Plant Pathology 03 — Agri Master Mind

Mango malformation was first recognized in india from-
  • Uttar Pradesh
  • Rajasthan
  • Bihar (Darbanga)
  • Andhra Pradesh
Leaf blight of cumin is caused by -
  • Glomerella cingulata
  • Cercosporapersonata
  • Alternaria solani
  • Alternaria burnsii
Uncinula necator is a causal organism of grapevine-
  • Downy mildew
  • Powdery mildew
  • Anthracnose
  • Greymold
Spray of NAA is found effective to manage which disease of Mango
  • Powdery mildew
  • Sooty mold
  • Die-back
  • Mango malformation.
Fungus, Pyricularia (Magnoporthe) grisea causes the disease-
  • Leaf blight of rice
  • Blast of rice
  • Shealth blight of rice
  • Blast of bajra
In which of the following diseases Kreshek phase is occurred -(vvi)
  • Root rot of cotton
  • Bacteria blight of cotton
  • Wilt of castor
  • Bacterial leaf blight of rice
In which rust of wheat, lemon yellow pustules are arranged in end to end manner in rows –
  • Yellow rust
  • Brown rust
  • Black rust
  • None of the above
An example of Heteroecious rust is-
  • White rust of mustard
  • Black rust of wheat
  • Linseed rust
  • Pea rust
Which of the following is a non-systemic fungicide-
  • Vitavax
  • Dithane M-45
  • Ridomil MZ-72
  • Plantvax
Glomerella tucumanensis is a perfect stage of
  • Rhizoctonia solani
  • Aspergillus niger
  • Colletotrichum falcatum
  • Drechslera oryzae
Hill bunt of wheat is caused by-
  • Tilletia tritici
  • Ustilago tritici
  • Ustilago maydis
  • Tilletia indica
Mungbean Yellow Mosaic India Virus (MYMIV) is transme by
  • Aphids
  • White fly
  • Seeds
  • Leafhoppers
Sesame phyllody is caused by- (vvi)
  • Bacteria
  • Fungi
  • Phytoplasma
  • Virus
Collar rot of groundnut is caused by -
  • Aspergillus niger
  • Aspergillus reticulata
  • Aspergillus flavus
  • Rhizoctonia solani
Bunchy top disease of Banana is caused by-
  • Phytoplasma
  • Bacteria
  • Virus
  • Fungi
Appearance of 'Witches broom' on mango trees is a common symptom of-
  • Anthracnose
  • Mango malformation
  • Black tip
  • Powdery mildew
Colletotrichum circinans is a casual agent of-
  • Anthracnose of chilli
  • Anthracnose of guava
  • Smudge of onion
  • Anthracnose of grapes
Which of the following is not a protectant fungicide?
  • Thiram
  • Captan
  • Chloranil
  • Agroson G.N
The process of bacterial transformation was discovered by -
  • Zinder and Lederberg
  • Waksman
  • Griffith
  • Laderberg and tatum
Use of agar-agar for microbiological studies was suggested by
  • Anton de bary
  • T.J. Burril
  • Robert Koch
  • paul Enrich
Biological nature of nitrification was established by -
  • Hiltner
  • Louis Pasteur
  • Winogradsky
  • None of the above
Which one of the following is a Bacterium ?
  • Aspergillus
  • Penicillium
  • Nitrosomonas
  • None of the above
Ooze test is done for -
  • Fungi
  • Bacteria
  • Virus
  • All of the above
The concept of 'Contagium vivum fluidum' was put forward by -
  • Iwanovsky, 1867
  • Beijerinck, 1898
  • Stanley, 1935
  • Bawden an Pirie, 1911
Mesosomes are present in -
  • Algae
  • Bacterium
  • Protozoa
  • Fungi
Dithan M-45 belongs to the fungicidal group of -
  • Monothiocarbomate
  • Dithiocarbamate
  • Manganese organic compound
  • Manganese inorganic compound
On the basis of cell wall, choose odd one -
  • Bacteria
  • Fungi
  • Algae
  • Spiroplasma
The pathogen, Plasmopara viticola is related with discovery of- (vvi)
  • Burgundy mixture
  • Cheshunt compound
  • Bordeaux mixture
  • None of these
Which one is not correctly matched -
  • Father of Mycology- P.
  • Micheli
  • Beijerinck- Coined term virus
  • Gene for gene theory- Vanderplank
Once the Pathogen is estabalished in an area, steps taken to destroy are known as -
  • Exclusion
  • Eradication
  • Protection
  • None of these.
The example of host specific phytotoxin is-
  • Fusaric acid
  • Victorin
  • Pyricularin
  • None
Crop rotation to reduce soil borne inoculums will be come under
  • Protection
  • Eradication
  • Avoidance
  • Exaclusion
DIPA was imposed in India in the year -
  • 1914
  • 1660
  • 1891
  • 1909
Little leaf of brinjal is caused by -
  • Fungus
  • Bacterium
  • Virus
  • Phytoplasma
Malaria is caused by -
  • Toxoplasma
  • Plasmodium
  • Leishmania
  • Giardia
Smut' disease in plant is caused by -
  • Bacterium
  • Fungus
  • Algae
  • Protozoa
Non-symbiotic nitrogen fixation is associated with -
  • Rhizobium
  • Penicillium
  • Azotobacter
  • Pythium
The fungus commonly used as bio-pesticide-
  • Puccinia
  • Alternaria
  • Trichoderma
  • Fusarium
The bacterium involved in 'Sulphur Cycle' is -
  • Rhizobium
  • Azotobacter
  • Thiobacillus
  • Pseudomonas
Common method of asexual reproduction in bacteria is by -
  • Fission
  • Endospores
  • Conidia
  • Cysts
Chlamydospore is produced in the genus:
  • Cercospora
  • Rhizoctonia
  • Fusarium
  • Albugo
Tumours in plants are caused by -
  • Xanthomonas
  • Pseudomonas
  • Erwinia
  • Agrobacterium
The journal 'Indian Phytopathology' was started by-
  • Mundkar
  • J.F. Dastur
  • Mehta
  • K.
Haustoria are produced by –
  • Albugo
  • Sclerotium
  • Helminthosporium
  • All of above
The fungal antagonist used in disease management is -
  • Trichoderma
  • Neurospora
  • Rhizopus
  • Mucor
Black rust of wheat is caused by -
  • Puccinia
  • Puccinia graminis tritici
  • Puccinia recondita
  • Puccinia arachis
Endospore is produced by -
  • Bacillus
  • Rhizobium
  • Clavibacter
  • Xanthomonas
Which of the following fungicide is used as seed treatment against loose smut of wheat?
  • Vitavax
  • Kavach
  • Ceresan
  • Mancozeb
One of the following insects transmits the viruses -
  • White fly
  • Pink ball worm
  • Pod borer
  • Saw fly