391. Which one of the following is the most suitable medium for culture of Drosophila melanogaster?

A Agar agar
B Ripe banana
C Cow dung
D Moist bread
Answer :   Ripe banana
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392. The aquatic Fern, which is an excellent biofertilizer is

A Salvinia
B Azolla pinnate
C Pteridium
D Marsilea
Answer :   Azolla pinnate
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393. Pisciculture is rearing and production of

A Fishes
B Birds
C Reptiles
D Wool yielding animals
Answer :   Fishes
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394. "Sporeine" is used to control

A Bacterial pathogen
B Fungal pathogen
C Nematodes
D Insects pest
Answer :   Insects pest
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395. Hemp fibres belong to

A Linum
B Cannabis sativus
C Corchorus
D Hibiscus
Answer :   Cannabis sativus
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396. Major foreign exchange earner for India is

A Tea
B Coffee
C Rice
D Wheat
Answer :   Tea
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397. Why crossing with wild relatives is beneficial /because it helps in the transfer of gene of

A Disease resistance
B Pest resistance
C Drought resistance
D Carbamates
Answer :   Carbamates
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398. The pesticide used as preventive measure in buildingis

A Aldrin
B Dieldrin
C BHU
D DDT
Answer :   Aldrin
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399. Which state of India is the largest producer of groundnut

A West Bengal
B Uttar Pradesh
C Gujrat
D Madhya Pradesh
Answer :   Gujrat
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400. Breeding of crops with high levels of minerals, vitamins and proteins is called

A Somatic hybridisation
B Biofortification
C Biomagnification
D Micropropagation
Answer :   Biofortification
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