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Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 1 (60 MCQs)

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1. In which of the following the endosperm persists in the mature seed?
2. What is the primary purpose of a flower?
3. Embryo develops from
4. Assertion:Polyembryony is found in all angiosperm. Reason:All angiosperm are produced by apomixis
5. What is the function of the filiform apparatus?
6. Flowers are considered as objects of
7. The female gametophyte of a typical dicot at the time offertilisation is
8. An embryo may sometimes develop from any cell of embryo sac other than egg. It is termed as
9. Attractans and rewards are required for
10. How many Pollen grains will be formed after meiotic division in 10 microspore mother cells
11. What is sporophyte generation?
12. The phenomenon observed in some plants wherein parts of the sexual apparatus is used for forming embryos without fertilization is called-
13. While planning for an artificial hybridisation programme involving dioecious plants, which of the following steps would not be relevant?
14. What does double fertilization refer to in flowering plants?
15. Male and female flowers are present on different plants (dioecious) to ensure xenogamy, in
16. In majority of angiosperms
17. Insect-pollinated flowers have scented fragrance.
18. Section D-One-word answers (convert to MCQ):Select the correct one-word term for the agent of insect pollination.
19. Pollination in flowering plants
20. Point out the odd one
21. After fertilization, polar nucleus in the embryo sac (with Second male gamete) transformed into
22. Transfer of pollen grains from anther to the stigma of a different plant is known as
23. Type of pollination that produces the greatest variation in characteristics
24. Which of these statements about seed dormancy are TRUE?1. Seeds do not respire during dormancy2. Seeds lose a lot of water before dormancy3. Seeds have low metabolic rate during dormancy.4. Seeds have no metabolic activity during dormancy.
25. What are the devices that discourage self pollination or increase cross pollination
26. The yellow, powdery stuff on the stamens
27. Recent research has shown that pollination requires that carpels recognize pollen grains are "self or non self" . For self incompatibility the system requires:
28. Persistent nucellus is called as ..... and is found in .....
29. Seed dispersal does not reduce competition between the seedlings and the parent plant for
30. Cleistogamous flowers produce assured seed-set even in the absence of pollinators.
31. The pistil consists of a sticky part where pollen grains land.
32. The sporopollenin is non-degradable because
33. Entry of pollen tube into the embryo sac is under ..... guidance.
34. Triple fusion in Capsella bursa pastoris is fusion of malegamete with
35. A pollen mother cell undergoes how many divisions to form a mature gametophyte?
36. Main function of the tapetum is to
37. ..... is a genetic mechanism and prevents self-pollen from fertilising the ovules by inhibiting pollen germination of pollen tube growth in the pistil.
38. In over what precent pollen grains are shed at 2 cell stage in angiosperms?
39. Which of the following is NOT a part of the stamen?
40. When the pollen grain lands on the stigma and starts to grow, the first action is that
41. Feathery stigma occurs in
42. Egg apparatus is situated at
43. Pollen viability is maximum in:
44. Thalamus contributes in the fruit formation in
45. When micropyle, chalaza and hilum lie in a straight line, the ovule is said to be
46. Fruits that are developed without fertilization are called
47. Which of the following is incompatible pollen grain for a self incompatible species of flower?
48. The process of formation of seeds without fertilization in flowering plants is known asBudding Apomixis Sporulation Somatic hybridization
49. In angiosperms, fertilization is:
50. Stalk of the inflorescence
51. Insect-pollinated flowers show:
52. What is the primary function of the endosperm in seeds?
53. Process in sexual reproduction in which male and female reproductive cells join to form a new cell
54. A typical angiosperm embryo sac, at maturity shows
55. White kernel of coconut is an example of which type of endosperm?
56. The functions of germ pore is/are
57. How many haploid cells are present in a mature female gametophyte of a flowering plant?
58. Section D-One-word answers (convert to MCQ):Select the correct one-word term for the protective covering of a seed.
59. Multicarpellary syncarpous ovary is found in
60. Which of the following represents the female gametophyte in angiosperms?
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