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Question Bank No: 1

1. A transgenic food crop which may help in solving the problem of night-blindness in developing countries is

2. 'Himgiri' developed by hybridisation and selection for disease resistence against rust pathogens is a variety of

3. Mutations can be induced with

4. The entire collections of plants/seeds having all diverse alleles for all the genes of a crop is called

5. 'Jaya' and 'Ratna' developed for green revolution in India are the varieties of

6. Crosses between two plants of the same variety are called

7. Which one of the following is linked to the discovery of Bordeaux mixture as a popular fungicide?

a)		Black rust of wheat
b)		Bacterial leaf blight of rice
c)		Downy mildew of grapes
d)		Loose smut of wheat

8. Desired crops is the method of mass-selection applied?

9. In which crops is the method of mass-selection applied?

a)		Cross-Pollinated
b)		Self-Pollinated
c)		Both self and cross-Pollinated
d)		Potato and Sugarcane

10. Main objective of production of herbicide resistant genetically modified crops is to

a)		Reduce herbicide accumulation in food articles
b)		Eliminate weeds from the field without manual labour
c)		Eliminate weeds from the field without use of herbicides
d)		Encourage eco-friendly herbicides

11. Hybrid vigour is mostly due to

a)		Homozygosity of pure characters
b)		Superiority of all the genes
c)		Heterozygosity
d)		Mixing up of cytoplasm of the male with that of female

12. Which one of the following pair is incorrectly matched in respect to the crop varieties for disease resisitance?

a)		Cowpea - Bacterial Blight
b)		Brassica - White rust
c)		Wheat - Leaf and Stripe rust
d)		Cauli flower - Tobacco mosaic virus and leaf curl

13. In tissue culture, embryoids formed from pollen grains is due to

14. Selection of homozygous plant is

15. Norman Borlaug, the ' Father of Green Revolution' has developed a highly recognized and appreciated cultivated variety of