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The most likely reason for the developme...

The most likely reason for the development of resistance against pesticides in insect damaging crop as

A

random mutations

B

genetic recombination

C

directed mutations

D

acquired heritable changes

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SARAS PUBLICATION-MODEL QUESTION PAPER 4-EXERCISE
  1. Identify the type of ovule, where the nucellus acquires a horse - shoe...

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  2. In your opinion, which is the most effective way to conserve the plant...

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  3. The most likely reason for the development of resistance against pesti...

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  4. When a diploid female plant is crossed with a tetraploid male, the plo...

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  5. Common indicator organism of water pollution is

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  6. Which of the following plants are used as green manure in crop fields ...

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  7. Ergot of rye is caused by a species of

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  8. One genes one enzyme rela¬ tionship was established

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  9. In an annual ring, the light coloured part is brown'as

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  10. Which one of the following is a pseudocarp?

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  11. Boron in green plants assists in

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  12. Which statement about photosynthesis is false?

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  13. FAD is electron acceptor during oxidation of the following.

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  14. One set ofa plantswas grown at 12 hrs day and 12hrs night period cycle...

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  15. In which one of the following is living fossil?

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  16. Sexual reproduction in Spirogyra is an advanced feature because it sho...

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  17. Introduction of food plants developed by genetic engi neering is not d...

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  18. What are photolithotrophs?

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  19. Which aquatic fern performs nitrogen-fixation?

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  20. Adhesive pads of fungi penetrate the host with the help of

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