🛑Additional Information::Some Hybrid Varieties of TomatoCOTH-1: High yield, suitable for tropical and subtropical regions.Pant Hybrid-2: Disease-resistant, good for both summer and winter seasons.Pant Hybrid-10: High yield, resistant to diseases, adaptable to various climates.Kt-4: High yield, disease-resistant, good shelf life.Pusa Hybrid-1-4: High yield, suitable for fresh market and processing, medium-sized fruits.Arka Shreshta: Early-maturing, high yield, disease-resistant, large fruits.Arka Vardan: High yield, adaptable, medium to large fruits, good shelf life.Arka Abhijit: Early-maturing, disease-resistant, medium-sized fruits.Navell 1 & 2 (Sandoz): High yield, disease-resistant, firm fruits with good shelf life.Rupali: Disease-resistant, suitable for fresh market and processing, large fruits.Sonali: High yield, disease-resistant, firm fruits.MTH 6: High yield, disease-resistant, suitable for summer and rainy seasons.
'Pusa Naveen' is a variety of:
✅Explanation: 'Pusa Naveen' is a popular variety of bottle gourd developed by the Indian Agricultural Research Institute (IARI). This variety is known for its high yield, disease resistance, and excellent fruit quality. The fruits are light green, smooth, and have a cylindrical shape.🛑Additional Information::Some other varieties of Bottle gourd:  IIHR, BangaloreArka Bahar: Straight fruits, medium-sized (1 kg), light green, yields 40-50 t/ha. IARI, New DelhiPusa Naveen: Cylindrical, straight fruits, average weight 550 g.Pusa Summer Prolific Long (PSPL): Long fruits (40-50 cm).Pusa Summer Prolific Round (PSPR): Round fruits (15-18 cm diameter).Pusa Sandesh: Round green fruits (600 g), early variety (55-60 days), yields 29-32 t/ha.Pusa Meghdoot: F1 hybrid (PSPL × Sel.2), long and light green fruits.Pusa Manjari: F1 hybrid (PSPR × Sel.11), round and light green fruits.Pusa Hybrid 3: F1 hybrid, green club-shaped fruits, yields 42.5 t/ha.NDAU&T, Faizabad, UPNarendra Rashmi: Tolerant to pumpkin beetle, powdery and downy mildew, bottle-shaped fruits (1 kg), yields 30 t/ha.Punjab Agricultural University, LudhianaPusa Komal: Medium-sized, oblong fruits, CMV tolerant, early harvest (70 DAS), yields 40 t/ha.Punjab Round: Round, light green fruits, yields 15.5 t/ha.CSAUA&T, KanpurKalyanpur Long Green: Long fruits, pointed blossom end, yields 30 t/ha in 120 days.Azad Nutan: Early variety, long-necked fruits (1.5 kg).MPAU, RahuriSamrat: Cylindrical, crook-neck-free fruits (30-40 cm), greenish-white, weighs 700-800 g, yields 43 t/ha.CBPUA&T, PantnagarPant Sankar Lauki 1: Medium-long fruits, F1 hybrid, released by CVRC in 1999.TNAU, CoimbatoreCO.1: Pale green, bottle-shaped fruits with narrow neck, yields 25-30 t/ha.
The typical sowing period for the Pusa Chetki variety of radish is:
✅Explanation: Pusa Chetki is a radish variety well-suited for the Indian climate. While it can tolerate some heat, it's best sown in the spring season when the weather starts to warm up but hasn't reached peak summer temperatures. This allows for optimal growth and root development before the plant bolts (goes to seed) due to heat.Why March-April is Ideal:Temperature: The cooler temperatures in March-April are favorable for germination and early growth.Day Length: The lengthening days in spring promote leaf and root development.Avoidance of Bolting: Sowing in March-April allows for harvest before the high temperatures of summer, which can cause the plant to bolt and reduce the quality of the roots.🛑Additional Information::HillsWhite Icicle: White, long, cylindrical roots with a mild taste.Scarlet Globe: Red, round, smooth roots with a spicy flavor.Rapid Red White Tipped: Red skin with white tips, quick-growing variety.PlainsCo 1: Early maturing, white, cylindrical roots, good for cultivation in plains.Pusa Rashmi: Red, round, high-yielding variety, suitable for plains.Pusa Chetki: White, fast-growing, small, cylindrical roots, ideal for early sowing.Pusa Desi: White, long, cylindrical roots with good taste, suited for traditional cultivation.Japanese White: White, cylindrical roots with smooth texture, mild flavor.Arka Nishant: Red, round, early maturing variety with high yield.
Which vegetable variety is 'Pusa Early Dwarf'?
✅Explanation: 'Pusa Early Dwarf' is a popular tomato variety developed by the Indian Agricultural Research Institute (IARI), New Delhi. It is known for its early maturity and dwarf growth habit, making it suitable for cultivation in both open fields and greenhouses.Key Characteristics of Pusa Early Dwarf:Early Maturity: It takes about 75-80 days to mature after transplanting.Dwarf Growth Habit: The plants are compact and bushy, reaching a height of around 50-60 cm.Fruit Size and Shape: It produces medium-sized, flattish-round fruits with a yellow stem end.Yield: It offers a good yield of around 35 tonnes per hectare.Uses: Suitable for both table use and processing.
Which of the following fruits is commonly affected by blossom-end rot disease?
✅Explanation: Watermelon is a common fruit that is susceptible to blossom-end rot. This physiological disorder is caused by calcium deficiency in the fruit, often resulting from inconsistent watering or nutrient imbalances. Why Watermelons are Susceptible: Rapid Growth: Watermelons grow quickly, outpacing calcium supply. Calcium Mobility: Calcium is not easily transported within the plant. Water Stress: Fluctuating moisture levels disrupt calcium uptake. High Temperatures: Increase water loss and limit calcium uptake. Nutrient Imbalances: Excess nitrogen favors vegetative growth over fruit development. Cultivar Susceptibility: Some varieties are more prone to blossom-end rot.
'Poinsett' is a variety of which vegetable?
✅Explanation: The Poinsett cucumber is a popular variety known for its crisp texture, mild flavor, and suitability for slicing. It is a classic, open-pollinated slicing cucumber that was particularly popular in the 1980s and 1990s. Poinsett cucumbers are generally 7-8 inches long with a 2-2.5-inch diameter,
Optimum time for sowing fenugreek variety 'Kasuri' is –
✅Explanation: The optimum time for sowing the 'Kasuri' variety of fenugreek is in September for most regions in India. While October may be suitable in some regions with milder climates, September is generally preferred for optimum results. Fenugreek is a cool-season crop that thrives in cooler temperatures. Sowing in September allows the plant to establish itself before the onset of winter, and it matures during the cooler months of spring. This results in better growth and higher yields.🛑Additional Information::Some other varieties of Fenugreek: Lam Selection 1Parentage: Selection from germplasmInstitution: ANGRAU, APSalient Features: Tolerant to powdery mildew, root rot, caterpillars, and aphids.Pusa Early BunchingParentage: NAInstitution: IARISalient Features: Resistant to downy mildew and rots.Rajendra KrantiParentage: Pure line selection from Reghunathpur localInstitution: COA, MurzhapurSalient Features: Tolerant to leaf spot, suitable for intercropping.Hissar SonaliParentage: Pure line selection from localInstitution: HAU, HaryanaSalient Features: Moderately tolerant to root rot and aphids.Co.1Parentage: Selection from germplasmInstitution: TNAUSalient Features: Dual-purpose variety, tolerant to root rot.RMt-1Parentage: Pure line selection from Naguar localInstitution: RAU, JobnerSalient Features: Moderately resistant to root rot and tolerant to powdery mildew.RMt-143Parentage: Pure line selection from localInstitution: RAU, JobnerSalient Features: Seeds mature in 140-150 days, moderately resistant to powdery mildew.
The mango is said to have originated from -
✅Explanation: The mango (Mangifera indica) is believed to have originated in the Indo-Burma region, which encompasses parts of northeastern India, Bangladesh, and northwestern Myanmar. This region is considered the center of diversity for mangoes, with numerous wild and cultivated varieties found there. The mango has been cultivated in this region for thousands of years and has spread to other parts of the world through human migration and trade.
Which of the following is the richest source of energy?
✅Explanation: Fats are the richest source of energy among the macronutrients. Each gram of fat provides approximately 9 calories, while carbohydrates and proteins provide about 4 calories per gram. This higher energy density makes fats an efficient way for the body to store energy.🛑Additional Information:: Fats:o Fats are the most energy-efficient form of food.o Fat molecules consist of primarily carbon and hydrogen atoms and some of them essential for diet.o Fats provide a source of concentrated energy as well as the fat-soluble vitamins A, D, E, and K.o It is needed for hormone metabolism, healthy skin and hair, tissue repair, protecting the internal organs and to prevent excessive loss of body heat.
Vitamin C content of food can be increased by -
✅Explanation: Sprouting is the process of germinating seeds, grains, or legumes. During sprouting, the vitamin C content of these foods increases significantly. This is because sprouting activates enzymes that convert complex carbohydrates into simpler sugars and also synthesize vitamin C. Sprouting also increases the bioavailability of other nutrients, making them easier for the body to absorb.🛑Additional Information:: Germination/sprouting is a process in which small shoots come out of the dal or cereal when these are kept with a small amount of water. The time and water that each grain or pulse or legume needs for soaking and sprouting are different. Normally 8-16 hours are needed for soaking and 12-24 hoursfor sprouting depending upon the season.  The advantages of sprouting food items are:o It leads to an increase in vitamin C and whole B-complex.
The deficiency of which nutrient causes scurvy?
✅Explanation: Scurvy is a disease caused by a severe deficiency of vitamin C (ascorbic acid) in the diet. Vitamin C is essential for the formation of collagen, a protein that plays a vital role in the structure and function of various tissues in the body, including skin, blood vessels, bones, and cartilage.📌Other Options Explanations:(a) Iron: Iron deficiency causes anemia, a condition characterized by a lack of red blood cells.(b) Vitamin E: Vitamin E deficiency can cause neurological problems and muscle weakness.(c) Vitamin D: Vitamin D deficiency causes rickets in children and osteomalacia in adults, both of which are characterized by weak bones.🛑Additional Information:Vitamin C:o Vitamin C, also known as ascorbic acid.o It is found in various foods and sold as a dietary supplement.o It prevents and treats scurvy.o It is an essential nutrient involved in the repair of tissue and the enzymatic production of certain neurotransmitters.o It is important for the immune system to function also functions as an antioxidant.
Tocopherol is another name of -
✅Explanation: Tocopherol is a group of fat-soluble organic compounds with antioxidant properties. Alpha-tocopherol is the most biologically active form and is the one most commonly referred to as vitamin E. It is essential for human health, playing a role in protecting cells from damage caused by free radicals.🔑Key Points  Vitamin E is tocopherol. Vitamin E represents a group of compounds that contain both tocopherol and tocotrienol.o It is good for the immune system and it fights toxins.o It is a fat-soluble vitamin.o It is a very powerful antioxidant.o Weak muscles and fertility problems are signs of deficiency of vitamin E.o Its deficiency also causes hair damage and skin problems.🛑Additional Information::Vitamin A: RetinolVitamin B1: ThiamineVitamin B2: RiboflavinVitamin B12: CyanocobalaminVitamin C: Ascorbic acidVitamin D: Ergocalciferol (D2), Cholecalciferol (D3)Vitamin K: Phylloquinone
Which of the following would contain the least amount of protein on a 100 gm basis?
✅Explanation: Papaya is a fruit, and fruits generally have a low protein content compared to other food groups. Papaya contains typically less than 1 gram per 100 grams. Meat, milk, and pulses are all known for being good sources of protein.📌Other Options Explanations:(a) Meat: High in protein, usually around 20-30 grams per 100 grams, depending on the type.(b) Milk: Contains moderate protein, typically around 3 grams per 100 grams.(c) Pulses: High in protein, typically around 20-25 grams per 100 grams.
Iodine is used to enrich -
✅Explanation: Iodine is an essential trace element that is crucial for the production of thyroid hormones, which regulate metabolism and growth. Iodine deficiency can lead to a variety of health problems, including goiter (enlarged thyroid gland) and hypothyroidism. To prevent iodine deficiency, many countries add iodine to table salt, a process known as iodization. Iodized salt is a simple and effective way to ensure that people get enough iodine in their diet. 🛑Additional Information:: Iodised salt is table salt mixed with a minute amount of potassium iodide of the element iodine. The ingestion of iodine prevents iodine deficiency. Deficiency also causes thyroid gland problems, including "endemic goitre". Iodine is a micronutrient and dietary mineral that is naturally present in the food supply in some regions, especially near sea coasts. Where natural levels of iodine in the soil are low and the iodine is not taken up by vegetables, iodine added to salt provides the small but essential amount of iodine needed by humans.
Vitamin E is used to enrich -
✅Explanation: Vitamin E is a fat-soluble vitamin that is naturally present in certain oils, such as wheat germ oil, sunflower oil, and safflower oil. It is often added to other oils as a supplement to increase their nutritional value and extend their shelf life, as vitamin E acts as an antioxidant,🛑Additional Information:: The Tocopherol chemical is related to vitamin E. Vitamin E, a fat-soluble compound found principally in certain plant oils and the leaves of green vegetables. Wheat-germ oil is a particularly rich source of vitamin E. Vitamin E, first recognized in 1922, was first obtained in a pure form in 1936.it was identified chemically in 1938. A number of similar compounds having vitamin E activity and classified as tocopherols or tocotrienols have been isolated. Vitamin E formula is C29H50O2. Vitamin E is a source of powerful plant-based antioxidants found in many nuts, seeds, vegetables, and oils, making it easy to incorporate into your diet. Top Foods High in Vitamin E are:o Wheat Germ Oil.o Almonds.o Sunflower Seeds.o Pine Nuts.o Avocado.o Peanut Butter.o Fisho Red Bell Peppers.
Which of the following is considered a complete food?
✅Explanation: Milk is considered a complete food because it contains all the essential nutrients required for growth and development, including carbohydrates, proteins, fats, vitamins, and minerals. It is a rich source of calcium, vitamin D, and other nutrients important for bone health. Milk is also a good source of high-quality protein, which is necessary for building and repairing tissues.📌Other Options Explanations:(a) Ghee: Ghee is clarified butter and primarily consists of fat. It lacks other essential nutrients like carbohydrates, proteins, and many vitamins and minerals.(b) Honey: Honey is a natural sweetener mainly composed of sugars. While it has some trace minerals and antioxidants, it lacks essential nutrients like protein, fat, and vitamins.(c) Spinach: Spinach is a leafy green vegetable and a good source of vitamins, minerals, and fiber.
Central Institute for Arid Horticulture is situated at
✅Explanation: The Central Institute for Arid Horticulture (CIAH) is located in Bikaner, Rajasthan, India. It operates under the Indian Council of Agricultural Research (ICAR) and focuses on research and development of horticultural crops suitable for arid and semi-arid regions. The institute aims to improve the productivity and sustainability of horticulture in these challenging environments.🔑Key Points  The ICAR (Indian Council of Agricultural Research) - Central Institue for Arid Horticulture is involved in the research and development work of horticultural fruit and vegetable since 1993.o Location - Beechwal, Bikanero The recurrent drought and extreme aridity are common phenomena.o The soil of the area is sandy, desertic, poor in fertility and water holding capacity.
Internal fruit necrosis in aonla (Indian gooseberry) is due to -
✅Explanation: Internal fruit necrosis in aonla is a physiological disorder primarily caused by boron deficiency. Boron is an essential micronutrient required for cell wall formation, pollen germination, and fruit development. When aonla trees lack sufficient boron, the fruit's inner flesh can turn brown or black, leading to internal necrosis. This can significantly reduce fruit quality and yield.📌Other Options Explanations:(a) Zinc deficiency: Zinc deficiency can cause other problems in aonla, like leaf chlorosis and stunted growth.(b) Iron deficiency: Iron deficiency also causes chlorosis.(c) Manganese deficiency: Manganese deficiency can lead to interveinal chlorosis.🔑Key Points  Amla is known as Indian gooseberry. They are rich in vitamin C. They have the property of blood thinner. Lowers the blood sugar level.🛑Additional Information: Indian gooseberry: Scientific name: Phyllanthus emblica or Emblica officinalis Family: Euphorbiaceae Origin: subtropical South Asian countries Chromosome Number: 2n=26
Flower initiation in fruit plants is favored by -
✅Explanation: Flower initiation in fruit plants is favored by a proper carbon-to-nitrogen (C/N) ratio. This means that the plant needs a balanced amount of carbohydrates (carbon) and proteins (nitrogen) for optimal flower development. A higher C/N ratio generally promotes flowering, while a lower C/N ratio favors vegetative growth.📌Other Options Explanations:(a) Leaf drop: Leaf drop usually occurs due to stress or seasonal changes.(b) Luxuriant vegetative growth: Excessive vegetative growth can actually inhibit flower initiation as the plant may focus on growing leaves and stems.(c) Insects and disease attack: While insects and diseases can affect plant health, they can harm the plant.
For preserving Jamun juice, which preservative is used?
✅Explanation: Sodium benzoate is a common preservative used in acidic foods and beverages, including Jamun juice. It works by inhibiting the growth of bacteria, yeast, and mold, which can cause spoilage. Sodium benzoate is considered safe for consumption in small amounts and is often used in combination with heat treatment (pasteurization) for effective preservation.🔑Key Points  Sodium benzoate is a type of salt derived from benzoic acid and is used as a preservative in a variety of foods, beverages, condiments, and cosmetics.  The compound is effective at inhibiting the growth of fungi and bacteria, which is why it is so widely used as a food preservative. Its E number (a code for substances used as food additives) is E211. Sodium benzoate is particularly effective in acidic environments (pH below 4.5) where it can effectively inhibit the growth of microbes.
In North India, preferably which bahar should be taken for guava?
✅Explanation: Mrig bahar refers to the flowering period induced in the monsoon season (June-July), with fruits maturing in winter (November-December). This period is ideal for guava cultivation in North India because:The cooler climate during fruit maturation enhances fruit quality and size.It avoids the extreme summer heat that can stress guava plants.📌Other Options Explanations: (a) Ambe bahar: This flowering occurs in spring (February-March), leading to fruiting in the hot summer, which is less suitable for guava in North India due to high temperatures. (c) Hasth bahar: Refers to the flowering in October-November, which is less commonly used in North India for guava cultivation.🛑Additional Information:: The mrig bahar crop is harvested in the month of December to February. Usually this bahar is favoured as the flowering and fruiting period coincides with monsoon season, and the crop is taken without much irrigation. The fruits develop during the rainy season and mature during winter. This bahar is preferred in arid and semi-arid region due to limited water availability and climatic condition.Bahar treatment:Ambe BaharFlowering: February - MarchFruiting: July - AugustHasta BaharFlowering: October - NovemberFruiting: March - AprilMrig BaharFlowering: June - JulyFruiting: December - January
In mango, manures and fertilizers are applied during -
✅Explanation: The most suitable time for applying manures and fertilizers to mango trees is during the post-monsoon period, which falls primarily in October, but can start in late September. This timing is ideal because:Soil Moisture: The soil retains moisture from the monsoon rains, facilitating better absorption of nutrients by the tree's roots.Flower Initiation: Applying nutrients before the flowering season, which usually begins in December, helps promote flower initiation and fruit set.
What type of plant is a Silver Oak?
✅Explanation: Silver Oak (Grevillea robusta) is a large evergreen tree native to eastern coastal Australia.It is known for its fast growth, fern-like leaves, and attractive golden-orange flowers. Silver Oaks can reach heights of up to 40 meters (130 feet). Grevillea robusta, commonly known as the southern silky oak, silk oak or silky oak, or Australian silver oak, is the largest species in the genus Grevillea of the family Proteaceae.📌Other Options Explanations:Climber: A climber is a plant that grows by attaching itself to a support structure, such as a wall or trellis.Shrub: A shrub is a woody plant smaller than a tree, typically with multiple stems and a rounded shape.
Which deity is the Kadam tree associated with?
✅Explanation: The Kadam tree (Neolamarckia cadamba) holds a special significance in Hindu mythology, particularly in association with Lord Krishna. It is believed that Lord Krishna spent his childhood days playing under the Kadam tree in Vrindavan. The tree's fragrant flowers and dense foliage are said to have provided a beautiful setting for his divine pastimes.📌Other Options Explanations:Lord Rama: Lord Rama is often associated with the Ashoka tree.Lord Shiva: Lord Shiva is associated with the Banyan tree.Goddess Laxmi: Goddess Laxmi is associated with the Lotus flower.
Which of the following methods is used to propagate dahlias?
✅Explanation: Dahlias are propagated through their tubers. These tubers are swollen underground stems that store nutrients and allow the plant to survive dormant periods. In the spring, these tubers sprout new shoots that develop into new dahlia plants.📌Other Options Explanations:Corms: Corms are similar to bulbs but have a solid internal structure. They are used to propagate plants like crocus and gladiolus.Bulbs: Bulbs are underground storage organs with layers of fleshy scales. They are used to propagate plants like onions, tulips, and lilies.Rhizomes: Rhizomes are horizontal underground stems that grow near the soil surface. They are used to propagate plants like ginger and iris.🛑Additional Information: Fasciculated roots are the modification of adventitious roots. Fasciculated roots are modified roots of Dahlia. They can be directly sown into the soil with proper sunlight and water to produce new plantlets. The function of fasciculated roots of Dahlia is food storage and vegetative propagation. The fasciculated root of dahlia act as a vegetative propagule for the growing of the new Dahlia plant.
To which region is the Canna plant native?
✅Explanation: Canna, also known as canna lily, is a genus of flowering plants native to tropical and subtropical regions of the Americas. While they are now cultivated worldwide, their natural origins lie in the warm climates of Central and South America, as well as the West Indies.🛑Additional Information::Canna or canna lily is the only genus of flowering plants in the family Cannaceae, consisting of 10 species. All of the genus's species are native to the American tropics and were naturalized in Europe, India and Africa in the 1860s. Although they grow native to the tropics, most cultivars have been developed in temperate climates and are easy to grow in most countries of the world, as long as they receive at least 6–8 hours average sunlight during the summer, and are moved to a warm location for the winter.
What is the full form of FPO in the context of food regulations?
✅Explanation: In the context of food regulations, FPO stands for Fruit Products Order, 1955. It is a legal framework in India that governs the production, packaging, and labeling of fruit and vegetable products. The FPO aims to ensure the quality and safety of these products for consumers. 🔑Key Points  FPO (Fruit products order) stands for hygienic conditions required for Fruits.  According to the Food Safety and Standards Act of 2006, the FPO mark is a certification mark required on all processed fruit products sold in India, such as packaged fruit jams, fruit beverages, pickles, squashes, and fruit extracts. The FPO mark ensures that the product was manufactured in a sanitary 'food-safe' environment, ensuring that it is fit for human consumption. In fact, an FPO license is required to start a fruit processing industry in India. The main aim of the FPO mark is to establish quality standards for the production of fruit products while maintaining sanitary and hygienic conditions.
Which of the following amino acids is considered essential for children, meaning their bodies cannot produce enough of it and it must be obtained through their diet?
Correct Answer: (a) Lysine✅Explanation: Lysine is an essential amino acid for individuals of all ages, including children. It plays a crucial role in various bodily functions, particularly in growth and development. Lysine is necessary for protein synthesis, calcium absorption, building muscle mass, and recovering from injuries. Children have higher requirements for lysine due to their rapid growth and development.📌Other Options Explanations:Glycine: Glycine is a non-essential amino acid, meaning the body can produce it on its own. While it is important for various bodily functions.Gliadin: Gliadin is a type of protein found in wheat and other grains that can trigger celiac disease in susceptible individuals.🔑Key Points Lysine There is 9 essential amino acid that we can only get from food because our body can not make these amino acids, one of them is lysine. Lysine is a building block of protein and it is soluble in water. Its formula is C6H14N2O2. Lysine is an individual amino acid that has linked with growth hormone release in young children's bodies through the somatotrophic axis. In children's bodies, this amino acid plays an important role in normal growth and muscle turnover.🛑Additional Information:: Amino acids contain amino (–NH2) and carboxyl (–COOH) functional groups.  Amino acid is a kind of molecule that form proteins when it is combined. Depending upon the relative position of the amino group with respect to a carboxyl group, the amino acids can be classified as a, β, γ, δ, and so on. The human body needs amino acids to make protein, which breaks down food material.Threonine: It is an essential amino acid. Its formula is C4H9NO3. This amino acid mainly acts as a substrate for protein synthesis, particularly mucin.Histidine: It is an essential α-amino acid. This amino acid works as biosynthesis of protein. Its formula is C6H9N3O2. It is work for growth, repair of damaged tissues, and making blood cells in the human body.Valine: It is a branched-chain essential amino acid. Its formula is C5H11NO2, and it is soluble in water. It helps in enhances energy, muscle tissue recovery, and repair, and increases endurance in the human body.
Which of the following methods is used to increase the nutritive value of food?
✅Explanation: Fortification is the process of adding essential vitamins and minerals (micronutrients) to food to improve its nutritional quality. This is done to address deficiencies in the population's diet and promote public health. For example, milk is often fortified with vitamin D, and salt is fortified with iodine.📌Other Options Explanations:Pressure cooking: Pressure cooking is a method of cooking food quickly using high pressure and steam. While it preserves some nutrients better than boiling, it doesn't increase the nutritive value of food.Canning: Canning is a method of preserving food by sealing it in airtight containers and heating it to kill bacteria. This process can lead to some nutrient loss, particularly of heat-sensitive vitamins like vitamin C.Baking: Baking is a dry-heat cooking method that involves heating food in an oven. While baking can be a healthy way to cook, it doesn't increase the nutritive value of food.🛑Additional Information:: Fortification means deliberately increasing the content of essential micronutrients in a food so as to improve the nutritional quality of food and to provide public health benefits with minimal risk to health.  Voluntary fortification allows food manufacturers to choose what vitamins and minerals they add to food, as long as there are permissions in the Code.  For example, breakfast cereals are allowed to be fortified with a range of vitamins and minerals.  It helps to control increasing health problems like heart disease and diabetes. The amounts that can be added are also regulated.
Ragi is particularly known for being a good source of which of the following nutrients?
✅Explanation: Ragi is exceptionally rich in calcium, making it one of the best plant-based sources of this mineral. It is particularly beneficial for bone health and is an excellent dietary option for children, the elderly, and those at risk of osteoporosis.📌Other Options Explanations:Iron (a): While ragi does contain iron, especially beneficial for combating anemia.🛑Additional Information:Ragio ​'Ragi' also known as Finger Millet, is a popular food grain crop in India.o It is a Kharif crop.o It is called dry land crops, mostly cultivated by the people of Andhra Pradesh, Karnataka, and Tamil Nadu & Kerala.o Grown in both tropical and sub-tropic regions.
One gram of protein provides -
✅Explanation: Calories: A calorie is a unit of energy. In nutrition, we use kilocalories (kcal) to measure the energy content of food. One kilocalorie is equal to 1,000 calories.Macronutrients: The three main macronutrients in our diet are carbohydrates, proteins, and fats. Each of these provides energy to our bodies.Energy per gram: Each macronutrient has a specific amount of energy it provides per gram: Carbohydrates: 4 Calories per gramProtein: 4 Calories per gramFats: 9 Calories per gram
Which preservative is used for preserving tomato products?
✅Explanation: Sodium Benzoate: This is the most commonly used preservative in tomato products like ketchup, sauces, and canned tomatoes. It is effective at inhibiting the growth of bacteria, yeasts, and molds, which are the primary culprits of food spoilage. Sodium benzoate is preferred for tomato products because it does not significantly alter the flavor or color of the product.📌Other Options Explanations:(a) Sugar: While sugar can act as a preservative by creating a high osmotic pressure that inhibits microbial growth. It is more commonly used in jams and jellies.(b) KMS (Potassium Metabisulfite): This preservative is used in some dried fruit products and wine. It can inhibit browning and microbial growth, but it can also have an undesirable effect on the flavor of tomatoes.(c) Vinegar: Vinegar is acidic and can help to preserve some foods. It is more commonly used for pickling.🔑Key Points Sodium benzoateo The sodium salt of Benzoic acid, sodium benzoate is commonly food preservation and pickling agent .o A food preservative that works is sodium Benzoate. It is typically utilised in meals that are acidic, such as salad dressings(for instance, acetic acid in vinegar), carbonated beverages ( carbonic acid), jams and fruit juices ( citric acid), pickles ( acetic acid ), sauces and toppings for yoghurt.o To prevent food from spoiling due to dangerous bacteria, yeasts and moulds, sodium benzoate is employed.o Additionally, it aids in preventing or slowing down changes in food's colour, flavour, PH, and texture.o Salad dressings are another prominent source of sodium benzoate in diet.
In India, date-palm fruits are harvested at which maturity stage?
✅Explanation: In India, date-palm fruits are primarily harvested at the Khalal or Doka stage. This is the initial stage of ripening when the fruits are fully developed but still firm and have a bright yellow or red color. Dates harvested at this stage are crunchy and have a slightly astringent taste. They are often used for fresh consumption or for making pickles and chutneys.📌Other Options Explanations: Chimri or Gandora (a): This is the immature stage when the fruits are small, hard, and green. They are not ready for harvest. Rutab or Dang (c): This is the ripened stage when the fruits become soft and develop sweetness. Dates at this stage are harvested for direct consumption in regions where they ripen on the tree. Tamer or Pind (d): This is the fully ripened and dried stage. The fruits are soft, dark brown, and rich in sugar. They are harvested as dried dates in countries with hot, arid climates.🛑Additional Information:: Date palm (Phoenix dactylifera) belongs to family Arecaceae. Centre of origin is Persian Gulf. Cross pollinated and highly dioecious fruit crop. Highly salt tolerant among fruit crops. Commercially propagated by offshoots. Varieties: Khadraway, Medjool, Barhee, Halawy, Khunezi.
Which of the following fruits has great scope for growing in Rajasthan?
✅Explanation: Date-palm cultivation is well-suited to the arid climate and sandy soils of Rajasthan. The date palm is a drought-tolerant tree that requires minimal water and can thrive in the hot and dry conditions prevalent in the region. Additionally, the date palm is a versatile crop, with various parts of the plant being utilized for food, fodder, and other purposes.📌Other Options Explanations:(a) Coconut: Coconuts require a tropical climate with high humidity and rainfall.(b) Pineapple: Pineapples also prefer a tropical climate with high humidity and well-draining soil.(d) Banana: Banana requires a warm, humid climate with adequate water supply, making it more suited to regions like southern and coastal India.
Which of the following best describes the meaning of "preserve"?
✅Explanation: In the context of food preservation, a "preserve" most often refers to a product that has been processed and stored in a sugar syrup to prevent spoilage. The high sugar content creates an environment inhospitable to bacteria and fungi, thereby extending the shelf life of the food. Common examples include fruit preserves like jams, jellies, and marmalades.
At what Brix level does common salt act as a preservative?
✅Explanation: Common salt (sodium chloride) acts as a preservative by lowering water activity and creating a hypertonic environment that inhibits microbial growth. The effectiveness of salt as a preservative depends on its concentration, typically expressed as a percentage of weight by volume (w/v). A salt concentration of around 10-20% is usually sufficient to inhibit most spoilage bacteria.20° Brix: A 20° Brix solution roughly corresponds to a 20% concentration of soluble solids, which could be achieved by dissolving approximately 20 grams of salt in 100 ml of water. While this concentration might not be sufficient for long-term preservation, it can still provide some antimicrobial effects.Important Note: The specific salt concentration required for preservation varies depending on the type of food and the desired shelf life. For optimal preservation, consulting specific guidelines for different food products is recommended.Related Terminologies:Water Activity (aw): A measure of the availability of water for microbial growth, ranging from 0 (no available water) to 1 (pure water). Lowering water activity inhibits microbial growth.Hypertonic Environment: An environment with a higher solute concentration than inside a cell, causing water to move out of the cell, leading to dehydration and inhibition of growth.
Where is the origin of grape?
✅Explanation: The wild grapevine, Vitis vinifera, is native to the region between the Black Sea and the Caspian Sea, which includes Armenia. This region is considered the center of origin for grape cultivation, and archaeological evidence suggests that grapevines have been cultivated there for thousands of years.
Where is the Central Institute for Subtropical Horticulture situated?
✅Explanation: The Central Institute for Subtropical Horticulture (CISH) is located in Lucknow, Uttar Pradesh, India. It was established in 1972 as the Central Mango Research Station and was later upgraded to a full-fledged institute. CISH is dedicated to research on various aspects of subtropical fruits, including their cultivation, improvement, and protection.🛑Additional Information:: The Central Institute for Subtropical Horticulture (CISH) was started as Central Mango Research Station on September 4, 1972 under the aegis of the Indian Institute of Horticultural Research, Bangalore.  The Institute later renamed as Central Institute for Subtropical Horticulture (CISH) on June 14, 1995, is serving the nation on all aspects of research on subtropical fruits. Headquarter of CISH is situated at Lucknow, Uttar Pradesh.
What is the acid requirement for making good jelly?
✅Explanation: The acid requirement for making good jelly is generally between 0.5% and 1%. This level of acidity is essential for the proper activation of pectin, a natural gelling agent found in fruits. Pectin molecules need an acidic environment to form the network that gives jelly its characteristic texture.🔑Key Points  Pectin is a polysaccharide starch that is used as a thickener in cooking and baking. It is found in the cell wall of vegetables and fruits. For making good jelly, 0.5 to 1.0 percent of pectin is used. Below this percentage range, jelly can’t be set and above this, the jelly gets very hard and tough. 🛑Additional Information::Following are the essential constituents and proportions of a Jelly:1. Sugar - 60 to 65%2. Fruit acid - 1%3. Pectin - 0.5 to 1%4. Water - 33 to 38%
Which of the following is a hybrid variety of mango?
✅Explanation: Amrapali is a hybrid variety of mango developed in India by crossing Dashehari and Neelum varieties. It is known for its regular and abundant fruiting, dwarf growth habit, and delicious taste.📌Other Options Explanations:(a) Dashehari: A popular mango variety from North India, known for its sweet and fibrous pulp.(b) Chausa: Another popular mango variety, originating from Bihar, known for its sweet, juicy, and almost fiberless pulp.(c) Langra: A mango variety from Uttar Pradesh, famous for its unique flavor and aroma.🛑Additional Information::Hybrid VarietiesMalika (Neelum X Dashehari)• Realizing Institute : Indian Agricultural Research Institute (IARI), New Delhi. Amrapali (Dashehari X Neelum)• Realizing Institute : Indian Agricultural Research Institute (IARI), New Delhi. Ratna (Neelum X Alphonso)• Realizing Institute : Konkan Krishi Vidyapith, Maharashtra. Sindhu (Ratna back-crossed with Alphonso)• Realizing Institute : Konkan Krishi Vidyapith, Maharashtra. Arka Aruna (Banganapalli X Alphonso)• Realizing Institute : Indian Institute of Horticulture Research (IIHR), Bangalore. Arka Neelkiran (Alphoso x Neelum)• Realising Institute : Indian Institute of Horticulture Research (IIHR), Bangalore.
Fruit cracking in pomegranate is primarily due to:
✅Explanation: Fruit cracking in pomegranates is primarily caused by uneven soil moisture, which leads to inconsistent water uptake by the plant. When pomegranate trees experience periods of drought followed by sudden heavy rainfall or over-irrigation, the fruit's skin can crack due to the rapid expansion of the fruit's internal tissues while the outer skin does not stretch fast enough.🛑Additional Information:: Pomegranate (Punica granatum) belongs to family Punicaceae. Cross pollinated crop and highly draught tolerant. It performs well in soil pH 7.5. Rooted cuttings or layers of 12 - 18 months age can be planted during June to December in pits of 60 x 60 x 60 cm at 5 x 5 m or 4 x 4 m spacing either way.
Which of the following fruit trees is most suitable for dryland conditions in Rajasthan?
✅Explanation: Ber (Indian Jujube or Ziziphus mauritiana) is a highly drought-tolerant fruit tree that is well-suited for the arid and semi-arid regions of Rajasthan. It has deep roots that can access water from lower soil layers, and it can also tolerate high temperatures and low humidity. Additionally, ber fruits are nutritious and have a long shelf life, making them a valuable crop for farmers in Rajasthan.
Where is the National Research Centre for Cashewnut located?
✅Explanation: The National Research Centre for Cashewnut (NRCC) is located in Puttur, a town in the Dakshina Kannada district of Karnataka, India. Established in 1983, it is a leading institution dedicated to research and development in all aspects of cashew cultivation, processing, and utilization. The NRCC aims to improve the productivity and quality of cashew nuts through research, technology transfer, and training.
Where is the Central Plantation Crops Research Institute located?
✅Explanation: The Central Plantation Crops Research Institute (CPCRI) is located in Kasaragod, Kerala, India. It is a premier research institute dedicated to the study and improvement of plantation crops like coconut, arecanut, cocoa, and oil palm. The institute operates under the Indian Council of Agricultural Research (ICAR).
Where is the National Research Centre for Seed Spices located?
✅Explanation: The National Research Centre for Seed Spices (NRCSS) is located in Tabiji, a village near Ajmer, Rajasthan, India. It was established in 2000 by the Indian Council of Agricultural Research (ICAR) to conduct research on seed spices and improve their productivity and quality. The center focuses on various aspects of seed spice cultivation, including breeding, agronomy, plant protection, and post-harvest technology.🛑Additional Information: The Indian Council of Agricultural Research established the National Research Centre on Seed Spices at Ajmer during the IX Five–Year–Plan to initiate research work on seed spices especially aimed to improve the productivity and quality with reference to domestic demand and export and value. The centre came into existence on 22 of April 2000. A number of technologies including varieties, precision nutrient and water management through drip fertigation, protected cultivation, plant protection and post-harvest handling & processing etc. have been developed at NRCSS for improving the production and quality of seed spices. NRCSS has more than 30 collaborations with various institutions around the country and working dedicatedly for the betterment of seed spices production in India and its stakeholders.
To which family does coconut belong?
✅Explanation: Coconut, scientifically known as Cocos nucifera, belongs to the Arecaceae family. This family is also commonly known as the palm family and includes a diverse range of trees, shrubs, and vines characterized by their unbranched stems and large, evergreen leaves.📌Other Options Explanations:(b) Umbelliferae (Apiaceae): This family includes plants like carrots, parsley, and dill, which are characterized by their umbrella-like flower clusters.(c) Myrtaceae: This family includes plants like eucalyptus, clove, and guava, known for their aromatic leaves and fruits.(d) Rutaceae: This family includes citrus fruits like oranges, lemons, and limes, known for their characteristic aroma and acidic fruits.🛑Additional Information::Coconut (Cocos nucifera L.) is a monocotyledonous palm belonging to the family Arecaceae. It has only a single species 'nucifera' in the genus Cocos, with the chromosome number of 2n=32. The palms have a robust, cylindrical, erect stem with a single growing point from where the successive leaf production takes place producing a terminal crown. Palms can grow up to 20-30 meters in ta II varieties and 10-15 meters in dwarf varieties. Leaves are pinnate and are called 'fronds', which are generally 4 to 6 m in length and 1.5 to 2 m in width.
The jel meter test is used to judge:
✅Explanation: The jel meter test is a simple method used to estimate the pectin content in fruit juice. It involves measuring the flow rate of juice through a graduated tube. The slower the juice flows, the higher the pectin content. This information is crucial for determining the amount of sugar to be added while making jelly.🛑Additional Information::Differences Between Jam and JellyFruit Maturity:Jam: Made from ripe and thick flaccid fruits.Jelly: Made from firm and 3/4th mature fruits.Pectin Importance:Jam: Pectin is less important than acid.Jelly: Pectin is essential (0.5-1%) and is tested using alcohol and a Jelmeter.Appearance:Jam: Opaque.Jelly: Transparent.Sugar Addition:Jam: Sugar is added based on acid content (68.5% sugar).Jelly: Sugar is added based on pectin content (65-70% sugar).Fruit Mixing:Jam: Can be prepared by mixing fruits.Jelly: Fruits are not mixed.End Point Temperature:Jam: 219-221°F.Jelly: 221-222°F.Total Soluble Solids (TSS):Jam: 68.5%.Jelly: >65%.Acid Content:Jam: 0.5-0.6%.Jelly: 1%.
Which of the following is a polyembryonic variety of mango?
✅Explanation: Polyembryonic Mangoes: These mango varieties have seeds that contain multiple embryos, leading to the development of more than one seedling from a single seed. One of these embryos is zygotic (result of fertilization), while the others are nucellar (develop from maternal tissue). The nucellar seedlings are genetically identical to the parent tree.Olour: This is a polyembryonic mango variety known for its excellent taste and disease resistance. It's a good choice for growing from seed because it produces true-to-type offspring.📌Other Options Explanations:(a) Neelum: A popular Indian mango variety known for its sweetness and aroma.(b) Mallika: A hybrid mango variety developed in India, known for its large size and sweet taste.(d) Dashehari: A popular Indian mango variety known for its fiberless pulp.🛑Additional Information::Polyembryony is the occurrence of more than one embryo in a seed which consequently results in the emergence of multiple seedlings.In India ,10 polyembryonic mango varieties are found which are namely:Olour, Goa,Chandrakaran, Bellary,Mulgoa, Salem,Solan, Bappakoi, Kurkan,Nileswar dwarf.​Polyembryonic mangoes tend to be relatively resistant to anthracnose.polyembryonic cultivars are good rootstock because of the moderate canopy, tolerant to drought, salt, environmental stress
Rock gardens are an essential feature of which type of garden?
✅Explanation: Rock gardens, also known as Zen gardens or dry landscapes, are a signature feature of traditional Japanese gardens. These gardens are designed to evoke a sense of tranquility and contemplation, using carefully arranged rocks, gravel, and sand to represent natural landscapes like mountains, islands, and flowing water.📌Other Options Explanations:(b) English garden: English gardens typically feature lush greenery, manicured lawns, and colorful flower beds. (c) Mughal garden: Mughal gardens are known for their geometric layouts, symmetry, and water features like fountains and canals. Rocks are sometimes used as decorative elements.(d) Kitchen garden: Kitchen gardens are practical spaces designed to grow edible plants like fruits, vegetables, and herbs. Rocks may be used for edging or decoration.
Which of the following is NOT grown as a flowering tree?
✅Explanation: Bassia latifolia (also known as Madhuca longifolia or Mahua) is primarily grown for its edible flowers and seeds, which are used to produce oil and alcohol. While it does produce flowers, it is not cultivated primarily for its ornamental value.📌Other Options Explanations:(b) Bauhinia purpurea(Orchid Tree or Purple Bauhinia): This tree is known for its beautiful orchid-like flowers and is commonly grown as an ornamental tree.(c) Jacaranda mimosifolia(Jacaranda): This tree is famous for its stunning display of vibrant purple flowers and is widely planted as an ornamental tree in streets and parks.(d) Thespesia populnea(Portia Tree): This tree produces attractive yellow flowers with a maroon center and is grown both for its ornamental value and its medicinal properties.
Which of the following flowers is used for the preparation of attars (a type of perfume oil)?
✅Explanation: Rose: Roses are one of the most popular flowers used in the production of attars. The fragrant petals of various rose species, particularly Rosa damascena (Damask rose), are steam distilled to extract the essential oil, which is the base of many rose attars.Attar: Attar, also known as ittar, is a natural perfume oil derived from botanical sources. The traditional method of attar production involves hydro-distillation, where steam passes through the plant material (flowers, herbs, spices, etc.), carrying the fragrant compounds. The steam is then condensed, and the essential oil separates from the water.📌Other Options Explanations:Jasminum sambac (Arabian jasmine): Arabian jasmine is a popular flower used in perfumery, including attars.
Which of the following is known for rose breeding?
✅Explanation: Dr. B.P. Pal: A renowned Indian geneticist and plant breeder, Dr. Pal is considered the father of rose breeding in India. He developed several new rose varieties, including 'Dr. B. P. Pal Rose,' 'Delhi Princess,' and 'Raja Ram Mohan Roy.' His work significantly impacted rose cultivation in India.📌Other Options Explanations:Dr. M.S. Swaminathan: A prominent agricultural scientist known for his contributions to the Green Revolution in India. He primarily focused on improving cereal crops like wheat and rice.Dr. K.L. Chadha: A horticulturist who specialized in fruit breeding, particularly citrus fruits and mangoes.Dr. J.S. Arora: An agricultural scientist who worked on improving oilseed crops like rapeseed and mustard.
Morphine is used as:
✅Explanation: Morphine: A potent opioid analgesic (pain reliever) derived from the opium poppy. It works by binding to opioid receptors in the brain and spinal cord, reducing the perception of pain and producing a senseof euphoria. Morphine is commonly used to treat moderate to severe pain, such as post-surgical pain, cancer pain, and pain associated with trauma.📌Other Options Explanations:Antimalarial Drug: Drugs used to prevent or treat malaria, a parasitic disease transmitted by mosquitoes. Examples include chloroquine and artemisinin.Control of Rheumatic Disease: Medications used to manage rheumatic diseases, which are autoimmune or inflammatory conditions affecting joints, muscles, and other tissues. Examples include nonsteroidal anti-inflammatory drugs (NSAIDs) and disease-modifying antirheumatic drugs (DMARDs).Insecticide: Chemicals used to kill insects. Examples include organophosphates, pyrethroids, and neonicotinoids.🔑Key Points Morphine-o Morphine belongs to a class of drugs known as Narcotics.o It is a pain medication that is found naturally in a number of plants and animals, including humans.o It acts directly on the central nervous system (CNS) and decreases the feeling of pain.o The primary source of morphine is the poppy straw of the opium poppy.
Which of the following is a crop of the coastal region?
✅Explanation: Coconut: Coconut palms thrive in coastal regions due to their tolerance to saline soils and their preference for high humidity. Coconuts are a versatile crop, with various uses for their meat, water, oil, and husk fibers.📌Other Options Explanations:Guava: Guava trees prefer well-drained soils and moderate climates.Lime: Lime trees thrive in tropical and subtropical climates with well-drained soilsns.Papaya: Papaya plants prefer well-drained soils and warm climates.
Phule Arakta is a popular variety of -
✅Explanation: Phule Arakta: A high-yielding pomegranate variety developed in India. It is known for its large, sweet fruits with soft seeds and bold red arils (the juicy seed sacs). The skin is glossy and attractive, making it a popular choice for both domestic and export markets.📌Other Options Explanations:Ber: Also known as Indian jujube, is a fruit-bearing tree with small, round or oval fruits.Bael: Also known as wood apple, is a large, hard-shelled fruit with aromatic pulp.Phalsa: Also known as Sherbet Berry, is a small, dark purple fruit with a tangy flavor.
Fenni, a popular alcoholic drink, is made from-
✅Explanation: Fenni:A traditional alcoholic spirit native to Goa, India. It is made by fermenting and distilling the juice of cashew apples. There are two main types of feni: cashew feni and coconut feni (made from fermented coconut sap). Cashew feni is the more common and popular type.📌Other Options Explanations:Date Palm: While date palms are used to make various products like date sugar and syrup.Grape: Grapes are widely used for making wine and other alcoholic beverages.Oil Palm: Oil palms are primarily cultivated for their oil, which is used in cooking and various other products.
Guava is vegetatively propagated through -
✅Explanation: Air Layering: This is the most common and commercially preferred method for propagating guava. It involves inducing root formation on a stem while it's still attached to the parent plant. A portion of the stem is girdled (a ring of bark is removed), treated with rooting hormone, and wrapped in moist sphagnum moss. After several weeks, roots develop, and the new plant can be separated and planted.🛑Additional Information::(a) Seed:Guava can grow from seeds. Seed propagation leads to genetic variation and is primarily used for breeding purposes, not for commercial cultivation. (b) Cutting:Guava can be propagated using hardwood or semi-hardwood cuttings, though the success rate may vary. Rooting hormones are often used to improve the chances of success.(c) Grafting:Commonly used methods like cleft grafting or veneer grafting are employed in guava propagation. This technique ensures that the new plant retains the desirable traits of the parent plant.
The most common disease of Ber is -
✅Explanation: Powdery Mildew: This is the most prevalent and economically significant disease affecting Ber trees. It is caused by the fungus Oidium erysiphoides var. zizyphi. The disease manifests as a white powdery coating on leaves, stems, flowers, and fruits. Severe infections can lead to defoliation,🛑Additional Information::The common diseases of Ber (Ziziphus mauritiana) include:Powdery Mildew:Cause: Fungal infection by Oidium erysiphoides.Symptoms: White powdery spots on leaves, stems, and fruits, which can spread and lead to defoliation and reduced fruit quality.Management: Spraying with sulfur-based fungicides or systemic fungicides like hexaconazole or carbendazim.Leaf Spot:Cause: Fungi like Cercospora spp.Symptoms: Brown or black circular spots on leaves, causing leaf drop in severe cases.Management: Regular pruning of infected parts and use of fungicides like mancozeb or chlorothalonil.Fruit Rot:Cause: Fungi such as Rhizopus spp. or Aspergillus spp.Symptoms: Rotted, discolored, or mushy fruits, often under high humidity conditions.Management: Proper sanitation, avoiding fruit injuries, and pre-harvest sprays of fungicides.Dieback:Cause: Fungi like Lasiodiplodia theobromae.Symptoms: Drying of twigs from the tip backward, ultimately killing the branch.Management: Pruning of affected branches and application of systemic fungicides.Rust (less common):Cause: Fungi like Ravenelia zizyphivulgaris.Symptoms: Orange or rust-colored pustules on leaves, reducing photosynthetic activity.Management: Use of copper-based fungicides or sulfur sprays.
In which fruit crop, is fruit borer a major problem?
✅Explanation: Pomegranate Fruit Borer: This is a major pest of pomegranate, causing significant economic losses. The larvae of the fruit borer, Deudorix isocrates, bore into the developing fruits, feeding on the seeds and pulp. This leads to premature fruit drop, rotting, and reduced yield.🛑Additional Information::1. Bacterial BlightCause: Xanthomonas axonopodis pv. punicae.Symptoms:Water-soaked spots on leaves, fruits, and stems.Spots enlarge, become dark brown, and cause fruit cracking.Leads to premature leaf drop and reduced fruit quality.Management:Use disease-free planting material.Sprays with copper-based bactericides (e.g., copper oxychloride) mixed with antibiotics like streptocycline.Proper orchard sanitation and removal of infected parts.2. Fruit Rot (Alternaria Rot)Cause: Alternaria alternata or Aspergillus niger.Symptoms:Black or brown spots on fruit that later develop into rotting areas.Affected fruits emit a foul odor.Management:Avoid fruit injuries during harvest and handling.Use pre- and post-harvest fungicides like carbendazim or thiophanate-methyl. 3. Leaf SpotCause: Cercospora punicae.Symptoms:Circular or irregular brown spots on leaves with yellow halos.Severe infections cause leaf drop.Management:Application of fungicides like mancozeb or chlorothalonil.Regular removal of infected leaves.4. Powdery MildewCause: Oidium sp.Symptoms:White powdery patches on leaves, stems, and young fruits.Leads to reduced photosynthesis and fruit deformities.Management:Sprays with sulfur-based fungicides or systemic fungicides like difenoconazole.5. Wilt DiseaseCause: Soil-borne fungi like Fusarium oxysporum.Symptoms:Yellowing and wilting of leaves, progressing to plant death.Browning of vascular tissues in roots and stems.Management:Soil solarization before planting.Drenching soil with fungicides like carbendazim or bio-control agents like Trichoderma.6. AnthracnoseCause: Colletotrichum gloeosporioides.Symptoms:Dark sunken spots on fruits, which expand and coalesce.Affects fruit quality and marketability.Management:Pruning of infected parts and use of fungicides like propiconazole.
For increasing fruit quality in grapes, which hormone is commonly used?
✅Explanation: Gibberellin (GA3):This is the most commonly used hormone for improving fruit quality in grapes. It is particularly effective in increasing berry size, especially in seedless varieties. Gibberellin promotes cell elongation and division, leading to larger berries. Additionally, it can enhance fruit set, reduce berry drop, and improve cluster looseness (making the grapes less compact).📌Other Options Explanations:Ethrel (Ethephon): This hormone is used in grape cultivation to promote ripening and improve fruit coloration.NAA (Naphthalene Acetic Acid): NAA is used to prevent fruit drop and improve fruit set in grapes.Mallic Hydrazide: This growth inhibitor is used to control sucker growth in grapes.🛑Additional Information::Gibberellins are a group of plant hormones that play a crucial role in various developmental processes, including seed germination, stem elongation, leaf expansion, and flower and fruit development.They are known for their ability to promote cell division and elongation, which contributes to the overall growth of the plant.Gibberellins are also involved in breaking seed dormancy, which allows seeds to germinate under favorable conditions.They stimulate cell division and elongation: Gibberellins are well-known for their role in promoting cell division and elongation. This is a fundamental aspect of plant growth and development. By stimulating these processes, gibberellins contribute to the overall increase in plant size and biomass.Spraying gibberellins stimulates bud formation and fruit set in apples and pears: Gibberellins can enhance bud formation and fruit set in certain fruit crops like apples and pears. This is particularly useful in horticulture to improve fruit yield and quality.This helps in breaking seed dormancy: Gibberellins play a crucial role in breaking seed dormancy, allowing seeds to germinate. This is particularly important for seeds that require specific conditions to initiate germination.Application of GA promotes fast fruit ripening: This statement is incorrect. Gibberellins do not promote fast fruit ripening. They are more associated with promoting growth and development rather than ripening. Fruit ripening is typically regulated by other hormones such as ethylene.
Papain in papaya is extracted from:
✅Explanation: Papain: An enzyme found in the latex (milky sap) of unripe papaya fruit. This enzyme is a protease, meaning it breaks down proteins. It is used for various purposes, including meat tenderizing, digestive aids, and in certain medical treatments.🔑Key Points Papine: Papain is a plant proteolytic enzyme for the cysteine proteinase family cysteine protease enzyme in which enormous progress has been made to understand its functions. Papain is found naturally in papaya (Carica papaya L.) manufactured from the latex of raw papaya fruits. The enzyme is able to break down organic molecules made of amino acids, known as polypeptides, and thus plays a crucial role in diverse biological processes in physiological and pathological states, drug designs, industrial uses such as meat tenderizers, and pharmaceutical preparations.  Proteolytic enzymes help break proteins down into smaller protein fragments called peptides and amino acids. This is why papain is a popular ingredient in meat tenderizers. Papain may help relieve sore throat symptoms, such as swelling, pain, and redness.  It is also used for insect bites, wound healing, diarrhea, and many other conditions, but there is no good scientific evidence to support these uses. In manufacturing, papain is used in cosmetics, toothpaste, contact lens cleaners, meat tenderizers, and meat products.
Lalit is the variety of -
✅Explanation: Lalit: A popular guava variety in India known for its medium-sized, round fruits with white flesh and a sweet flavor. It is a high-yielding variety and is preferred for its good fruit quality and resistance to some diseases.📌Other Options Explanations:Aonla: (Indian Gooseberry) Aonla varieties include 'Banarasi', 'Chakaiya', and 'NA-7'.Bael: (Wood Apple) Bael varieties include 'Muralidhar', 'Kaghzi Nikolov', and 'Azamati'.Orange: Orange varieties include 'Nagpur Mandarin', 'Kinnow', and 'Valencia'.
Suitable propagation media for air layering is -
✅Explanation: Sphagnum Moss: This is the most widely used and preferred medium for air layering due to its unique properties. It is highly absorbent, holding a large amount of water while still allowing air circulation. Sphagnum moss is naturally acidic, which helps prevent fungal and bacterial growth. It is also lightweight and easy to wrap around the stem.📌Other Options Explanations:Vermiculite: While vermiculite holds moisture well, it can become too compact, restricting air flow to the developing roots.Cocopeat: Cocopeat can be used as a component in an air layering mix, but it is usually combined with other materials like perlite or sphagnum moss to improve drainage and aeration.🔑Key Points Species of moss are used as fuel to provide peat that has long been used as fuel.Mosses are nonvascular plants also known as Bryophytes.Sphagnum is commonly known as peat moss.Peat has multiple uses as it provides nutrients to them and also it is used to derive energy which could be used in vehicles.Peat is used for domestic heating purposes as an alternative to firewood and forms a fuel suitable for boiler firing in either briquetted or pulverized form.Peat is also used for household cooking in some places and has been used to produce small amounts of electricity.Some organizations classify peat as fossil fuel and not as a renewable fuel.The development of peat is favoured by warm moist climatic conditions; however, peat can develop even in cold regions such as Siberia, Canada, and Scandinavia. 🛑Additional Information:Mosses are small, non-vascular flowerless plants in the taxonomic division Bryophyta.Bryophyta may also refer to the parent group of bryophytes, which comprise liverworts, mosses, and hornworts.Mosses typically form dense green clumps or mats, often in damp or shady locations.The individual plants are usually composed of simple leaves that are generally only one cell thick, attached to a stem that may be branched or unbranched and has only a limited role in conducting water and nutrients.Although some species have conducting tissues, these are generally poorly developed and structurally different from similar tissue found in vascular plants.Mosses do not have seeds and after fertilisation develop sporophytes with unbranched stalks topped with single capsules containing spores.They are typically 0.2–10 cm (0.1–3.9 in) tall, though some species are much larger.Dawsonia, the tallest moss in the world, can grow to 50 cm (20 in) in height. There are approximately 12,000 species.
In North India, grapes are pruned in -
✅Explanation: In North India, grapevines are pruned during the late winter or early spring, typically in January-February. This is because North India experiences a single growing season, and pruning during this time allows the vines to develop new shoots and prepare for fruiting in the upcoming season.🛑Additional Information:: Removal of any vegetative part in a vine is called pruning. It is normally done once in North India during January - February. It is done by heading back half off the mature shoots for fruiting and the balance half are pruned for renewal spurs, which develop into fruiting canes in the next year. Best example is for-pruning which is normally done to encourage reproductive growth.
Bahar treatment is essential in:
✅Explanation: Bahar Treatment: A horticultural practice used to manipulate the flowering and fruiting cycles of certain fruit crops. It involves inducing dormancy during off-seasons and promoting flowering during desired periods. This is achieved by various techniques like withholding irrigation, root pruning, or chemical treatments.Pomegranate: Bahar treatment is particularly important for pomegranate cultivation, especially in regions with distinct seasons. Pomegranate trees tend to flower multiple times a year, resulting in irregular fruiting with smaller and less marketable fruits. Bahar treatment helps to synchronize flowering, leading to a single or concentrated harvest of larger, higher quality fruits.🛑Additional Information:: The mrig bahar crop is harvested in the month of December to February. Usually this bahar is favoured as the flowering and fruiting period coincides with monsoon season, and the crop is taken without much irrigation. The fruits develop during the rainy season and mature during winter. This bahar is preferred in arid and semi-arid region due to limited water availability and climatic condition.
In respect of fruit climate, which one is odd?
✅Explanation: Grape: Grapes are primarily cultivated in temperate climates, which have distinct seasons including cold winters and warm summers. This seasonal variation is crucial for the grapevine's dormancy and subsequent growth and fruit development.Banana, Guava, and Citrus: These fruits thrive in tropical and subtropical climates, which are characterized by warm temperatures and relatively consistent weather throughout the year. They are not adapted to withstand cold winters and require a frost-free environment.
The suitable rootstock for sapota is -
✅Explanation: Rayan/Khirni (Manilkara hexandra): This is the most preferred and widely used rootstock for sapota propagation. It is compatible with sapota scions, promotes good growth and vigor, and results in high-quality fruits. Rayan/Khirni rootstocks are known for their drought tolerance,
How many times does guava flower in North India?
✅Explanation: In North India, guava (Psidium guajava) typically flowers twice a year, with two major flowering seasons:First flowering (Ambe Bahar):This occurs during the summer months, around March to April. It is the main flowering season. Second flowering (Mrig Bahar):The second flowering occurs in the monsoon season, around July to August, leading to a second crop of guava fruits.These two flowering seasons ensure that guava can be harvested twice a year, which is beneficial for maximizing production.
Which of the following fruit crops is dioecious?
✅Explanation: Dioecious: A term used to describe plant species in which male and female flowers are borne on separate individual plants.📌Other Options Explanations:Sapota: Sapota trees are typically hermaphroditic, meaning they have both male and female flowers on the same tree. However, some varieties can exhibit functionally dioecious behavior, with individual trees primarily functioning as either male or female.Ber: Ber trees are usually polygamous, meaning they have both bisexual (containing both male and female parts) and unisexual flowers on the same tree.Pomegranate: Pomegranate trees are hermaphroditic, having both male and female parts within the same flower.🛑Additional Information:: Date palm (Phoenix dactylifera) belongs to family Arecaceae. Centre of origin is Persian Gulf. Cross pollinated and highly dioecious fruit crop. Highly salt tolerant among fruit crops. Commercially propagated by offshoots. Varieties: Khadraway, Medjool, Barhee, Halawy, Khunezi.
The variety of Papaya developed from mutation is -
✅Explanation: Pusa Nanha: This dwarf papaya variety was developed through mutation breeding by exposing the seeds of the 'Pusa Delicious' variety to gamma radiation.📌Other Options Explanations:Pusa Dwarf: While also a dwarf variety, Pusa Dwarf was developed through traditional breeding methods.Surya: Surya is a hybrid papaya variety, resulting from cross-breeding different papaya lines.Pant Papaya: Pant Papaya is another variety developed through traditional breeding methods.
Polyembryonic variety of Mango is -
✅Explanation: Polyembryonic Mango:A mango variety that produces multiple embryos within a single seed. This means that when the seed germinates, it can produce multiple seedlings, some of which are genetically identical to the parent tree (nucellar embryos) and some of which are the result of sexual reproduction (zygotic embryos).Bappakai: This is a polyembryonic mango variety found in the southern part of India, particularly in Kerala. It is not a commercially important variety but is valued for its unique characteristic of polyembryony.📌Other Options Explanations:Neelum: This is a popular commercial mango variety known for its excellent taste and aroma. Dasheri: Another popular mango variety, known for its sweet and fibrous flesh.Langra: A well-known mango variety with a unique flavor and aroma.
Sapota is commercially propagated by –
✅Explanation: Inarching: This is a form of grafting where two plants growing on their own roots are grafted together.🛑Additional Information::Inarching is a method of asexual propagation used to grow sapota trees, and it involves grafting a scion from a mature tree onto a healthy rootstock: 1. 1. Prepare the rootstockRaise the rootstock in a pot. One-year-old seedlings of rayan are suitable for grafting. 2. 2. Prepare the scionThe scion remains attached to the parent tree until the union is complete. 3. 3. GraftCarefully cut the bark of both the scion and rootstock so that their cambium layers meet. Securely tie them together to allow the tissues to fuse. 4. 4. Separate the scionGradually detach the scion from its original tree to force it to draw nutrients from the rootstock.
Citrus canker is caused by –
✅Explanation: Bacteria: Citrus canker is caused by the bacterium Xanthomonas citri subsp. citri. This bacterium infects the leaves, twigs, and fruits of citrus plants, causing lesions and scabs. These lesions can lead to defoliation, fruit drop, and ultimately reduced yield.🔑Key Points  Citrus canker is a plant disease that affects the citrus species. Cause - Bacterium Xanthomonas. Symptoms -o Brown spotting or lesions on leaves.o The lesions develop a water-soaked margin with a yellow ring around it.o Blemishes or blisters on the fruit rind.o Leaf and fruit drop in premature stage. Fruits affected by citrus canker are safe to consume but becomes less appealing.🛑Additional Information: Some other bacterial diseases of plants are:o Crown gall - Agrobacterium tumefacienso Common blight of beans - Xanthomonas campestriso Soft rot - Erwinia carotovora Some fungal plant diseases are:o Late blight of potato - Phytophthora infestanso Black rust of wheat - Puccinia graminiso Loose smut of wheat - Ustilago nuda Some viral plant diseases:o Tobacco mosaic disease - Tobacco mosaic virus (TMV)
Flowering appears in aonla –
✅Explanation: Aonla (Indian gooseberry) typically flowers during the late winter and early spring months, which corresponds to February and March in most regions of India. The flowering period can last for about 30 days.
Grape production is highest in -
✅Explanation: Maharashtra is the leading grape-producing state in India. The state has the ideal climate and soil conditions for grape cultivation. Nashik, known as the "Grape Capital of India," is a major grape-producing region within Maharashtra, followed by Sangli, Ahmednagar, and Satara.🔑Key Points  Nashik district, Maharashtra is known as the Grape Capital of India as it contributes more than half of the total grape export in the country. Grape (Vitis vinifera) is grown from temperate to warm regions; however, a hot and dry climate is ideal. Indian grapes come in varied characteristics namely colored, white, seeded, unseeded, large, and small berries. Maharashtra ranks first in terms of production accounting for more than 81.22 % of total production and the highest productivity in the country. Nashik district is the 3rd largest district in Maharashtra in terms of Population of 61,09,052 and area occupying an area of 15,582 square kilometers in the north Maharashtra region. The Godavari River rises from Trimbakeshwar in the Nashik district of Maharashtra
National Research Centre for Litchi is located at -
✅Explanation: The National Research Centre for Litchi (NRCL) is located in Mushahari, Muzaffarpur, Bihar, India. It was established in 2012 by the Indian Council of Agricultural Research (ICAR) with the aim of conducting research on litchi to improve its production, quality, and post-harvest management. Bihar is the largest litchi-producing state in India, making Muzaffarpur an ideal location for the NRCL.📌Other Options Explanations: Pune: Pune is home to the National Research Centre for Grapes.🛑Additional Information::The ICAR-NRCL is premier national institute for conducting research and developments on litchi and provides leadership at national level. It also acts as a national repository of information on litchi production, processing, value addition, and provides consultancy services to end users.
Which fruit is also referred to as "Bathroom fruit"?
✅Explanation: The British colonizers in India often referred to mangoes as "bathroom fruit" due to the messy way Indians traditionally ate them. The juicy pulp of the mango would run down their hands and arms, often requiring a post-eating cleanup in the bathroom.🛑Additional Information::1. A Mango is also known as King of fruits/ National fruit/ Bathroom fruit.2. Botanical name: Magnifier indicia, Family: Anacardiaceous3. Origin place: – South Asia / Indo-Burma region.4. Major Producing States: Andhra Pradesh, Uttar Pradesh, Bihar, Karnataka,Tamil Nadu, West Bengal, Orissa and Maharashtra.5. Botany: Fruit type – Berry6. Edible part – Meso-carp7. Mango fruit has the highest Vitamin A.8. Mango is the highest largest producing and exporting fruit of India.9. Propagation method:Commercially propagation – Veneer grafting and Epicotyl grafting In situ propagation – Side grafting10. Advanced Technology – High density planting (Amrapalli variety)11. Planting distance of mango is 10 m ’10 m.12. Cogging technique of breeding is used 1®’ time in mango by Dr. R.N. Singh.13. Longevity of mango seeds is 30 days (4 weeks).Mango Varieties and their Important Characteristics:1. Alphanso – Most popular variety of India, highly export qualitab le, susceptible to spongy tissue.2. Amrapali – High intensity variety (2.5 m’ 2.5 m). Dwarf, regular bearers, cluster bearing, small sized fruits, good keeping quality.3. Ark Puente – Regular bearer, attractive skin colour and medium sized, free from spongy tissue, good keeping quality, good sugar acid blend.4. Bombay green – Earliest variety of North India, Pollinizing variety, highest Vit. C, it is also called Malda in UP and Sehroli in Delhi.5. Banganapalli – Main commercial var. of A.P.6. Chousa – Sweetest variety.7. Dashehari – Most popular variety of N. India.8. Fazli – Late maturing variety.9. Kesar – Good processing variety.10. Langra-Most prone to fruit drop.11. Lai sindhu – Powdery mildew resistant variety.12. Mallika – Regular bearers, high TSS, good colour, uniform fruits,moderate keeping quality.13. Niranjan – Off season bearer.14. Neelum – Best combiner variety, ideal for long transportation, gives two crops in a year.15. Ratna – Regular bearer, free from spongy tissue and fibre.16. Rosica-Mutant variety.17. Rumani – Apple shaped variety.18. Sindhu – Seedless variety.19. North Indian varieties are generally alternate bearer and mono embryonic, whereas South Indian varieties are generally Regular bearer and poly embryonic.20. Regular bearer varieties are Ratna, Neelum, Himsagar, Gulab khas, Pairy, Totapari.21. In India, 10 poly-embryonic varieties are found which are namely Olour, Goa, Salem, Bellary, Chandrakaran, Bappakoi, Kurkan, Nileshzvar dwarf, Solan and Mulgoa.22. Self-incompatible mango varieties are Dashehari, Langara, Chousa, Bombay green.23. Hybrid varieties:a. Mullica – Neel am x Dashehari (NDM)b. Amrapalli – Dashehari x Neelam (DNA)c. Ratna – Neelam x Alphanso (NAR)d. Sindhu – Ratna x Alphanso (RAS)e. Arka puniest – Alpha so x Baganapalli (ABaAp)f. Ark arena – Baganapalli x Alpha so (BaAAa)g. Ark Neelkiran – Alphas x Neelam (ANAn)h. Manjeera – Rumani x Neelam (RNM)24. New varieties released from IARI:(a) Pusa surya(b) Pusa Arumina (Amrapalli’ Sensation)(c) Akshay-selected from Dashehari25. Only 0.1% flowers (perfect) develop into fruits to mature.26. Number of perfect flower is found highest in Langra, whereas lowest in Rumani Variety.27. Paclobutrazol (5-10 ppm) chemical is most commonly used for flower induction.28. Housefly works as a pollinator for mango.29. C: N ratio is 10:1.
Amphimixis is a method of reproduction that is:
✅Explanation: Amphimixis is a type of sexual reproduction involving the fusion of male and female gametes (sperm and egg) to form a zygote. This zygote develops into a new organism with a unique genetic combination inherited from both parents. Amphimixis also involves meiosis division.📌Other Options Explanations:(a) Asexual: Asexual reproduction involves a single parent and produces offspring that are genetically identical to the parent.(b) Vegetative: Vegetative reproduction is a type of asexual reproduction in plants where new individuals arise from vegetative parts like stems, roots, or leaves.🛑Additional Information::Amphimixis  ​Amphimixis is also known as karyogamy. Once the sperm enters the secondary oocyte, the second meiotic division gets completed in the secondary oocyte. The secondary oocyte is now known as the matured ovum. The sperm tail and second polar body degenerates. The male and female pronuclei move closer to each other. The nuclear membrane of the pronuclei are broken down and their contents including chromosomes mix up into one mass.  This mass is surrounded by a common nuclear membrane. Thus the fusion of pronuclei of sperm and ovum is known as amphimixis.
For which crop does the term "heat units" have particular relevance?
✅Explanation: The term "heat units" (also known as Growing Degree Days, GDD) refers to the cumulative amount of heat required for a crop to grow, develop, and mature. This concept is particularly relevant for date palms, as their growth and fruit maturation depend heavily on specific temperature thresholds over time. High temperatures are essential for optimal flowering, fruit setting, and ripening in date palms.Why Heat Units Matter for Date Palms:Date palms are native to hot, arid regions and thrive in high temperatures. They require a specific number of heat units above a base temperature (usually 10°C) to complete their growth cycle, flower, and produce fruit. Insufficient heat units can lead to delayed or incomplete ripening, while excessive heat can cause the fruit to ripen too quickly and negatively impact quality.
Mridula is a variety of which fruit?
✅Explanation: Mridula is a popular variety of pomegranate known for its sweet, soft seeds, and attractive red color. It is a seedling selection from an open-pollinated F2 population of a cross between Ganesh and Gul-e-Shah Red pomegranate varieties.Key Characteristics of Mridula Pomegranate:Taste: Sweet and juicy with a balanced flavor profileArils (Seeds): Soft and edibleColor: Deep red, both inside and outSize: Medium to large🛑Additional Information::This variety has all the characters of the Ganesh variety except the arils are dark red in colour. The colour of the arils in 'Ambe' bahar and 'Mrig' bahar is dark red in colour while it is pink during the 'Hasta' bahar. The average fruit weight is 250-300 grams.
Phalsa is native to which region?
✅Explanation: Phalsa (Grewia asiatica) is a fruit-bearing shrub native to the Indian subcontinent. It is believed to have originated in the Varanasi region of India and was later spread to other parts of South Asia and Southeast Asia by Buddhist scholars.Phalsa and its Origins:Phalsa is deeply rooted in Indian culture and cuisine. Its berries have a unique sweet and sour taste, and they are often used to make refreshing drinks, jams, and desserts. The plant thrives in the hot and arid regions of India, making it a valuable source of nutrition and hydration in those areas.🛑Additional Information::Phalsa belonging to family Tiliaceae is one of the most important fruit crops in rainfed areas. It can be easily grown both in tropical and subtropical climate up to an elevation of 900 m above mean sea-level. Its plants can tolerate high temperature, are drought resistant and have less water requirement. Therefore, it is most suited to the hot and dry plains having distinct summer and winter
Bitter pit in apples is caused by a deficiency of which nutrient?
✅Explanation: Bitter pit is a physiological disorder in apples caused primarily by calcium deficiency within the fruit. Calcium is essential for cell wall development and membrane integrity. When calcium levels are low, the cell walls weaken, leading to cell collapse and the formation of characteristic sunken, bitter-tasting lesions on the fruit.📌Other Options Explanations:(a) Boron: Boron deficiency can cause other fruit disorders like corking and internal browning.(b) Zinc: Zinc deficiency can result in small, distorted leaves and stunted growth.(d) Molybdenum: Molybdenum deficiency is rare in apples and typically affects nitrogen metabolism.🛑Additional Information::Factors Contributing to Calcium Deficiency:Low soil calcium: Insufficient calcium levels in the soil can limit uptake by the tree.Drought stress: Dry conditions can hinder calcium transport within the tree.Excessive nitrogen or potassium: High levels of these nutrients can interfere with calcium uptake and utilization.Rapid fruit growth: Fast-growing apples may not have enough time to accumulate sufficient calcium.Prevention and Management:Calcium Sprays: Foliar application of calcium chloride or calcium nitrate can help address deficiencies.Soil Management: Maintaining optimal soil pH and ensuring adequate calcium availability in the soil.Irrigation: Proper watering practices help in calcium uptake by roots.Crop Load Management: Avoiding excessive fruit load ensures sufficient calcium distribution among fruits.
Which type of cutting is commercially used to propagate grapevines?
✅Explanation: Hardwood stem cuttings are the most common and successful method for propagating grapevines commercially. These cuttings are taken from dormant, mature canes during the winter when the plant is not actively growing. Hardwood cuttings are typically 8-12 inches long and have several nodes (where buds and leaves emerge).📌Other Options Explanations:(b) Semi-hardwood stem: Semi-hardwood cuttings are taken from partially mature wood during the summer. They are less commonly used for commercial grapevine propagation due to lower success rates and increased risk of disease.(c) Softwood stem: Softwood cuttings are taken from new, tender growth in the spring. They are highly susceptible to desiccation and disease.🛑Additional Information::Why Hardwood Stem Cuttings Are Preferred:High success rate: Hardwood cuttings have a higher chance of rooting compared to other types of cuttings.Disease resistance: Mature wood is less susceptible to diseases than young, tender growth.Ease of storage and transport: Hardwood cuttings can be stored over winter and transported easily.Consistency: Hardwood cuttings produce uniform plants with predictable growth characteristics.Key Advantages of Hardwood Cuttings:Ease of Handling: Dormant cuttings are easy to store and transport.High Success Rate: They root reliably under proper conditions.Cost-Effective: Suitable for large-scale commercial propagation.
After planting, when does a banana plant typically initiate flowering?
✅Explanation: Banana plants typically initiate flowering 9-12 months after planting, depending on the variety, climatic conditions, and cultivation practices. This period is considered the vegetative growth phase, during which the plant develops sufficient leaf and pseudostem mass to support flowering and subsequent fruit production.Factors Influencing Flowering:Variety: Some banana varieties may flower slightly earlier or later.Climate: Warm and humid tropical conditions promote faster growth and earlier flowering.Soil and Nutrition: Proper fertilization and soil health encourage timely flowering.Irrigation: Adequate water supply supports vigorous growth and ensures flowering on time.
Which mango cultivar is most suitable for high-density planting (HDP)?
✅Explanation: Amrapali is the most suitable mango cultivar for high-density planting (HDP) due to its dwarf growth habit and regular bearing nature. It can be planted at closer spacings (5m x 5m or even closer), allowing for a higher number of trees per hectare, leading to increased productivity.Reasons why Amrapali is ideal for HDP:Dwarf Growth Habit: Amrapali trees are naturally smaller and more compact than other varieties, making them easier to manage in a high-density system.Regular Bearing: Amrapali produces a consistent yield each year, ensuring a steady income for farmers.Early Maturity: Amrapali trees start bearing fruit earlier than many other varieties, which is beneficial in HDP systems where early returns are desired.High Yield: Even with closer spacing, Amrapali trees are capable of producing a high yield per hectare due to their efficient fruit-bearing capacity.🔑Key Points  The 'Amrapali' mango is a named mango cultivar introduced in 1971. It was developed as a hybrid variety of 'Dasheri' and 'Neelum' by Dr. Pijush Kanti Majumdar at the Indian Agriculture Research Institute in Delhi.  The tree is a dwarf, regular-bearer, with clusters of small-sized fruits. Amrapali variety can be used in a High-Density Planting system.
Which of the following is a non-climacteric fruit?
✅Explanation: Non-climacteric fruits are fruits that do not ripen further after harvesting. They do not produce a significant amount of ethylene gas, which is the hormone responsible for ripening in climacteric fruits. Litchis are non-climacteric fruits, meaning they should be harvested when fully ripe as they will not ripen further after being picked.📌Other Options Explanations:(a) Papaya: Papaya is a climacteric fruit that continues to ripen after harvesting due to ethylene production.(b) Sapota: Sapota (also known as chikoo) is also a climacteric fruit that ripens further after harvest.(d) Mango: Mango is a climacteric fruit and will continue to ripen after being picked.🛑Additional Information::Climacteric FruitsAppleApricotAvocadoBananaBerCherimoyaFigGuavaKiwifruitMangoMelonsPearPeachPlumPersimmonPapayaTomatoSapotaPassion fruitNon-Climacteric FruitsCarambolaCherriesCitrusGrapeLitchiLoquatOlivePineapplePomegranateStrawberry
Which of the following is a flavoring compound present in mangoes?
✅Explanation: Amyl acetate is one of the key flavoring compounds present in mangoes, contributing to their distinctive sweet and fruity aroma. This compound is an ester, which is commonly associated with the characteristic flavors and fragrances of many fruits, including mangoes.Why Amyl Acetate is Important in Mangoes:Flavor: Amyl acetate is a key flavor compound in mangoes, imparting a sweet, fruity taste.Aroma: It also contributes to the aroma of mangoes, adding a sweet, fruity note.Variety Differentiation: The concentration of amyl acetate can vary between mango varieties, contributing to the unique flavor profiles of different cultivars.📌Other Options Explanations:(a) Flavamones: Flavamones are a type of flavonoid found in citrus fruits and other plants. (c) Pentanol: Pentanol is an alcohol that can contribute to flavors. (d) Hexanol: Hexanol is an alcohol with a grassy and herbal odor.
Cold sterilization is also known as:
✅Explanation: Cold sterilization, also known as irradiation, is a method of sterilization that uses ionizing radiation (gamma rays, X-rays, or electron beams) to kill or inactivate microorganisms like bacteria, viruses, and fungi. This process is called "cold" because it does not involve high temperatures like traditional sterilization methods. It is often used to sterilize medical equipment, pharmaceuticals, and food products that are sensitive to heat.Why Irradiation is Called Cold Sterilization:No Heat: Unlike autoclaving or dry heat sterilization, irradiation does not use high temperatures, thus preserving the quality and integrity of heat-sensitive materials.Penetration: Ionizing radiation can penetrate through packaging and materials, ensuring thorough sterilization.Effective: Irradiation is a highly effective method for killing a wide range of microorganisms.📌Other Options Explanations:(a) Cold storage: Cold storage involves storing perishable items at low temperatures to slow down spoilage.(b) Pasteurization: Pasteurization is a heat-treatment process that kills some microorganisms in food and beverages. (d) Freezing: Freezing can inhibit the growth of microorganisms. 🔑Key Points  Food processing by radiation (cold pasteurization) is a physical, nonthermal mode of food preservation. Irradiation causes minimal modification in the flavor, color, nutrients, taste, and other quality attributes of food. Food irradiation uses ionizing radiation to reduce bacteria, molds, and other pests in food. Irradiation breaks chemical bonds to stop bacteria and other pathogens from multiplying.🛑Additional Information:Irradiation treatment for food preservation involves the exposure of food products to ionizing or nonionizing radiation.The sources of ionizing radiation could be gamma rays, X-rays, or high-energy electrons; and for nonionizing radiation, electromagnetic radiation like ultraviolet rays, visible light, microwaves, and infrared are used.
Individual quick freezing (IQF) is commonly practiced in:
✅Explanation: Individual quick freezing (IQF) is a freezing method where individual pieces of food are frozen rapidly. This method is particularly suitable for small, uniform items like peas, ensuring that each pea freezes quickly and individually, preventing them from clumping together. IQF helps preserve the quality, texture, and flavor of the peas, making them ideal for various culinary applications.Why IQF is Ideal for Peas:Small size: The small size of peas allows for quick and even freezing.Uniformity: Peas have a relatively uniform shape, making them suitable for the IQF process.Minimal damage: IQF minimizes damage to the peas' cellular structure, preserving their quality and texture.Convenience: IQF peas are easy to store, portion, and use in various recipes. 🛑Additional Information::Benefits of IQF for Peas:Prevents Clumping: Ensures that peas can be easily separated, even after freezing.Retains Quality: Preserves the texture, color, and nutritional content.Convenient Storage: Easier for consumers to use specific portions without defrosting the entire batch.Related Terminologies:IQF: Individual Quick Freezing - a freezing method where individual pieces of food are frozen rapidly.Blast freezing: A rapid freezing method that uses cold air circulation to freeze food quickly.Fluidized bed freezing: An IQF method where food particles are suspended in a stream of cold air, allowing for even freezing.Cryogenic freezing: A rapid freezing method that uses extremely low temperatures, such as liquid nitrogen or carbon dioxide.
What causes a white, cottony surface growth on pickles?
✅Explanation: Rhizopus is a type of fungus that commonly causes a white, cottony surface growth on pickles. This growth is a sign of spoilage, and the pickles should not be consumed. Rhizopus thrives in warm, moist environments and can quickly contaminate food.Why Rhizopus Grows on Pickles:Environment: Pickles provide an ideal environment for Rhizopus to grow, as they are often stored in warm, humid conditions.Nutrient-rich: Pickles are a good source of nutrients for Rhizopus, which helps the fungus to thrive.Spores: Rhizopus spores are present in the air and can easily contaminate pickles if they are not properly sealed. 📌Other Options Explanations:(b) Lactobacillus: Lactobacillus is a beneficial bacteria used in the fermentation process of making pickles. It helps to preserve the pickles and gives them their characteristic sour flavor.(c) Aspergillus: Aspergillus is another type of fungus that can cause spoilage in food.(d) Trichoderma: Trichoderma is a beneficial fungus used in agriculture and horticulture for its ability to control plant diseases. 🔑Key Points  Rhizopus does not have motile sperm. Gametangial copulation occurs in Rhizopus. The terminal part of sub-aerial hyphae serves as coenogametes. Coenogametes fuse to form a diploid zygote. The diploid zygote develops into a resting spore called a zygospore. The zygospore contains several diploid nuclei along with reserve material. Meiosis occurs within the zygospore, resulting in the formation of spores. Upon germination, these spores give rise to new mycelium.
What is the minimum requirement for juice content and Total Soluble Solids (TSS) in Ready-to-Serve (RTS) beverages?
✅Explanation: Ready-to-Serve (RTS) beverages, as per the Food Safety and Standards Authority of India (FSSAI) regulations, must contain a minimum of 10% fruit juice and 10% total soluble solids (TSS). This ensures that the beverage has a sufficient amount of fruit content and sweetness.Why 10% Juice and 10% TSS:Juice Content: The 10% minimum juice content ensures that the beverage has a noticeable fruit flavor and provides some nutritional benefits from the fruit.Total Soluble Solids (TSS): TSS refers to the sugars and other dissolved solids in the beverage. The 10% minimum TSS requirement ensures that the beverage has an adequate level of sweetness.
Cryo-preservation is a method associated with:
✅Explanation: Cryopreservation is a process where biological materials, such as cells, tissues, or organs, are preserved by cooling them to very low temperatures, typically using liquid nitrogen. Liquid nitrogen has a boiling point of -196°C (-321°F), which is low enough to essentially stop all biological activity, including the processes that lead to cell death and degradation.Why Liquid Nitrogen is Used in Cryopreservation:Extremely Low Temperature: Liquid nitrogen provides the extremely low temperatures needed to effectively preserve biological materials for extended periods.Inert: Liquid nitrogen is inert and does not react chemically with the preserved materials, ensuring their integrity.Safe: While handling liquid nitrogen requires caution, it is a safe and reliable cryoprotectant when used properly.📌Other Options Explanations:(b) Freezing: While freezing is part of cryo-preservation, it specifically refers to ultra-low temperature freezing using liquid nitrogen.(c) Chemical: Chemicals, known as cryoprotectants, are used in conjunction with freezing to prevent ice crystal formation and damage to cell.(d) Drying: Drying, or desiccation, is a preservation method that removes water from biological materials.🔑Key Points  Cryopreservation is the method of keeping living cells, tissues, eggs, sperm, and other biological samples in a deep freeze at subzero temperatures for storage or preservation. Cryopreservation is also a process of Ex situ conservation. The sample is commonly kept at liquid N2 gas and its temperature maintains at −196º C. It is an effective way to transport biological samples over long distances, and store samples for prolonged periods of time. The threatened species can be preserved in viable and fertile conditions for long periods using cryopreservation techniques, eggs can be fertilized In vitro, and plants can be propagated using tissue culture. The steps involved in preserving the biological samples are,o Harvesting or Selection of materialo Addition of cryo-protectanto Freezingo Stored in liquid nitrogen gaso Thawing In cryopreservation, cryo-protectants are used to reduce the freezing point of the medium, dehydrate the preservable substances, and slow the cooling rate, which reduces the risk of crystallization. Examples of cryo-protectants are glycerol, DMS, FBS, trehalose, glycols, etc. Glycerol and DMS (Dimethyl sulfoxide) are used to dehydrate the biological materials during cryopreservation. Glycerol and DMS prevent dehydration and intracellular ice crystals formation, which can result in cell death and destruction of cell organelles during the freezing process.  DMS is broadly used for the protection of most cells and tissues and glycerol is commonly used for the cryoprotection of RBCs.
What is the primary cause of weeping jelly?
✅Explanation: Weeping jelly, also known as syneresis, is a phenomenon where the jelly separates from the fruit and liquid accumulates on top or around the edges. This is primarily caused by excessive acidity in the fruit or the recipe.Why Excess Acid Causes Weeping:Pectin Breakdown: Pectin is the natural gelling agent in fruits, and its ability to form a stable gel is dependent on a specific pH range. Excess acid can break down pectin, weakening the gel structure and leading to the release of liquid.Brittle Gel: A gel with too much acid becomes brittle and unable to hold the liquid, resulting in syneresis.🛑Additional Information:: Pectin is the major constituent of all plants.o It makes up approximately two-thirds of the dry mass of plant primary cell walls.o Pectin also provides structural integrity, strength, and flexibility to the cell wall. It acts as a barrier to the external environment.o When Pectin is heated together with sugar, the product starts to thicken.o It is widely used in the preparation of jams, jellies, and marmalades.o All fruits contain some pectin, but some must be combined with fruits high in pectin or with commercial pectin products to obtain gels.o It coagulates the fruit juice.o One has to be careful while adding pectin to sugar, the product would be very hard of it is put too much.o The product would be runny if less pectin as added.
Aloe vera is propagated through:
✅Explanation: Aloe vera is most commonly and effectively propagated through suckers, also known as pups or offsets. These are miniature plants that grow at the base of the parent plant and develop their own roots. They can be easily separated and replanted to grow into new individuals.Why Suckers are Preferred for Aloe Vera Propagation:Genetic Identicality: Suckers are genetically identical to the parent plant, ensuring consistent characteristics and quality in the new plants.Quick and Easy: Separating and replanting suckers is a simple and relatively fast method of propagation compared to growing from seeds.High Success Rate: Suckers already have their own roots, making them more likely to survive and thrive after transplanting.📌Other Options Explanations:(a) Runners: Runners are horizontal stems that grow above the ground and produce new plants at their nodes. (c) Seeds: While aloe vera can be grown from seeds, it is a slower process and the resulting plants may not be genetically identical to the parent.Important Points Aloe is a cactus-like plant that grows in hot, dry climates. It is cultivated in subtropical regions around the world. In India, it is found in Rajasthan, Andhra Pradesh, Gujarat, Maharashtra, and Tamil Nadu. Aloe vera is used in food, cosmetics, food supplements, herbal remedies. Several clinical types of research have suggested the following benefits of Aloe vera: It may help in improving acne, Healing burn injuries, It is used for the treatment of constipation, Antioxidant and antimicrobial properties, protection from UV radiation.
The economic product of Stevia is obtained from which part of the plant?
✅Explanation: Stevia is a natural sweetener and sugar substitute derived from the leaves of the Stevia rebaudiana plant. The leaves contain sweet-tasting compounds called steviol glycosides, which are about 200-300 times sweeter than table sugar but have negligible calories. These glycosides are extracted and purified to create stevia sweeteners.Why Leaves are the Economic Product:Steviol Glycosides: The leaves are the primary source of the sweet-tasting steviol glycosides, the main component of stevia sweeteners.Concentration: The highest concentration of steviol glycosides is found in the leaves, making them the most valuable part of the plant for commercial production.Harvesting: Leaves are relatively easy to harvest and process compared to other plant parts like flowers, fruits, or seeds.🛑Additional Information:: Uses - Calorie free sweetner, sugar substitute for diabetic patients.  Stevia is a sugar substitute made from the leaves of the stevia plant. It's about 100 to 300 times sweeter than table sugar, but it has no carbohydrates, calories, or artificial ingredients. Examples of Artificial Sweeteners:Saccharin (Ortho-sulphobenzimide):The first popular artificial sweetening agent.Discovered in 1879.About 550 times as sweet as cane sugar.Aspartame:Roughly 100 times as sweet as cane sugar.It is a methyl ester of dipeptide formed from aspartic acid and phenylalanine.Limited use in cold foods and soft drinks.Alitame:A high potency sweetener.Difficult to control the sweetness of food when using it.About 2000 times as sweet as cane sugar.Sucralose:It is a trichloro derivative of sucrose.Its appearance and taste are like sugar.Does not provide calories.About 600 times as sweet as cane sugar.
Ginger is propagated through:
✅Explanation: Ginger is a plant that is propagated through its rhizomes. Rhizomes are underground stems that grow horizontally and have nodes from which new shoots and roots can emerge. To propagate ginger, a piece of rhizome with at least one "eye" or bud is planted in the soil, and it will grow into a new plant.Why Rhizomes are Preferred for Ginger Propagation:Vegetative Reproduction: Rhizomes allow for vegetative reproduction, meaning the new plant is genetically identical to the parent plant. This ensures consistency in the ginger's quality and characteristics.Efficient and Easy: Propagating ginger through rhizomes is a simple and efficient method, as it doesn't require specialized skills or equipment.Quick Growth: Ginger plants grown from rhizomes establish themselves quickly and can produce a harvest in a relatively short time. 📌Other Options Explanations:(a) Budding: Budding is a grafting technique where a bud from one plant is inserted into another. (c) Seed: Ginger rarely produces viable seeds, and even when it does, growing ginger from seed is a slow and unreliable process.(d) Suckers: Suckers are shoots that arise from the base of a plant. While some plants can be propagated through suckers.🛑Additional Information:: Rhizome is a type of Vegetative propagation of asexual reproduction. Vegetative propagation is a mode of reproduction in which new plants are formed from vegetative parts (vegetative propagules) of the plant like root, stem, etc. Since the formation of these vegetative propagules does not involve two parents, the process involved is asexual. It is very common in higher angiosperms. A rhizome is a form of plant stem that consists of nodes from which roots and shoots emerge.  Rhizomes can be found on the surface of the soil or underneath. Rhizomes are distinguished by their steep growth, which allows new shoots to emerge from the ground.  When a rhizome is separated, each component is capable of growing a new plant. Example- As in Ginger, Rhizome are capable of giving rise to new offspring.🛑Additional Information::Following are some units of vegetative propagation:Rhizome - GingerBulb - Onion, GarlicTuber - potatoBulbil - AgaveLeaf buds - BryophyllumOffset - Hyacinth and pistiaRunner - OxalisSucker - Mint
Lawsonia is mostly propagated through:
✅Explanation: Lawsonia (also known as Henna) is most commonly and successfully propagated through stem cuttings. This involves taking a piece of the stem and planting it in a suitable medium, where it will develop roots and grow into a new plant.Why Cuttings are Preferred for Lawsonia Propagation:Ease and Efficiency: Stem cuttings are a relatively simple and efficient method of propagation. They can be easily taken from existing plants and rooted with minimal resources.Genetic Similarity: Cuttings produce plants that are genetically identical to the parent plant, ensuring consistent traits and quality.Faster Growth: Compared to seed propagation, cuttings can establish themselves more quickly and reach maturity sooner.📌Other Options Explanations:(a) Budding: Budding is a grafting technique where a bud from one plant is inserted into the stem of another. (b) Seed: While Lawsonia can be propagated through seeds, it is a slower and less reliable method. Seed germination can be unpredictable, and the resulting plants may not be genetically identical to the parent.(d) Runners: Runners are horizontal stems that grow along the ground and produce new plants at their nodes.
At what concentration level does sugar act as a preservative?
✅Explanation: Sugar acts as a preservative at concentrations of 66% and above due to a process called osmosis. At this high concentration, sugar molecules draw water out of the cells of microorganisms, effectively dehydrating and killing them. This prevents the growth of bacteria, yeasts, and molds, thus preserving the food. Examples: Fruit syrup, jam, jelly, marmalade, candy, crystallised fruits and glazed fruits. Why 66% and Above is Important:Osmotic Pressure: At 66% concentration, sugar creates a high osmotic pressure. This pressure forces water to move out of the microbial cells, making it impossible for them to survive.Reduced Water Activity: Water activity (aw) is the amount of free water available for microbial growth. High sugar concentrations reduce water activity to a level that inhibits microbial growth.Stabilizing Effect: Sugar also helps to stabilize the texture and flavor of preserved foods.
When is the best time to add salt while making tomato sauce?
✅Explanation: While there are different opinions on when to add salt to tomato sauce, adding it at the beginning of the cooking process is a common practice for several reasons:Flavor Enhancement: Salt helps draw out moisture from the tomatoes, concentrating their natural sugars and acids, which intensifies the overall flavor of the sauce.Texture Improvement: Salt can help break down the cell walls of the tomatoes, leading to a smoother, less chunky sauce.Even Distribution: Adding salt early allows it to dissolve and distribute evenly throughout the sauce as it cooks.
Grapes are generally dried in:
✅Explanation: Grapes are traditionally and most commonly dried in the sun to produce raisins. Sun-drying is a natural and cost-effective method that has been used for centuries. The grapes are spread out on trays or racks and exposed to sunlight, which evaporates the moisture and concentrates the sugars, resulting in the characteristic sweet and chewy texture of raisins.Why Sun Drying is Preferred:Traditional Method: Sun drying is the most traditional and widely used method for producing raisins, especially in regions with abundant sunshine.Cost-effective: It does not require any specialized equipment or energy input, making it a cost-effective option for farmers.Unique Flavor: Sun-dried raisins are known for their distinct flavor profile, which is developed through the natural drying process under the sun.📌Other Options Explanations:(b) Dehydrator: Dehydrators are used for drying grapes, especially in regions with less sunlight or for faster drying. However, they require energy input and may not produce the same flavor profile as sun-dried raisins.(c) Vacuum Drier: Vacuum driers are used for drying delicate products.(d) Spray Drier: Spray drying is a method used for drying liquids into powders.🛑Additional Information:: When raisins are placed in water, the water from the surrounding diffuses into the raisins and so the raisins swell up.o ​This process is called osmosis. When dried raisins are placed in a concentrated salt solution, they will shrink.  A raisin, when put in a salt solution (or any other concentrated solution), loses water by exosmosis and consequently shrinks. This happens due to osmosis. It is the passage of water from a region of high water concentration to a region of lower water concentration
Which of the following is a fruit candy?
✅Explanation: Aam ka Murabba is a traditional Indian sweet preserve made from mangoes. It is considered a fruit candy due to its sweet, candied nature and the fact that it is primarily made from mangoes, a fruit. Murabba is made by cooking pieces of fruit in sugar syrup until they are tender and translucent. The syrup is often flavored with spices like cardamom, saffron, and cloves.Why Aam ka Murabba is a Fruit Candy:Main Ingredient: The primary ingredient in Aam ka Murabba is mango.Sweetness: It is heavily sweetened with sugar, giving it a candy-like quality.Texture: The fruit pieces become soft and chewy, similar to candied fruits.📌Other Options Explanations:(a) Agra-ka-Petha: Petha is a translucent soft candy made from ash gourd (a vegetable).(b) Aonla ka Murabba:Aonla (Indian gooseberry) murabba is a sweet preserve made from aonla, which is considered a fruit. (d) Sugar candy: Sugar candy, also known as mishri, is made from crystallized sugar.
Who developed the zero-energy cool chamber?
✅Explanation: The zero energy cool chamber (ZECC) was developed by S.K. Roy and D.S. Khurdiya at the Indian Agricultural Research Institute (IARI), New Delhi, in the early 1980s. It is a low-cost, sustainable storage solution for fruits, vegetables, and flowers, especially in rural areas with limited access to electricity.How ZECC Works:The ZECC utilizes the principle of evaporative cooling. A double-walled brick structure filled with sand and water acts as a cooling medium. As the water evaporates from the sand, it absorbs heat from the inner chamber, lowering the temperature and maintaining high humidity, ideal conditions for storing fresh produce.Why ZECC is Important:Low-cost: ZECC is a cost-effective alternative to conventional refrigeration, making it accessible to farmers and small businesses in developing countries.Sustainable: It operates without electricity, relying on natural processes like evaporation, making it an environmentally friendly solution.Reduces Post-harvest Losses: ZECC helps extend the shelf life of fresh produce, reducing post-harvest losses and improving food security.📌Other Options Explanations:(d) Louis Pasteur: Louis Pasteur was a renowned French scientist who made significant contributions to microbiology and chemistry.
Which of the following vegetables is a good source of iodine?
✅Explanation: While none of the listed vegetables are exceptionally high in iodine, okra stands out as a relatively good source compared to the others. A 100-gram serving of okra contains approximately 31 mcg of iodine, contributing to a small but meaningful portion of the daily recommended intake.Why Okra is a Good Source (Comparatively):Soil Content: Okra plants tend to absorb iodine from the soil more readily.Bioavailability: The iodine in okra is relatively bioavailable, meaning that the body can easily absorb and utilize it.🔑Key Points  Deficiency of Iodine causes Goitre. Deficiency of iodine can result in a range of disabilities and disorders such as goitre, hypothyroidism, cretinism, abortion, stillbirths, mental retardation, and psychomotor defects.o Defects in which there is a slow down in thought process and a reduction of physical movements in an individual. Iodine deficiency is the most common cause of thyroid enlargement and goitre. Within a goitre, nodules can develop. Patients with a large goitre may experience symptoms of choking, especially when lying down, and difficulty swallowing and breathing.🛑Additional Information: Iodine:o Iodine is a vital micro-nutrient for the optimal mental and physical development of human beings.o In 1992, India made fortification of salt with iodine mandatory, for direct human consumption.o In 2011, the Supreme Court also mandated universal iodization for the control of iodine deficiencies.o A recent initiative in this regard named Jeevan Bindi (an iodine patch designed like a regular bindi) was started to help one lakh tribal women in north-west Maharashtra battle iodine deficiency as these tribals did not consume iodized salt.
In which city is the Buddha Jayanti Garden located?
✅Explanation: The Buddha Jayanti Park, also known as the Buddha Jayanti Smarak Park, is located in Delhi, India. It was built to commemorate the 2500th anniversary of Gautama Buddha's enlightenment and was inaugurated in 1964. The park features a large statue of Buddha, a Bodhi tree, and beautiful landscaping.
What plant has the botanical name Cyamopsis tetragonoloba?
✅Explanation: Cyamopsis tetragonoloba is the scientific name for the cluster bean, also known as guar. It is a legume crop primarily grown for its seeds, which are used to produce guar gum, a thickening agent used in various industries. The plant is a legume, meaning it belongs to the Fabaceae family, which includes peas and beans.📌Other Options Explanations:(a) Pea: The botanical name for pea is Pisum sativum.(b) Radish: The botanical name for radish is Raphanus sativus.(c) Cow-pea: The botanical name for cow-pea is Vigna unguiculata.🔑Key Points Cluster bean is an important legume cultivated mostly on marginal and sub marginal lands of arid and semi-arid regions.Cluster bean is a deep-rooted plant of Leguminosae (Fabaceae) family known for drought and high temperature tolerance. The major cluster bean cultivating countries are India, Pakistan, USA, Italy, Morocco, Germany, and Spain.Cluster bean is a self-pollinated crop with a chromosome number of 2n=14. It is an annual crop with well-developed long tap root system. It is about 50-100 cm tall bearing 4-10 branches
Little leaf of brinjal is caused by:
✅Explanation: Little leaf of brinjal is a plant disease caused by a phytoplasma, a type of bacteria-like organism that lacks a cell wall. It is transmitted by leafhoppers, specifically the species Hishimonus phycitis. The disease causes stunted growth, reduced leaf size, and yellowing of leaves in brinjal (eggplant) plants. Phytoplasmas are specialized pathogens that infect plant phloem tissues and are known to cause various plant diseases. 🛑Additional Information: Little leaf of brinjal - o Little leaf of brinjal is caused by a plant pathogenic mollicule, Phytoplasma (earlier known as mycoplasma-like organism or MLO).o Phytoplasmas are phloem-limited pleomorphic bacteria lacking the cell wall.Disease: Little leaf of brinjalA serious viral disease of brinjal.Transmitted by leaf hoppers (Cestius (Hishimonus) phycitis and Amrasca biguttula biguttula).Symptoms:Infected plants show light yellow leaves in the early stages.Leaves reduce in size and become malformed.Plants appear shorter in stature, with a bushy appearance due to a large number of branches, roots, and leaves.Petiole shortening.Many buds appear in the axil of leaves.Shortened internodes.Deformed flower parts, leading to plant sterility.Infected plants do not bear fruit or the fruits that form are hard, tough, and fail to mature.Control Measures:Sanitary measures: Eradicate susceptible volunteer crops from previous plantings to reduce damage.Use trap crops as barriers.Early removal and destruction of infected plants.Adjust sowing time to avoid main flights of leaf hoppers.Spray Malathion (2 ml/litre of water) starting with the appearance of leaf hoppers to control their population.
The word "Olericulture" is derived from which language?
✅Explanation: The word "Olericulture" is derived from Latin. It is formed by combining two Latin words:Oleri-: The inflectional stem of the Latin noun "olus" (also "holus"), meaning "vegetable" or "kitchen herb."-culture: Derived from the Latin word "cultura," meaning "cultivation" or "growing."Therefore, "Olericulture" literally translates to the cultivation of vegetables.🔑Key Points Olericulture: Olericulture is a branch of horticulture that deals with the production, storage, processing, and marketing of vegetables. It is the production of plants for the use of their edible parts. Vegetable crops are classified into nine categories. It also includes organic gardening and organic farming and biotechnology.🛑Additional Information:Other Important types of cultures involved with the growth of different plants or organisms: Pisciculture: Production of Fish. Apiculture: Production of honey from bees, also called beekeeping. Sericulture: Production and cultivation of silkworms to produce silk. Horticulture is the science and art of the development, sustainable production, marketing, and use of high-value, intensively cultivated food and ornamental plants including crops, vegetables, and flowers. Floriculture or flower farming is a branch of horticulture that deals with the cultivation of flowering and ornamental plants for gardens and for floristry, comprising the floral industry.
Bolting is associated with which of the following vegetables?
✅Explanation: Bolting is a process in which a plant prematurely produces a flowering stem (or stems) before the edible parts of the plant are ready for harvest. This is common in biennial plants like cauliflower and cabbage, which are grown for their leaves or heads. Bolting is often triggered by environmental factors like changes in temperature and day length.Why Cauliflower and Cabbage are Prone to Bolting:Biennial Nature: Cauliflower and cabbage are biennial plants, meaning they typically grow vegetatively in the first year and flower in the second year. However, certain environmental cues can trigger early flowering (bolting) in the first year.Temperature: High temperatures or fluctuations in temperature can induce bolting in cauliflower and cabbage.Day Length: Longer day length can also trigger bolting, especially during the spring and summer months.
Roses are most commonly propagated by:
✅Explanation: T or shield budding is the most common and commercially preferred method for propagating roses. It involves inserting a bud from a desired rose variety (the scion) into a T-shaped cut made in the stem of a rootstock. The rootstock provides the roots and basic structure for the new plant, while the scion bud develops into the desired rose variety.Why T or Shield Budding is Preferred for Roses:Efficient: It is a relatively simple and efficient method for producing a large number of plants.Preserves Traits: T-budding ensures that the resulting plant will have the same desirable characteristics as the parent plant.Disease Resistance: Using a healthy and vigorous rootstock can provide resistance to soil-borne diseases.Adaptability: Budding can be used to propagate a wide range of rose varieties.📌Other Options Explanations:(a) Grafting: Grafting is another common method for propagating roses.(b) Inarching: Inarching is a type of grafting used to join two plants while they are still growing on their own roots. (c) Layering: Layering involves bending a stem to the ground and encouraging it to root. 🛑Additional Information: Rose: Botanical Name: Rosa spp Family: Rosaceae Origin: India (Northern Hemisphere) Chromosome Number: 2n = 14
Which of the following is a rooting hormone?
✅Explanation: IBA (Indole-3-butyric acid) is a naturally occurring plant hormone that is widely used as a rooting hormone. It promotes the formation of adventitious roots on stem cuttings, leaf cuttings, and other plant tissues. IBA is available in various forms, including powders, liquids, and gels, and is used by gardeners, horticulturists, and nursery professionals for plant propagation.Why IBA is a Rooting Hormone:Stimulates Root Development: IBA triggers the formation of new roots by activating specific genes involved in root initiation and growth.Versatile: It can be used on a wide variety of plants, including both herbaceous and woody species.Effective: IBA has been shown to increase the rooting success rate and improve the quality of roots in many plant species.📌Other Options Explanations:(a) 2,4-D (2,4-Dichlorophenoxyacetic acid): This is a synthetic auxin, a type of plant hormone. While it can promote root formation at low concentrations.(c) NAA (Naphthalene acetic acid): NAA is another synthetic auxin used as a rooting hormone. (d) GA (Gibberellic acid): GA is a plant hormone involved in various growth processes, including stem elongation, seed germination, and fruit development.
Which ornamental tree is commonly known as the 'Devil's Tree'?
✅Explanation: Saptparni, also known by its scientific name Alstonia scholaris, is an evergreen tropical tree commonly referred to as the 'Devil's Tree'. This name is attributed to the strong fragrance emitted by its flowers, which some find unpleasant and overwhelming. Despite this, the tree is prized for its ornamental value and medicinal properties.Why Saptparni is Called Devil's Tree:The name 'Devil's Tree' comes from:Strong Fragrance: The flowers of Saptparni have a pungent, sweet smell that can be overpowering, especially at night. Some people find this fragrance unpleasant, associating it with negative connotations.Cultural Beliefs: In some cultures, the tree is associated with negative spirits or superstition due to its strong fragrance and nocturnal blooming.📌Other Options Explanations:(b) Mahua: Mahua (Madhuca longifolia) is a deciduous tree known for its edible flowers and oil-rich seeds.(c) Siris: Siris (Albizia lebbeck) is a deciduous tree with fragrant flowers and medicinal properties.(d) Amaltas: Amaltas (Cassia fistula) is a deciduous tree with beautiful yellow flowers and is known for its laxative properties.🛑Additional Information:Chatim tree: Often referred to as the "blackboard tree" or "chatim tree," Alstonia scholaris is a tropical evergreen tree in the family of dogbanes. It is a common decorative plant in southern China, tropical Asia, and Australasia, where it is native.
Which one of the following is the most significant feature of Japanese style of gardening?
✅Explanation: The most significant feature of Japanese gardens is the artful arrangement of rocks and stones. These elements are carefully placed to create a sense of harmony and balance, and to evoke the natural landscape in a miniature form. Rocks can represent mountains, islands, or even waterfalls, while stones are used to create pathways, borders, and dry riverbeds. The placement of rocks and stones is considered a highly skilled art form in Japanese gardening.Why Rocks and Stones are Significant:Symbolism: Rocks and stones hold symbolic meaning in Japanese culture, representing strength, stability, and permanence.Naturalism: The arrangement of rocks and stones aims to replicate natural landscapes, creating a sense of tranquility and harmony.Focal Point: Large, carefully placed rocks can serve as focal points in the garden, drawing the eye and providing a sense of balance.Dry Landscapes: In some Japanese garden styles, such as Zen gardens, rocks and stones are the primary elements, creating a minimalist and meditative landscape.
The Arka Manik variety of watermelon has resistance against which of the following diseases?
✅Explanation: Arka Manik is a watermelon variety developed by the Indian Institute of Horticultural Research (IIHR) and is known for its triple disease resistance. It has been bred to be resistant to powdery mildew, downy mildew, and anthracnose, which are common fungal diseases that can significantly affect watermelon yield and quality.Disease Resistance in Arka Manik:Powdery Mildew: A fungal disease that appears as a white powdery coating on leaves, stems, and fruits, reducing photosynthesis and hindering growth.Downy Mildew: Another fungal disease that causes yellow spots on leaves, leading to reduced vigor and yield.Anthracnose: A fungal disease that causes dark, sunken lesions on leaves, stems, and fruits, leading to premature fruit drop and yield loss.Benefits of Arka Manik's Disease Resistance:Reduced Pesticide Use: The triple disease resistance of Arka Manik reduces the need for fungicide applications, making it a more environmentally friendly and sustainable option.Higher Yield: By resisting common diseases, Arka Manik can maintain healthy growth and produce higher yields compared to susceptible varieties.Improved Fruit Quality: Healthy plants produce better quality fruits with improved flavor and shelf life.🛑Additional Information::Variety Name: Arka ManikDisease Resistance: Triple disease resistance to anthracnose, powdery mildew, and downy mildewGrowing Conditions: Suitable for sub-tropical conditions, can be grown throughout the year, breaking the seasonal barriersEconomic Returns: Rs. 50-60 thousand per hectareGrowing Duration: 110-115 daysYield: 60 tons per hectareFlesh Characteristics: Deep crimson, granular texture, pleasant aroma, very sweet (TSS 12-15%)Fruit Characteristics: Oval-shaped, light green rind with dark green stripesAverage Fruit Weight: 6 kgSeed Characteristics: Small, with dark brown specks on the testaFoliage: Angular stem with light green, deeply lobed leavesYield Loss Reduction: 50-60% reduction in yield losses due to disease resistanceParentage: An advanced generation derivative of a modified back cross between IIHR 21 and Crimson Sweet
Which of the following is a black rot resistant variety of cabbage?
✅Explanation: Pusa Mukta is a variety of cabbage developed by the Indian Agricultural Research Institute (IARI) with specific resistance against black rot disease. Black rot, caused by the bacterium Xanthomonas campestris, is a serious threat to cabbage crops, leading to significant yield losses. Pusa Mukta's resistance makes it a valuable choice for farmers seeking to protect their crops.Why Pusa Mukta is Black Rot Resistant:Pusa Mukta has been bred through traditional breeding methods to incorporate genetic traits that make it less susceptible to black rot infection. This resistance helps the plant fight off the bacteria and maintain its health and productivity.📌Other Options Explanations:(b) Pusa Sharabati: This is a variety of cauliflower.(c) Pusa Sadabahar: This is a variety of cowpea.(d) Pusa Komal: This is a variety of cauliflower.
What is the approximate seed requirement for one hectare of onion crop?
✅Explanation: The seed requirement for one hectare of onion crop typically ranges from 8 to 10 kg. This can vary slightly depending on the specific onion variety, planting method (direct seeding or transplanting), and desired plant density.Why 8-10 kg is the Ideal Seed Requirement:Seed Size and Weight: Onion seeds are small and lightweight, so a relatively small amount is needed to cover a large area.Plant Density: The desired plant density for onions is usually around 55,000 to 60,000 plants per hectare. The 8-10 kg seed quantity is sufficient to achieve this density.Germination Rate: Onion seeds have a relatively high germination rate, so not all seeds will necessarily produce plants. The 8-10 kg quantity accounts for some seed loss due to non-germination.🛑Additional Information:: Method: Raising seedlings and transplanting (most common method for irrigated crops) Benefits: Results in high yield and large size bulbs Seed Sowing (Plains): Sown during October-November for rabi crop Seed Sowing (Hills): Sown from March to June Nursery Bed Preparation:Width: 90-120 cmHeight: 7.5-10.0 cmConvenient length Nursery Area to Main Field Ratio: 1:20 Seed Rate: 8 to 10 kg/ha Ideal Seedling Characteristics for Transplanting:Height: 15 cmNeck diameter: 0.8 cm Time for Seedling Growth:Ideal growth in 8 weeksMay vary from 6-10 weeks depending on soil, climate, and rain Topping of Seedlings: Practiced if seedlings are overgrown at the time of transplanting
Sprouting of onion bulbs in storage can be checked by a pre-harvest spray of:
✅Explanation: Maleic Hydrazide (MH) is a plant growth regulator that is commonly used to inhibit sprouting in onion bulbs during storage. It works by disrupting cell division in the bulb, preventing the growth of new shoots. MH is typically applied as a foliar spray to the onion plants a few weeks before harvest.Why MH is Effective:Sprout Inhibition: MH effectively suppresses the sprouting of onion bulbs, extending their storage life.Safe for Consumption: When applied at the recommended rates and timing, MH residues in onions are considered safe for consumption.Easy Application: MH can be easily applied as a foliar spray using standard agricultural equipment.📌Other Options Explanations:(a) Cycocel (Chlormequat chloride): This plant growth regulator is used to control plant height and promote branching.(b) NAA (Naphthalene acetic acid): NAA is another plant growth regulator used for various purposes, such as promoting rooting in cuttings.(d) 2,4-D (2,4-Dichlorophenoxyacetic acid): This is a herbicide used to control broadleaf weeds.🔑Key Points  Maleic hydrazide (MH) has been successfully used to inhibit the sprouting of onions during storage. Spraying onion with 2500ppm MH two weeks before harvest completely inhibits the sprouting of onion in storage.
Knol-khol is primarily propagated by:
✅Explanation: Knol-khol (Brassica oleracea var. gongylodes) is a cool-season vegetable that is primarily propagated by seeds. The seeds are sown in nursery beds, and after 4-6 weeks, the seedlings are transplanted to the main field.Why Seed Propagation is Preferred:Simple and Cost-effective: Seed propagation is the most straightforward and economical method for growing knol-khol.Genetic Diversity: Seed propagation allows for genetic variation, which can be beneficial for adapting to different growing conditions and disease resistance.High Success Rate: Knol-khol seeds generally have a good germination rate and establish well in the field.📌Other Options Explanations:(a) Cutting: While knol-khol can be propagated by cuttings (tip cuttings or leaf cuttings). Cutting propagation can be more labor-intensive and may have a lower success rate compared to seed propagation.(b) Bulb: Bulbs are underground storage organs, typically found in plants like onions and tulips.(c) Corm: Corms are also underground storage organ.🛑Additional Information::Knol-khol is usually propagated by seed, the seed rate being 1–1.5kg/ha. Seed should be given a hot water treatment (50°C) for half an hour against black rot and Apron 35 @ 2g/kg seed against downy mildew before sowing in disease-prone areas. The seedlings are raised in the nursery beds. About 4–6 weeks old seedlings are ready for transplanting.
To which plant family does the carnation belong?
✅Explanation: Carnations (Dianthus caryophyllus) are members of the Caryophyllaceae family, also known as the pink or carnation family. This family is characterized by herbaceous plants with opposite leaves and five-petaled flowers. The flowers often have a distinct spicy fragrance.Why Caryophyllaceae is the Correct Answer:Family Characteristics: Carnations exhibit the typical features of Caryophyllaceae, such as opposite leaves, five-petaled flowers, and a swollen node at the base of each stem.Scientific Classification: The scientific name of the carnation, Dianthus caryophyllus, places it within the genus Dianthus, which is a part of the Caryophyllaceae family.📌Other Options Explanations:(b) Compositae (Asteraceae): This family includes plants like sunflowers, daisies, and asters, which have composite flower heads made up of many small florets.(c) Iridaceae: This family consists of plants like irises, crocuses, and gladioli, known for their showy, colorful flowers.(d) Orchidaceae: This is the orchid family, renowned for its diverse and intricate flowers.🔑Key Points Global Importance:Among the most popular commercial cut flowers globally.Ranks second in commercial importance after roses.Reasons for Popularity:Excellent keeping quality.Wide range of forms and colors.High ability to withstand long-distance transportation. Contribution to Trade:Cut carnations, roses, and chrysanthemums contribute close to 50% of the global cut flower trade. Etymology of Genus Name:Dianthus: Derived from Greek words:"Dios" meaning "God" or "divine.""Anthos" meaning "flower."Referred to as the "Divine Flower." Etymology of Species Name:Caryophyllus: Derived from Greek words:"Caryan" meaning "nut.""Phyllon" meaning "leaf."Named by Linnaeus after the clove genus, due to the clove-like fragrance of carnations.
In which city is Vrindavan Gardens located?
✅Explanation: Vrindavan Gardens, also known as Brindavan Gardens, is located in Mysore, Karnataka, India. It is situated adjacent to the Krishnarajasagara Dam, which is built across the Kaveri River. The garden is renowned for its symmetrical layout, terraced gardens, fountains, and musical fountain shows.Why Mysore is the Correct Answer:Vrindavan Gardens is a major tourist attraction in Mysore and is often referred to as the "Garden City of India."The gardens were commissioned by the Maharaja of Mysore and completed in 1932.The musical fountain is a major highlight, attracting visitors with its synchronized water and light displays.📌Other Options Explanations:(a) Srinagar: Srinagar is located in Jammu and Kashmir and is known for its Mughal gardens, such as Shalimar Bagh and Nishat Bagh.(b) Bangalore: Bangalore is a major city in Karnataka known for its parks and gardens, such as Lalbagh Botanical Garden and Cubbon Park.(d) Pinjore: Pinjore is located in Haryana and is known for its Mughal Gardens,Yadavindra Gardens.🔑Key Points  Vrindavan Gardens is a sprawling and lovely garden. The gardens are built across the Cauvery river. It is laid adjacent to the famous Krishnaraja Sagar Dam.
What is the ideal month for pruning ber trees in Rajasthan?
✅Explanation: Pruning in ber trees is essential to stimulate new growth, which subsequently leads to better flowering and fruiting. In Rajasthan, May is the most suitable month for pruning because:The trees enter a dormant phase during the peak summer months.Pruning in May allows enough time for the emergence of new shoots before the monsoon season, which aids in healthy growth.It prepares the tree for optimal flowering and fruiting during the appropriate season.Reasons for May being the Ideal Pruning Time:Dormancy: Pruning during dormancy minimizes stress on the tree and allows it to recover quickly.Reduced Sap Flow: Sap flow is minimal during the dry summer months, minimizing the risk of excessive sap loss from pruning cuts.Promotes New Growth: Pruning stimulates the growth of new shoots and flower buds, leading to increased fruit production.Disease Prevention: Removing dead or diseased branches during pruning helps prevent the spread of infections.🛑Additional Information::List of common economic fruit crops and their ideal pruning month:1. MangoPruning Month: July–AugustReason: Post-harvest pruning during the monsoon helps remove old and diseased branches, stimulating new growth and preparing the tree for flowering in winter.2. GuavaPruning Month: May–June (Summer Crop), October–November (Winter Crop)Reason: Guava bears fruit on current season's growth, so pruning before new growth ensures higher yields.3. PomegranatePruning Month: January–February and June–JulyReason: Seasonal pruning maintains an open canopy, removes deadwood, and stimulates new shoots for flowering and fruiting.4. Citrus (Orange/Lemon)Pruning Month: March–AprilReason: Post-harvest pruning before the onset of new flush helps remove unproductive branches and pests, improving fruit quality.5. ApplePruning Month: December–JanuaryReason: During winter dormancy, pruning helps shape the tree, remove dead wood, and encourage flowering in spring.6. GrapesPruning Month: April–May (Summer Pruning) and October–November (Winter Pruning)Reason: Summer pruning removes unnecessary growth, and winter pruning focuses on fruit-bearing canes for the next season.7. PapayaPruning Month: August–SeptemberReason: After the monsoon, pruning helps maintain canopy structure and removes dead or diseased leaves, boosting productivity.8. BananaPruning Month: Throughout the year (as needed)Reason: Regular removal of suckers and dead leaves is essential for healthy growth and fruit development
Floribunda is a variety of:
✅Explanation: Floribunda is a type of rose known for its abundant clusters of blooms. They were developed by crossing hybrid tea roses with polyantha roses, resulting in a plant with the elegant flower shape of hybrid teas and the prolific blooming habit of polyanthas. Floribundas are popular in gardens due to their colorful displays and relatively easy care.📌Other Options Explanations:(a) Gladiolus: Gladiolus is a genus of perennial flowering plants in the iris family (Iridaceae). They are known for their tall spikes of colorful flowers.(b) Marigold: Marigolds are annual or perennial herbs in the sunflower family (Asteraceae), with bright orange, yellow, or red flowers.(d) Gerbera: Gerbera is a genus of perennial herbs in the sunflower family (Asteraceae). They are known for their large, daisy-like flowers.
The preferred method for propagating date palms is through:
✅Explanation: Date palms are most commonly propagated through off-shoots, also known as suckers. These are small, young plants that develop at the base of the mature date palm tree. Off-shoots have their own root systems and can be carefully separated from the parent plant and transplanted to grow into new date palms.Why Off-shoots are Preferred for Date Palm Propagation:Genetic Identicality: Off-shoots are clones of the parent plant, ensuring that the new date palms will have the same desirable characteristics, such as fruit quality and yield.Faster Maturity: Date palms grown from off-shoots typically mature and bear fruit earlier than those grown from seeds.Higher Success Rate: Off-shoot propagation generally has a higher success rate than seed propagation, as the young plants are already established and have their own roots.🛑Additional Information::Offshoots are auxiliary buds developed between leaf base and the trunk during the juvenile phase of the palm. The number of offshoots developed per palm is dependent on the variety/clones which are limited to a short vegetative phase of the palms and in initial 10-15 years of age, the palm produces an average of 10-20 offshoots. The offshoot development process is very slow, which retard the fast multiplication process.
Which of the following fruits has the highest production in India?
✅Explanation: Banana is the fruit with the highest production in India. It accounts for roughly 30% of the total fruit production in the country. The favorable climate in many parts of India, combined with the banana's relatively short growth cycle and high yield potential, contribute to its widespread cultivation.
In hilly areas, fruit plants should be planted in which system?
✅Explanation: The contour system is the ideal method for planting fruit trees in hilly areas. This system involves planting trees along the contour lines of the slope, which are imaginary lines that connect points of equal elevation. This helps to prevent soil erosion, conserve water, and maximize land utilization on sloping terrains.Why the Contour System is Ideal for Hilly Areas:Prevents Soil Erosion: Planting along contour lines creates natural barriers that slow down water runoff, reducing soil erosion and nutrient loss.Conserves Water: Contour lines help to capture rainwater and allow it to infiltrate the soil, improving moisture availability for the plants.Maximizes Land Use: The contour system allows for efficient use of land on slopes, accommodating more trees without compromising soil health.📌Other Options Explanations:(a) Quincunx system: This system involves planting trees in a staggered arrangement, with the fifth tree at the center of a square formed by the other four. (b) Rectangular system: This system involves planting trees in a rectangular grid pattern. (d) Square system: Similar to the rectangular system, the square system is not ideal for hilly areas due to the risk of soil erosion.🔑Key Points  Contour system:o It is followed in hilly areas where land is difficult for irrigation and soil erosion is a major problem.o The main purpose of this system is to minimize the soil loss due to erosion and conserve sufficient soil moisture for crops. Square system:o In this system, trees are planted on each corner of a square. Thus every four plants make one square.o Examples of this planting are Banana, Manago, citrus, etc. Quincunx system:o In this system, trees are planted on each corner of a square along with one plant in the middle of the square.o Examples of this planting are Papaya, Pineapple, etc. Hexagonal system:o In this system, trees are planted at the corner of the equilateral triangle. o Thus six trees are planted making a hexagon and another plant in the centre.
Phalsa fruit are available in the market from:
✅Explanation: Phalsa (Grewia asiatica) is a small, tangy fruit commonly grown in tropical and subtropical regions of India. The fruiting season of phalsa typically begins in late April and continues until May. During this period, the fruits are harvested and made available in the market. It has a short season and is typically available in the market for a limited time, usually until mid-June.
Which of the following fruit plants require annual pruning?
✅Explanation: Grapes require annual pruning to maintain their shape, encourage fruit production, and control diseases. Pruning involves removing unwanted or unproductive canes (branches), and it is typically done during the dormant season in winter. Proper pruning helps to ensure the vine focuses its energy on producing high-quality fruit.Pruning is essential for:Regulating the vine’s growth.Ensuring proper balance between vegetative and reproductive growth.Promoting better-quality fruit by directing energy to productive canes.Why Grapevines Need Annual Pruning:Fruit Production: Pruning removes old wood and encourages the growth of new shoots that will bear fruit.Shape and Size Control: Pruning helps maintain the desired shape and size of the vine, making it easier to manage and harvest.Disease Prevention: Removing dead or diseased wood helps to prevent the spread of infections.Improved Air Circulation: Pruning opens up the canopy, allowing better air circulation and reducing the risk of fungal diseases.
Fruit cracking is a serious problem in fruits of:
✅Explanation: While fruit cracking can occur in various fruits, it is a particularly significant issue for pomegranate growers. This physiological disorder results in the splitting or cracking of the pomegranate's leathery skin, making it susceptible to fungal and bacterial infections, leading to substantial crop losses.Why Fruit Cracking is a Problem in Pomegranates:Reduced Marketability: Cracked pomegranates are visually unappealing and have a lower market value.Spoilage and Disease: The cracks create entry points for pathogens, leading to rot, decay, and reduced shelf life.Yield Loss: Severe cracking can cause the fruit to drop prematurely, significantly impacting yields.🛑Additional Information:Causes of Fruit Cracking in Pomegranates:Irregular Watering: Inconsistent watering, especially during periods of rapid fruit growth or drought, can lead to uneven water absorption and internal pressure, causing the skin to crack.Excessive Rainfall: Heavy rainfall close to harvest time can cause rapid water uptake and fruit expansion, leading to cracking.Nutrient Deficiencies: Inadequate levels of calcium, boron, or potassium can weaken the fruit's skin, making it more prone to cracking.High Temperatures: Extreme heat can stress the plant and contribute to cracking.Variety Susceptibility: Some pomegranate varieties are more prone to cracking than others.
What fruit is ideal for making jelly?
✅Explanation: Guava is the best fruit for making jelly due to its high pectin content. Pectin is a natural gelling agent found in fruits, and it's essential for achieving the right texture and consistency in jellies. Key Features of Guava for Jelly:High pectin content helps in proper gel formation.Balanced acidity enhances flavor and preserves the jelly.Its natural aroma adds to the appeal of the jelly.🔑Key Points Guava: Guava (Psidium guajava) is a native of tropical America but has long been naturalized in India. Guavas are mostly eaten as fresh fruits. They are also canned to some extent, preserved spiced, or made into jam and marmalades. Guavas are notable for their high content of vitamin C which, in many varieties, is 4 to 10 times greater than in citrus fruits. They also contain a considerable amount of pectin, hence, making them ideal for jelly preparation.Important Points The pectic substances present in fruit are protopectin, pectin, and pectic acid. The protopectin present in underripe fruits inhibits gel formation. The pectin present in properly matured fruits forms a solution with water. In the presence of sugars and acids present in fruit, the pectin sets into a jelly.
Kinnow is a citrus hybrid that is a cultivar of.
📌Other Options Explanations: (a) Phalsa: Phalsa is unrelated to citrus fruits and belongs to the family Malvaceae, not Rutaceae (the citrus family). (c) Sweet Orange: Sweet orange (Citrus sinensis) is a different citrus species. (d) Sweet Lime: Sweet lime (Citrus limetta) is another citrus specie.🛑Additional Information::Features of Kinnow:High Yield: Known for its prolific production of juicy fruits.Rich in Vitamin C: Popular for its nutritional benefits.Cold Resistance: Adaptable to various climatic conditions.
Which of the following growth regulators is best for inducing roots in cuttings?
✅Explanation: IBA is a synthetic auxin, a plant hormone that plays a crucial role in root development. It is widely used in horticulture and agriculture for stimulating root formation in cuttings, particularly in woody and semi-hardwood species. IBA is often available in powder or liquid form and is easy to apply.📌Other Options Explanations:(a) 2,4-D (2,4-Dichlorophenoxyacetic acid): This is a synthetic auxin primarily used as a herbicide. While it can promote root formation, it can also be phytotoxic (harmful to plants) at high concentrations.(b) N.A.A. (Naphthalene acetic acid): This is another synthetic auxin used for rooting cuttings. (d) I.A.A. (Indole-3-acetic acid): This is a naturally occurring auxin.
What is the botanical name of sweet orange?
✅Explanation: Citrus sinensis is the scientific name for the sweet orange, the most commonly cultivated and consumed type of orange. It encompasses various cultivars like Valencia, navel, and blood oranges. Citrus sinensis, a hybrid between pomelo (Citrus maxima) and mandarin (Citrus reticulata), also known as the sweet oranges, is a commonly cultivated species of orange that includes Valencia oranges, blood oranges and navel oranges.📌Other Options Explanations:(a) Citrus reticulata: This is the botanical name for mandarin oranges, a smaller, sweeter citrus fruit with a looser skin.(c) Citrus grandis: This is the botanical name for the pomelo, a large citrus fruit with a thick rind and a slightly sweet or sour taste.(d) Citrus paradise: This is the botanical name for the grapefruit, a large citrus fruit with a slightly bitter taste and a variety of colors. 🛑Additional Information::UsesThe orange fruit is an important agricultural product, used for both the juicy fruit pulp and the aromatic peel (rind). Orange blossoms (the flowers) are used in several different ways, as are the leaves and wood of the tree.Giant swallowtail larvaGiant swallowtail caterpillars (Papilio cresphontes) cause serious damage to this crop, especially to young trees.
Where is the National Research Centre for Citrus located?
✅Explanation: The National Research Centre for Citrus (NRCC), now known as the ICAR-Central Citrus Research Institute (CCRI), is located in Nagpur, Maharashtra, India. The city is known for its favorable climate for citrus cultivation and is a major center for orange production. The NRCC conducts research on various aspects of citrus fruits, including genetics, breeding, cultivation practices, pest and disease management, and post-harvest technologies.🛑Additional Information:: The National Research Centre for citrus fruits is located in Nagpur, Maharashtra. Nagpur is a city in the state of Maharashtra and is located in Central India. This is because Nagpur has the perfect climatic conditions to grow citrus fruits. Oranges from the region are famous nationally and internationally. The National Research Centre for citrus fruits is an institute for research in citrus fruits and horticulture in India. NRCC was founded on 29 November 1985. The owner of NRCC is the Indian Council of Agricultural Research. Brazil is the top producer of citrus fruits in the world with an annual production of about 20 million tons.
What is the flowering time of Date palm?
✅Explanation: Date palms (Phoenix dactylifera) typically flower between February and March, depending on the climatic conditions and location. During this time, the male and female flowers of the date palm are pollinated to ensure fruit production. The flowering period is crucial for the formation of dates.
What is the best climate for growing bananas?
✅Explanation: Bananas thrive in tropical climates, characterized by warm temperatures, high humidity, and abundant rainfall throughout the year. The ideal temperature range for banana cultivation is between 20-30°C (68-86°F), with no frost. They also require well-draining soil and plenty of sunlight.🔑Key Points about Banana Cultivation:Temperature Range:Banana thrives in 15ºC to 35ºC temperatures.Chilling injury can occur when temperatures drop below 12ºC, making it sensitive to cold weather.Humidity:Ideal relative humidity for banana growth is between 75% and 85%.Elevation:Banana can be grown from sea level up to an elevation of 2000 meters above sea level, depending on the variety and local conditions.Climate:It prefers tropical humid lowlands but can also be cultivated in dry mild subtropics by selecting appropriate varieties.Monsoon (June to September) with 650-750 mm of rainfall is crucial for vigorous vegetative growth.Wind Sensitivity:High wind speeds above 80 km/h can damage the banana crop, indicating the need for protective measures in windy regions.Varieties for Different Regions:At higher altitudes, varieties like ‘Hill banana’ are more suited, which are adapted to the cooler conditions.
Litchi is propagated?
✅Explanation: Litchi is most commonly propagated through a method called gootee, also known as air layering. In this technique, a branch of the parent tree is wounded and wrapped with moist sphagnum moss. Roots develop from the wounded area, and the rooted branch is then separated and planted as a new tree.🔑Key Points  Air layering is also known as Chinese layering, Pot layering, Marcottage or Goote. Air layering is an ancient method of layering, that originated from China. Air layering is commercially used in the propagation of many tropical and subtropical trees and shrubs including litchi, guava, mango, Persian lime, croton, fiscus etc. In Air layering roots develop on an aerial shoot where the stem has been girdled. The best rooting medium for air layering is Sphagnum moss as it holds a large amount of water till root initiation and their development.🛑Additional Information:Layering: Layering is a process of the development of roots on a stem while it is still attached to the plant. The rooted stem is then detached to become a new plant growing on its own roots and that rooted stem is called a Layer. It is an asexual method or vegetative method of propagation.Types of Layering (Apart from Air layering)1. Simple layering or Tongue layering: Simple layering consists of bending an intact shoot to the ground to cause adventitious roots to form. These shoots are bent and “pegged down” at a location 15 to 20 cm from the tip forming a “U” shape. Bending, twisting, cutting, or girdling at the bottom of the “U” stimulates rooting at that location.2. Compound or Serpentine layering: Compound layering is a modification of simple layering in which a one-year-old branch is alternatively covered and exposed along its length. Compound layering is an easy plant propagation method but is suitable only for plants producing slender, long, and flexible shoots. Muscadine grape is commercially propagated by this method.3. Continuous or Trench layering Continuous or Trench layering is the most common method of propagation for woody plants, which produce long vines and are difficult to propagate by other methods of propagation. In the continuous layering method, the mother plants are planted at the base of a trench at an angle of 45º in rows spaced 90 cm apart. The long and flexible stems of such plants are pegged down on the ground to form a continuous line of layered plants. Walnut and vigorous rootstocks of apple varieties M-16 and M-25 can easily be propagated by trench layering. In this method, it is important to establish a permanent row of plants to be propagated.4. Mound or Stool layering The term stooling was first coined by Lynch in 1942 for mound layering. Mound layering is a method of propagation in which the shoots/plants are cut back to the ground and soil or rooting medium is mounded around new sprouts/shoots to stimulate roots to develop at their bases. The mound layering method is commercially used to propagate apple, pear, quince, currants, gooseberry, and other fruit crops
How is pineapple propagated?
✅Explanation: Pineapple is primarily propagated through suckers, which are shoots that develop from the base of the main plant. These suckers can be separated from the parent plant and planted to grow into new pineapple plants.🛑Additional Information::Pineapple Propagation:Methods of Propagation:Suckers: Arise in the axils of leaves on the main stem; ideal for faster growth.Slips: Arise immediately below the fruit; preferred for early bearing and larger fruits.Crown: Leaves above the fruit; takes longer to bear and yields smaller fruits.Preferred Planting Material:Suckers (400-500g) or Slips (350-450g) are best for planting.Avoid using too large suckers/slips as they cause competition.Curing Process:Cure suckers/slips for 8-10 days in the shade before planting to prevent decay.Preparation Before Planting:Remove lower leaves of the sucker for better root formation.Treat with Monocrotophos (0.15%) for mealy bugs and Carbendazim (0.1%) for heart rot.
In which plant is the alkaloid morphine found?
✅Explanation: Morphine is a naturally occurring alkaloid found in the opium poppy (Papaver somniferum). It is a potent pain reliever and a narcotic drug with a high potential for addiction.📌Other Options Explanations:(a) Black pepper: Black pepper contains the alkaloid piperine, which gives it its characteristic pungency.(c) Mentha: Mentha plants (such as peppermint and spearmint) contain menthol, a terpene with a cooling sensation.(d) Betelvine: Betelvine leaves contain arecoline, an alkaloid with stimulant properties.🔑Key Points Opioids: Opiates or drugs obtained from opium or artificially produced substitutes that have opium-like effects. They produce morphine-like effects. Medically they are primarily used for pain relief, including anaesthesia. Opioids are drugs, which bind to specific opioid receptors present in our central nervous system and gastrointestinal tract. Example: codeine, morphine, heroin.Morphine: The poppy plant (Papaver somniferum) is a source of many alkaloids like morphine, codeine, narcotine, and thebaine. Morphine is extracted from the latex of the poppy plant. It is named after Morpheus, the Greek god of dreams, morphine provides a feeling of euphoria oft-described as a dreamlike state. They bind to the specific opioid receptors in the central nervous system (CNS) and gastrointestinal tract. Morphine is an effective sedative and painkiller.
Where is the Indian Institute of Spices Research located?
✅Explanation: The Indian Institute of Spices Research (IISR) is situated in Kozhikode, Kerala, India. Kozhikode is also known as Calicut. The institute is a leading research center dedicated to the advancement of spice cultivation and processing in India. It plays a crucial role in developing new varieties of spices, improving cultivation practices, and promoting sustainable spice production.🛑Additional Information:: Indian Institute of Spices Research is located in Moozhikkal, Silver Hills, Kozhikode, Kerala. It is a subsidiary of Indian Council of Agricultural Research (ICAR), New Delhi, under the Ministry of Agriculture, India. The Institute provides research facilities related to spice crops and ensure standard methods to make large scale productions also taking pest and disease management in measures.
What is the most suitable age of plants for the collection of guggul resin/gum?
✅Explanation: The most suitable age for collecting guggul resin (or gum) from Commiphora wightii (the guggul tree) is typically around 6 years. At this age, the tree has developed enough to produce a significant amount of resin, which can be tapped without damaging the plant.
Which of the following spices belong to the family Zingiberaceae?
✅Explanation: All three spices—ginger, turmeric, and cardamom—belong to the Zingiberaceae family, commonly known as the ginger family. Here's a breakdown:Ginger (Zingiber officinale)Turmeric (Curcuma longa)Cardamom (Elettaria cardamomum)These plants share common characteristics, such as rhizomatous growth and aromatic compounds, making them significant both in culinary and medicinal uses.🔑Key Points  A spice is a seed, fruit, root, bark, or other plant substance primarily used for flavouring or colouring food.o Clove - Flowero Cinnamon - Inner barko Turmeric - Stem Spices are distinguished from herbs, which are the leaves, flowers, or stems of plants used for flavouring or as a garnish.  Most spices are grown in the tropical regions of the world, with some thriving in the cool misty highlands. Many of the seed spices come from more temperate areas, such as coriander seed, which is grown in Northern India, Africa. Pepper, turmeric, cardamom, and cumin are some examples of Indian spices.
What is the seed requirement (per hectare) for sowing Ashwagandha?
✅Explanation: The recommended seed rate for sowing Ashwagandha (Withania somnifera) per hectare is generally 10-12 kg. This can vary slightly depending on the specific variety, sowing method (broadcasting or line sowing), and local conditions.🛑Additional Information::Economic Part: RootMajor Constituents:Total alkaloid (0.13-0.31%)Withanine, SomniferineUses:Cures bronchitis, rheumatism, inflammationVarieties:Poshita and Rakshita: High-yielding varieties (released by CSIR-CIMAP, Lucknow)Jawahar 20: Cultivated in Madhya PradeshWSR: Released by CSIR-Regional Research Laboratory, JammuNagori: Local variety with starchy rootsSoil and Climate:Soil: Sandy loam, slightly alkaline (pH 7.5-8.0)Altitude: 600-1200mTemperature: 20°C to 35°CSeed Rate:Broadcasting: 10-12 kg/haTransplanting: 5 kg/haSpacing: 60x60 cm for transplanting (6-week-old seedlings)Season:Planting: August-September (late rainy season)Harvesting: May (150-170 days after sowing)Field Management:Manuring: Grown on residual fertility, no fertilizer neededWeeding: Hand weeding at 30 days after sowingPlant Protection:Leaf Blight & Dieback: Diethane M 45 (0.3%)Damping Off & Seedling Rot: Trichoderma viride (2 kg/ha), Pseudomonas fluorescens (2 kg/ha)Harvesting:Maturity: Dry leaves, red berriesTime: January to MarchMethod: Uproot the plant, cut stem 1-2 cm above the crownPost-Harvest Practices:Roots: Cut into 7-10 cm pieces for dryingBerries: Harvested, dried, and threshed to remove seedsGrading of Roots:A Grade: Up to 7 cm long, 1-1.5 cm diameter, smooth, pure white insideB Grade: Up to 5 cm long, 1 cm or less diameter, brittle, white insideC Grade: 3-4 cm long, 1 cm or less diameterD Grade: Small, semisolid or hollow, yellowish inside, <1 cm diameterYield:Roots: 400-1200 kg/ha (dried)Seeds: 200-500 kg/ha
Samse and Golse are popular varieties of which spice?
✅Explanation: Samse and Golse are popular varieties of large cardamom (also known as Amomum subulatum), which is grown primarily in the eastern Himalayas and parts of India. Large cardamom is distinct from small cardamom, and it is widely used in cooking, as well as in traditional medicine.📌Other Options Explanations: (b) Small cardamom: Small cardamom is a different spice, known scientifically as Elettaria cardamomum.(c) Black pepper: Black pepper is from a completely different plant (Piper nigrum). (d) Ginger: Ginger is a root spice (Zingiber officinale).
Cinnamon belongs to which plant family?
✅Explanation: Cinnamon is a spice derived from the inner bark of trees belonging to the genus Cinnamomum, which is a part of the Lauraceae family. This family is also known as the laurel family and includes other aromatic plants like bay leaves and avocado trees.📌Other Options Explanations:(b) Zingiberaceae: This family is known as the ginger family and includes plants like ginger, turmeric, and cardamom.(c) Piperaceae: This family is known as the pepper family and includes black pepper, white pepper, and long pepper.(d) Rutaceae: This family is known as the citrus family and includes oranges, lemons, limes, and grapefruits.
What is the best way of preserving pure fruit juice?
✅Explanation: Pasteurization is the best method for preserving pure fruit juice. This process involves heating the juice to a specific temperature to kill harmful microorganisms and enzymes that can cause spoilage, while maintaining the flavor and nutritional content of the juice. After pasteurization, the juice is typically sealed in sterilized containers to prevent contamination.🔑Key Points  Pasteurization is a process in which heat is applied to beverages to kill pathogens and extend shelf life. In Pasteurization the heat applied is below the boiling point of water which is mildly heated to kill off harmful bacteria, salmonella, and other disease-causing pathogens. The process is named after Louis Pasteur who developed the method to kill microbes in 1864. While Pasteurization kills microorganisms and pathogens it is not a form of sterilization.
What is the minimum percentage of juice required in fruit squash?
✅Explanation: According to food safety standards, fruit squash must contain a minimum of 25% fruit juice or pulp. This ensures a certain level of fruit content and flavor in the product.Fruit Squash:Definition: A fruit beverage containing:At least 25% fruit juice or pulp40-50% total soluble solids1.0% acid350 ppm sulphur dioxide or 600 ppm sodium benzoate as preservativesDiluted before servingCommon Fruits Used:MangoOrangePineappleOther Fruits for Squash:Lemon, Bael, Papaya (using potassium metabisulphite (KMS) as a preservative)Jamun, Passion-fruit, Peach, Plum, Raspberry, Strawberry, Grapefruit (using sodium benzoate as a preservative)
For which vegetable is flame peeling typically used?
✅Explanation: Flame peeling is a method of peeling onions that involves exposing them to high temperatures to burn off the outer skin. The charred skin is then removed by water jets or brushes. This method is efficient for large-scale onion processing and is often used in the food industry.🛑Additional Information::Flame Peeling:Used For:OnionsGarlicBrinjal (Eggplant)Peeler Setup:Conveyor belt: Carries and rotates food through the furnace.Furnace Temperature: Heated to more than 1000°C.Process:The outer layer and root hairs of onions are burnt off.Charred skin is removed manually after the process.Purpose: Removes the outer layer of the produce efficiently using high heat.
At what temperature is syrup or brine filled in the can during canning?
✅Explanation: Syrup or brine is typically filled in the can at a temperature of 79° to 82°C during the canning process. This temperature is crucial for several reasons:Microbial Safety: The high temperature helps to destroy microorganisms that could cause spoilage or foodborne illness.Heat Transfer: The hot syrup or brine helps to heat the contents of the can more quickly, ensuring proper sterilization.Vacuum Creation: As the can cools, the contents contract, creating a vacuum seal that prevents air from entering and spoiling the food.
What is the approximate reduced oxygen level used in controlled atmosphere storage for most fruits?
✅Explanation: In controlled atmosphere (CA) storage, the oxygen level is typically reduced to around 5% for most fruits. This low oxygen environment slows down respiration and extends the shelf life of the fruit by delaying ripening and reducing spoilage.
A good jam should contain in invert sugar -
✅Explanation: Invert sugar is a mixture of glucose and fructose, formed by the breakdown of sucrose (table sugar). It is important in jam making for the following reasons:Prevents Crystallization: Invert sugar interferes with the crystallization of sucrose, keeping the jam smooth and spreadable.Improves Texture: It contributes to the jam's desirable thick, syrupy texture.Enhances Flavor: Invert sugar is sweeter than sucrose, so it can improve the jam's overall flavor.A good jam typically contains between 30% and 50% invert sugar. This balance ensures the jam has the right sweetness, texture, and shelf life.🛑Additional Information:Preparation of jam:1. Ripe fruits are selected and thoroughly washed to remove dust.2. Fruits are chopped, mashed, or diced.3. If the fruit has little to no juice of its own, a small quantity of water is added.4. Sugar is added in proper quantity.5. The finished product should contain 30-50% invert sugar to avoid the crystallization of cane sugar in the jam during storage.6. If the fruit is deficient in acid and pectin, commercial preparations are added before the addition of sugar.7. The mixture is immediately heated with constant stirring.8. After that, packed in jars and are pasteurized for about 30 minutes.
Degreening of citrus fruits can be achieved through -
✅Explanation: Degreening is the process of removing the green chlorophyll pigment from the skin of citrus fruits to reveal their natural color. Ethylene is a plant hormone that plays a crucial role in fruit ripening, including the degreening of citrus fruits. When citrus fruits are exposed to ethylene gas, it triggers the breakdown of chlorophyll, allowing the underlying yellow or orange pigments to become visible.📌Other Options Explanations:(a) Gibberellic acid: This hormone is primarily involved in stem elongation and seed germination.(b) Auxin: This hormone is involved in various plant growth processes, such as cell elongation and root development.(d) Maleic Hydrazide: This is a plant growth regulator used to inhibit growth.
For successful cultivation of banana, what climate is required?
✅Explanation: Bananas are native to tropical regions and thrive in warm, humid climates. These conditions provide the ideal environment for their growth and development.Humid: High humidity levels ensure adequate moisture for the plant, preventing it from drying out and promoting lush growth.Tropical: Tropical climates offer consistent warmth throughout the year, with average temperatures ranging between 27°C and 35°C (80°F and 95°F). This consistent warmth is crucial for banana plants, as they are sensitive to cold temperatures.Why Other Options Are Incorrect:b) Arid and tropical: Arid climates are characterized by low rainfall and dry conditions, which are detrimental to banana plants. They require ample water to flourish.🛑Additional Information::Temperature Range: 15ºC – 35ºCRelative Humidity: 75-85%Preferred Environment: Tropical humid lowlandsGrown from sea level to 2000m above m.s.l.Climate Adaptability in India:Cultivated from humid tropical to dry mild subtropics through appropriate variety selection.Chilling Injury: Occurs below 12ºC.Wind Damage: High winds exceeding 80 km/hr can damage the crop.Monsoon Requirements:4 months of monsoon (June to September)Average rainfall: 650-750 mm for vigorous vegetative growth.High Altitude Cultivation: Restricted to varieties like ‘Hill banana’.
Maximum number of plants is accommodated in which system of planting?
✅Explanation: In the hexagonal system of planting, the plants are arranged in a pattern where each plant is surrounded by six others, creating a more compact arrangement than other planting systems. This allows for the maximum number of plants to be accommodated in a given area, as it optimizes the use of space. 🛑Additional Information::Layout Systems for Planting:Square System:Trees planted on each corner of a square.Commonly followed and easy to layout.Central space between four trees can be used for short-lived filler trees.Allows intercropping and cultivation in two directions.Rectangular System:Trees planted on each corner of a rectangle.Uneven distribution of space per tree.Wider alley spaces for easy intercultural and mechanical operations.Hexagonal System:Trees planted at the corners of an equilateral triangle.6 trees form a hexagon with the 7th tree at the center (called "septule").Equal spacing but difficult to layout.Accommodates 15% more trees than the square system.Difficult cultivation compared to the square system.Diagonal or Quincunx System:Square planting method with an additional plant at the center.Accommodates double the number of plants but unequal spacing.Filler tree may be short-lived and removed after a few years.Triangular System:Trees planted based on an isosceles triangle.Even-numbered rows are midway between odd rows.Distance between adjacent trees and rows is equal.Each tree occupies more area, leading to fewer trees per hectare than the square system.Contour System:Used in hilly areas where plants are planted along the contour to minimize erosion.Suitable for land with undulated topography, where irrigation is difficult.Designed to slow down water flow and conserve soil moisture.Terrace system follows planting on flat strips along contours to prevent soil erosion.The contour terrace width varies with slope steepness.Double Hedge Contour system accommodates 22% higher population than Single Hedge Contour system.
Necrosis in Aonla is mainly due to the deficiency of which nutrient?
✅Explanation: Necrosis in Aonla (Indian gooseberry) is primarily caused by boron deficiency. Boron is a micronutrient that plays a crucial role in cell wall formation, cell division, and the transport of sugars within the plant. A deficiency of boron leads to the breakdown of cell walls, resulting in the death of plant tissues (necrosis). In Aonla, boron deficiency typically manifests as dieback of shoots, cracking of fruits, and internal necrosis of fruits.Why Other Options Are Incorrect:b) Manganese: Manganese deficiency can cause chlorosis (yellowing of leaves) and other symptoms in Aonla.c) Nitrogen: Nitrogen deficiency primarily leads to stunted growth and chlorosis.d) Magnesium: Magnesium deficiency can cause interveinal chlorosis in Aonla.
Pomegranate is commercially propagated through...
✅Explanation: Pomegranates are commercially propagated through both stem cuttings and air layering. These vegetative propagation methods ensure that the resulting plants are genetically identical to the parent plant, maintaining desirable traits such as fruit quality and yield.Stem Cuttings: This involves taking a section of a healthy stem and planting it in a suitable medium under controlled conditions to encourage root development.Air Layering: This method involves making a cut in a stem and wrapping it with moist material to induce root formation. Once roots have developed, the rooted portion is separated from the parent plant and planted.🔑Key Points  Pomegranate is propagated vegetatively by Air layering or Gootee and Cutting. Air layering is usually done during the rainy season. Vegetative propagation techniques (Cutting and Air layering) are practices to raise the sampling for the commercial production of pomegranate. These techniques are major adopted practices in pomegranate propagation.🛑Additional Information:: Air layering: Air layering is an old technique use to propagate many woody plants. It is a form of root cutting where adventitious roots are produced while the stem is still attached to the mother plant. The rooted part of the shoot is detached from the mother plants after it is rooted well. This is a simple method of propagation of pomegranate.Cutting: Cutting is an old and easiest method of pomegranate propagation. Generally, 15-20 cm length of the shoot with pencil size thickness is most practicing by nurserymen.
Coconut belongs to the family.......
✅Explanation: The coconut tree (Cocos nucifera) belongs to the family Arecaceae, commonly known as the palm family. This family is comprised of various species of palms, including date palms, oil palms, and betel nut palms. These plants share similar characteristics, such as unbranched stems, large evergreen leaves, and distinctive fruits.📌Other Options Explanations:b) Anacardiaceae: This family includes cashew, mango, and pistachio trees.c) Zingiberaceae: This family includes ginger, turmeric, and cardamom plants.🛑Additional Information::VARIETIES AND HYBRIDSa. VarietiesEast Coast TallWest Coast TallVPM-3 (Selection from Andaman Ordinary Tall)ALR (CN -1) (Selection from Arasampatty Tall)COD (Dwarf for tender coconut purpose only)b. Hybrids Tall x Dwarf (To be grown under well managed conditions)VHC 2 - ECT X MYDVHC 3 - ECT X MOD
National Research Centre for Banana is located at-
✅Explanation: The National Research Centre for Banana (NRCB) is located in Tiruchirappalli, Tamil Nadu, India. It was established in 1993 by the Indian Council of Agricultural Research (ICAR) with the aim to enhance banana and plantain production and productivity through research.🔑Key Points  National Research Centre for Banana was established on 21st August 1993 at Tiruchirappalli, Tamil Nadu by ICAR, New Delhi It was established with an aim to increase the production and productivity of bananas and plantains through mission mode basic and strategic research approaches. The Centre works on four major thrust areas of research viz., Crop Improvement, Crop Production, Post Harvest Management, and Crop Protection. It has well-equipped laboratories for tissue culture, biotechnology, soil science, nutrient management, physiology, biochemistry, entomology, nematology, fungal, bacterial, viral pathology, and post-harvest technology research. Its vision is to increase the production and productivity of quality bananas through technological interventions.
The fruits which can be ripened artificially after harvesting are known as...
✅Explanation: Climacteric fruits are those that continue to ripen even after being harvested. They undergo a ripening process called the climacteric rise, characterized by a burst of ethylene production, increased respiration, and changes in texture, color, and flavor. This allows them to be harvested before they are fully ripe and then ripened artificially using ethylene gas or other methods.Examples of climacteric fruits include:ApplesBananasMangoesTomatoesAvocados📌Other Options Explanations:b) Non-climacteric fruits: These fruits do not ripen significantly after harvest. They reach their peak of ripeness while still attached to the plant and do not undergo a climacteric rise. Examples include grapes, citrus fruits, and berries.🔑Key Points  The climacteric is a stage of fruit ripening associated with increased ethylene production and a rise in cellular respiration. Apples, bananas, melons, apricots, and tomatoes, among others, are climacteric fruits. Climacteric fruits: Those fruits that can ripen after being picked and produce much more ethylene than non-climacteric, which cannot ripen once removed from the plant. non-climacteric fruits are characterized by ripening transitions that do not strictly depend on a significant increase in ethylene production and an associated rise in respiration rate. The Non-climacteric fruits include strawberry, grape, raspberry, cherry, citrus, and many others.
Vinegar made from apple juice is known as...
✅Explanation: Vinegar made from apple juice is known as apple cider vinegar (ACV) or simply apple vinegar. It is produced through a two-step fermentation process:Alcoholic Fermentation: Yeast converts the sugars in apple juice into alcohol.Acetic Acid Fermentation: Bacteria (Acetobacter) convert the alcohol into acetic acid, the main component of vinegar.Apple cider vinegar is known for its potential health benefits and is used in various culinary applications, including salad dressings, marinades, and as a natural preservative.🔑Key Points  Apple cider vinegar can help manage blood sugar, improve symptoms of PCOS and promote weight loss. A typical dose is 1 to 2 tablespoons (15–30 ml) mixed with water and taken before or after meals. Apple Cider Vinegar:o Apple cider vinegar, or cider vinegar, is a vinegar made from fermented apple juice.o It is used in salad dressings, marinades, vinaigrettes, food preservatives, and chutneys.🛑Additional Information: Apple Cider Vinegar vs. White Vinegaro Apple cider vinegar contains about five to six percent acetic acid, while white vinegar contains five to ten percent. This higher acid concentration makes most white vinegar more acidic than their apple-based counterpart.o Apple cider vinegar has more nutritional value because of the added bonus of fruit in it.
Blanching of fruits and vegetables is done before...
✅Explanation: Blanching is a process of briefly immersing fruits and vegetables in boiling water followed by rapid cooling in ice water. This is done before canning to:Inactivate Enzymes: Blanching halts enzyme activity that would otherwise lead to loss of flavor, color, and texture during storage.Reduce Microbial Load: The brief heat treatment helps to reduce the number of microorganisms on the surface of the produce.Preserve Color and Flavor: Blanching can help to preserve the bright color and fresh flavor of fruits and vegetables.Soften Tissues: For some vegetables, blanching can help to soften them slightly, making them easier to pack into jars.🛑Additional Information:: Blanching is a heat-moist type of cooking method that is done prior to freezing or canning. Firstly the fruits & vegetables are kept in boiling water for some time, then they are passed through the cold running water (shock treatment) to halt the cooking process. It helps to reduce the loss of nutrient quality over time. Most commonly blanched foods are Spinach, Beans & Broccol The main purposes of blanching are: To inactivate the enzymes like lipoxygenase, polyphenol oxidase, polygalacturonase, and chlorophyllase that cause loss of flavour, texture and colour of the food. To softens vegetables and makes them easier to pack. To destroy microorganisms on the surface of the vegetables and help to retard loss of vitamins. To remove the trapped air in the plant tissues before canning. Different foods require different time duration & temperatures for blanching. Over blanching of food may result in loss of nutrients and aroma.
Pusa Meghdoot is an important variety of...
✅Explanation: Pusa Meghdoot is a popular and high-yielding F1 hybrid variety of bottle gourd (Lagenaria siceraria). It was developed by the Indian Agricultural Research Institute (IARI), New Delhi. This variety is known for its long, light green, and attractive fruits, suitable for cultivation in the spring-summer season.
During the British era, King Hyder Ali established the popular 'Lal Bagh' garden in...
✅Explanation: Lalbagh Botanical Garden, also known as Lal Bagh, is a renowned botanical garden located in Bengaluru, India. It was commissioned by Hyder Ali in 1760 but completed by his son Tipu Sultan. The garden is known for its diverse collection of flora, including rare and exotic species. It also houses a glasshouse, a lake, and several historical monuments.
Dogridge is used as a rootstock for...
✅Explanation: Dogridge is a popular rootstock variety for grapes, particularly for wine grapes. It is known for its vigor, drought tolerance, and resistance to phylloxera, a devastating pest that attacks grapevine roots. Dogridge is also used for table grape varieties to improve their growth and yield.Why Other Options Are Incorrect:b) Guava: Guava is typically propagated through seeds or cuttings,.c) Sapota: Sapota is also propagated through seeds or vegetative methods like air layering.d) Mango: Mango rootstocks are typically selected from mango varieties themselves, like Kensington Pride or Turpentine.🛑Additional Information:: Dogridge Rootstock in Grapes:Popular in: Maharashtra, Andhra Pradesh, and Northern Karnataka.Helps mitigate: Salinity, drought, and nematode problems in the soil.Provides: Excellent nutritional support to the grafted scion. Yield and Growth:Rootstock gardens take 6-8 months longer to start yielding compared to own-rooted gardens due to grafting delay.Own-rooted gardens yield in about 1.5 years, while rootstock gardens require additional time for grafting. Costs:Additional costs: Rs. 6,000/acre for nursery plants and grafting charges.Includes costs like trench digging, fertilizers, training structures, drip systems, and plant protection chemicals. Benefits of Rootstock Gardens:Increased yield: 20-25% more yield per acre compared to own-rooted gardens.Improved quality: Better produce quality, especially for European markets and raisin production.Higher recovery: 60-70% recovery in rootstock gardens vs. 40% in own-rooted gardens for fresh grapes.20% more recovery in raisin production. Drought Resilience:Key role: Played an important role in Maharashtra and Karnataka during drought conditions due to the failure of monsoons.
Bridges are a special feature of ......... garden
✅Explanation: Bridges are a special feature of Japanese gardens. They are often incorporated to symbolize the journey between different realms or to enhance the aesthetic appeal of water features like ponds or streams. The design of these bridges is typically minimalistic and harmonious with the natural elements of the garden.📌Other Options Explanations:(a) English: English gardens may include pathways.(b) Persian: Persian gardens focus more on symmetry, water channels, and plantings.(d) Mughal: Mughal gardens are known for their elaborate water features.
Shalimar Garden is located in the city of...
✅Explanation: The Shalimar Bagh, also known as Shalimar Garden, is a Mughal garden located in Srinagar, the summer capital of Jammu and Kashmir in India. It is situated on the right bank of Dal Lake and is considered one of the most beautiful Mughal gardens in the region. The garden was built by Mughal Emperor Jahangir for his wife Nur Jahan in 1619.🔑Key Points 1. Shalimar Bagh is a Mughal garden in Srinagar, Jammu, and Kashmir, India, linked through a channel to the northeast of Dal Lake. 2. It is also known as Shalimar Gardens, Farah Baksh, and Faiz Baksh.3. The other famous shoreline garden in the vicinity is Nishat Bagh, 'The Garden of Delight'. 4. The Bagh was built by Mughal Emperor Jahangir, for his wife Nur Jahan, in 1619. 5. The Bagh is considered the high point of Mughal horticulture. 6. It is now a public park and also referred to as the "Crown of Srinagar".
Kochia is a...
✅Explanation: Kochia (Kochia scoparia) is a zaid season annual, typically grown in the summer months, between the rabi and kharif seasons. It is known for its ornamental value and is often used in landscaping. Kochia is drought-resistant and can grow in various soil types, making it suitable for cultivation during the warmer, dry periods of the year.🔑Key Points  A crop is a plant that is cultivated or grown on a large scale. In general, crops are grown so they can be commercially traded. In other words, a crop is any plant that is grown and harvested extensively for for-profit purposes. Types of Cropso Two major types of crops grow in India. Namely, Kharif and Rabi. Let us take a look at these.o Kharif Crops The word Kharif is Arabic for autumn since the season coincides with the beginning of autumn or winter. As cultivation of these crops happens in the monsoon season, another name for Kharif crop is monsoon crop. The Kharif season differs in every state of the country but is generally from June to September. We sow the crop at the beginning of the monsoon season around June and harvest by September or October. Rice, maize, bajra, ragi, soybean, groundnut, cotton are all Kharif crops.o Rabi Crops The Arabic translation of the word Rabi is spring.  As these crops harvest in the springtime hence the name. The Rabi season usually starts in November and lasts up to March or April. Cultivation of Rabi crop is mainly through irrigation since monsoons are already over by November. In fact, unseasonal showers in November or December can ruin the crop. Farmers sow the seeds at the beginning of autumn, which results in a spring harvest. Wheat, barley, mustard, and green peas are some of the major rabi crops that grow in India.o Zaid Crops In between the rabi and the Kharif seasons, there is a short season during the summer months known as the Zaid season. Some of the crops produced during zaid are watermelon, muskmelon, cucumber, vegetables, and fodder crops. Sugarcane takes almost a year to grow. There is a short season between Kharif and Rabi season from March to July. In general, Zaid crops are crops that grow in this season. Also, these grow on irrigated lands. So we do not have to wait for monsoons to grow them.
The fruit which contains the maximum vitamin C is...
✅Explanation: Barbados cherry, also known as acerola cherry (Malpighia emarginata) or West Indian cherry, belongs to Malpighiaceae family, contains the highest amount of vitamin C among the listed fruits. It boasts an impressive 1677 mg of vitamin C per 100 grams, making it a nutritional powerhouse.📌Other Options Explanations:c) Aonla (Indian Gooseberry): Aonla is also a rich source of vitamin C, with about 600-800mg per 100 grams.
The most popular method of propagation of phalsa plant is...
✅Explanation: The most popular method of propagation for the Phalsa plant (Grewia asiatica) is cuttings. This method is widely used because it produces plants that are genetically identical to the parent plant, ensuring consistent fruiting characteristics.
In North India, grapes are pruned in the month of...
✅Explanation: Pruning is normally done only once in North India during January- February by heading back half of the mature shoots for fruiting and the balance half are pruned for renewal spurs, which develop into fruiting canes in the next year.🛑Additional Information::Pruning : Removal of any vegetative part in a grapevine.Importance: Pruning is a critical operation in grape cultivation.Main Objectives of Pruning:Increase productivity: Ensures better fruit yield.Facilitate intercultural operations: Easier management of the vineyard.Maintain desired vine shape: Helps in shaping the vine for better growth and fruiting.Ensure vitality of the vine: Promotes continuous and healthy productivity.