Agriculture Biology — Agri Master Mind
Change in one or few chromosomes of a genome is referred as
- Aneuploidy
- Euploidy
- Polyploidy
- None of these
- Both a and b
The most easy and commonly used method of breeding in unexploited fruit crop is:
- Clonal selection
- Mutation breeding
- Hybridization
- Polyploidy breeding
- All of these
Polyploidy in plants is induced through:
- Irradiation
- Mutagenic chemicals
- Ethylene
- Colchicines
- Gametocides
A condition in which F1 plants of an interspecific cross are vigorous and fertile but their F2 progency is weak and sterile is called (Plant Breeding and Genetics Series)
- Hybrid vigour
- Hybrid sterility
- Hybrid breakdown
- Hybrid invailability
- All of these
Hybrid vigour is mostly due to:
- Mixing of cytoplasm of male with that of female
- Superiority of all the genes
- Homozygocity of pure characters
- Hyperzygocity
- All of these
Which phase is known as DNA synthesis phase
- G1 phase
- G2 phase
- M phase
- S phase
- None of these
The number of ATP that forms during the creb’s cycle or respiration?
- 8
- 15
- 22
- 30
- 39
Microporse contained within the anther gives rise to
- Callus culture and gynogenesis
- Anthogenesis and callus culture
- Gynogenesis and androgensis
- None
- Both c and b
The pre cursor of ethylene is
- ABA
- IAA
- Methionine
- Traptophane
- NAA
_________ hormons is naturally present in coconut milk, responsible for cell division and has an important role in tissue culture.
- Cytokinin
- Ethylene
- gibberelin
- Auxin
- Abscisic acid
Plant regenerated by tissue culture express which type of variation?
- Clonal
- External
- Gametic
- Somaclonal
- All of these
Which hormone is involved in conversion of Glycogen to Glucose?
- Insulin
- Progestron
- Testosterone
- Glucagon
- None of these
In cytoplasmic organelles which is the component that is the seat of protein synthesis, respiration and generation of high power of ATP?
- Plastid
- Centrosome
- Golgi complex
- Mitochondria
- Both a and b
Which one is the smallest RNA?
- m RNA
- t RNA
- r RNA
- c RNA
- All of these
Emerson effect are associated with__
- Plant Growth
- Seed rate
- Photosynthesis
- Transpiration and Osmosis
- None of these
In geminating seed, which vitamin is found in larger amounts?
- A
- B
- C
- D
- E
In 70s size they are madeup of combination of……
- 60s and 40s
- 50s and 30s
- 30s and 40s
- 60s and 30s
- A and d
Supplemementary gene action is 9:3:4 then polymeric gene action are…
- 9:6:1
- 1:4:6:4:1
- 9:3:4
- 12:3:1
- None of these
Which of the following type of aneuploids having one extra chromosome in diploid set of chromosome
- Double monosomic
- nullisomic
- Tetrasomic
- Monosomic
- Trisomic
Pollen grains from flowers of one plant fall on the receptive stigma of other follower of the same plant is known as
- Allogamy
- Autogamy
- Geitonogamy
- Cleistogamy
- Chasmogamy
Transportation is a necessary evil. How much ______% of water lost of total water loss by stomatal transpiration
- 98-99
- 95-97
- 80-90
- Up to 20
- None of these
Which of the following is a important cytological tools for mapping of genes
- Duplication
- Deletion
- Replication
- Transcription
- None of these
Which of the following option true for the C-4 plant
- Kranz anatomy
- Hatch and slack cycle
- Co2 acceptor acid
- Malic acid
- All of these
which of the following molecule is link between glycolysis and krebs cycle
- Pyruvic acid
- NADPH2
- Acetyle Co – A
- NADH
- All of these
Which of the following is called as suicidal bags?
- Centrosome
- Lysosome
- Peroxisome
- Mitochondria
- Both c and d
Stroma is the ground material of which of these----
- Ribosomes
- Lysosomes
- Mitochondria
- Chloroplasts
- None of these
Which of the following pairs is incorrect?
- Bread wheat – allohexalpoid
- Water melon – triploid
- Rye – autotetraploids
- Cotton – allotetraploid
- None of these
Which method is used for the genetic improvement of self pollinated crop plants.
- Clonal selection
- Backcross method
- Bulk breeding method
- Recurrent selection
- None of these
National seed act passed in which year
- 1968
- 1966
- 1963
- 1969
- 1970
Kranz anatomy is found in the leaves of ----
- Cotton
- Potato
- Wheat
- Sugarcane
- All of these
Where does the light reaction takes place?
- Stroma
- Grane
- Cytoplasm
- Endoplasmic reticulum
- None of these
If gamete is fertile but seed are not produce due to
- Male sterility
- Self incompatibility
- Parthenocarpy
- Apomixes
- None of these
Nucleolus and nuclear membrane reappear in which phases of cell division
- Prophase
- Metaphase
- Anaphase
- Telophase
- Cytokinesis
Crossing over takes place during which stage of the cell division
- Pachytene
- Leptotene
- Zygotene
- Diplotene
- None of these
Which is the correct sequence in cell cycle.
- S-G1-G2-M
- S-M-G1-G2
- G1-s-G2-M
- M-G1-G2-S
- None of these
When physical purity of foundation seed is 98% permissible tell me it is genetically………………. Pure.
- 95%
- 99.9%
- 100%
- 90%
- 85%
Which of the following nutrient envoled in the biosynthesis of IAA plant growth regulator.
- Mo
- Mn
- Mg
- Zn
- Si
Jagannath variety of rice, is a semi dwarf mutant from the tall cultivar T-141 which is _________ induced mutant
- Alfa rays induced mutant
- Beta rays induced mutant
- Gamma rays induced mutant
- x-rays induced mutant
- UV rays induced mutant
The losse of water in the form of vapour from the living aerial parts of the plants of the is termed as transpiration. Which of the following is not a type of transpiration:-
- Foliar
- Stomatal
- Cuticular
- Lenticular
- None of these
Serine & glycin (Amino acid) are useful for protein synthesis which is produced in:-
- Calvin cycle
- Hatch & slack cycle
- Photo respiration
- Respiration
- Both A & B
Choose the correct (Chromosome number)
- Honey bee -34
- Roundworm -4
- Fruit fly – 8
- Horse -2
- All of these
A complete set of chromosomes of a diploid species is known as, if adaptation of introduced variety to the new environment is known as Acclimation
- Haploid
- Gene pool
- Diploid
- Genome
- Triploid
Cell division in which one cell gives rise to two cells of genetically identical to the cell which produced theme, term meiosis given by
- Flemming
- Strasburger
- Former and moore
- Porter
- None of these
Choose the right sub stages sequence of first prophase of meiosis cell division
- Laptotene – pachytene – zygotene – diplotene – diakinensis
- Diakinensis – pachytene – diplotene – zygotene – Laptotene
- Laptotene – zygotene – pachytene – diakinensis - diplotene
- Laptotene – zygotene – pachytene – diplotene - diakinensis
- Laptotene – diakinensis – diplotene – pachytene - zygotene
Choose the incorrect option contibutation of plant breeders
- Thomas Fairchild – first intra – specific hybrid
- Rimpu – triticale
- Donald – crop ideotype
- Nagaharu – U’s triangle
- All are currect
Term protein was coined by Moulder and term enzyme and vitamin was coined by respectively
- Fisher, kutins
- Funk, kuhne
- Stephen hales, shelford
- Kutins, funk
- None of these
Photosynthesis rate is highest in C4 plant and photorespiration rate hightest C3 plant so tell me highest water use efficiency order of C3, C4, and CAM pland
- CAM<C4<C3
- C4>C3>CAM
- CAM>C4>C3
- C3>C4>CAM
- None of these
The response of insects to environmental rhythms of light and darkness is known as:
- Phototropic
- Photropism
- Photoperiodism
- Thermotropism
- All of these
Dry fruits like cashewnut and almonds are the rich sources of?
- Vitamin B
- Potassium
- Fats
- Carbohydrates
- Minerals
In aerobic respiration, complete oxidation of pyruvate occurs through which process?
- Calvin cycle
- Hatch & slack cycle
- TCA cycle
- Glycolysis
- Pentose Phosphate pathway
Respiratory quotient is the ratio of the volume of Co2 released to the volume of o2 absorbed in the respiration. What is the R.Q. value of organic acid….?
- 0.7
- 0.8
- 0
- 0.5
- 1.33
The example of C3 plant is….
- Sugarcane
- Maize
- Barley
- None the them
- All of these
Which of the following plant does not show photorespiration
- Pea
- Rice
- Maize
- Wheat
- Redgram
Which of the following is associated with opening and closing of stomata:
- Sunlight
- Water pressure
- Temperature
- Wind
- None of these
Orientation of leaves and parts of the plant towards sunlight is called________
- Photoperiodism
- Phototropism
- Long day plant
- Short day plant
- None of these
For all the seven characters in garden pea Mendal always observed
- Complete dominance
- Codominance
- In complete dominance
- Over dominant
- All of these
The one gene one4 enzyme hypothesis was given by
- T.H Morgan
- Bateson and Punnett
- Badle and Tatum
- De vries
- All of these
The breeding method generally used to improve specific character of well adopted variety is?
- Pure line
- Pedigree method
- Backcross method
- Bulk method
- All of these
Any measurable or distinctive characteristic or trait possessed by an organism is called as………..
- Phenotype
- Genotype
- Both Phenotype and Genotype
- None of these
- None of these
Haploid plants can be produced by culturing?
- Anthers
- Endosperm
- Single cell
- Meristem
- Nucellus