Page 37 - Biology - XII

(c) It is customary to keep bee hives to keep animals away from grazing.
(d) Bee hives add to the beauty of the fi eld.

Q22. Bird pollinated fl owers are
(a) Bombax (b) Erythrina (c) Bignonia (d) (a), (b), and (c)

Q23. Anemophilous fl ower does not show this feature
(a) brightly coloured (b) inconspicuous fl owers
(c) non-scented (d) fl owers are not attractive.

Q24. Vallisneria is pollinated by
(a) insect (b) wind (c) water (d) all of these
Q25. Signifi cance of pollination process is

(a) fertilisation (b) production of seeds
(c) production of fruits (d) all of these

Q26. Self-pollination is also called
(a) allogamy (b) autogamy (c) xenogamy (d) none of these
Q27. The process of transfer of pollen grains from anther to stigma occurs by

(a) air (b) wind (c) water (d) all of these
Q28. Pollination by bat is called

(a) omithophily (b) entomophily (c) hydrophily (d) chiropterophily
Q29. Identify the fl ower from this bouquet that is not pollinated by insects.
(a) Jasmine (b) Salvia (c) Snapdragon (d) Coconut fl owers

Answer key
1. (d), 2. (d), 3. (a), 4. (c), 5. (b), 6. (a), 7. (b), 8. (b), 9. (d), 10. (c), 11. (a), 12. (a), 13. (c), 14. (c),
15. (b), 16. (d), 17. (d), 18. (a), 19. (d), 20. (d), 21. (b), 22. (d), 23. (a), 24. (c), 25. (d), 26. (b),
27. (d), 28. (d), 29. (d)

Assertion-Reason Type Questions

These consist of two statements—Assertion (A) and Reason (R). Answer these questions by selecting
the appropriate option given below:

a. Both A and R are true and R is the correct explanation of A.
b. Both A and R are true, but R is not the correct explanation of A.
c. A is true, but R is false.
d. A is false, but R is true.

1. Assertion (A) : Insects visit fl owers to gather honey.
Reason (R) : Attraction of fl owers prevents the insects from damaging the parts.
Answer key

1. (c)

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