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Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 7 (60 MCQs)

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1. The function of filiform apparatus is to
2. Section C-True or False:Polyembryony means multiple embryos in a single seed. Choose True or False.
3. What is Pollination?Pollination is the transfer of (?) grains from (?) to (?).
4. Microspore tetrads are formed by:
5. Which of the following represents arrangement of layers from outer side to innermost layers of Microsporangum
6. All the four whorls are present ( Petals, Sepals, Stamen, Pistil)
7. The anther wall consists of four wall layers where
8. Anemophilous plants have
9. Wind-pollinated flowers have large and feathery stigmas to catch pollen grains and hang outside the flower.
10. Which parasitic plant contains thousands of tiny seeds?
11. The fusion product of polar nuclei and male gametes is
12. What is the viability period of pollen grains in rice and wheat plant?
13. The pollen grain is transferred from the anther to the .....
14. Nonessential floral organs in a flower are
15. What is the function of the micropyle in a seed?
16. Egg apparatus of an embryo sac consists of-
17. What is the tube-like structure connecting the stigma to the ovary called?
18. The portion of the emrbyonal axis above the level of cotyledons is
19. Wind-pollinated flowers usually have ..... and ..... petals.
20. The filliform apparatus is a structure in the flowering plants associated with
21. The female gametophyte of a typical dicot at the time of fertilization is:
22. The process of formation of microspores from a pollen mother cell (PMC) through meiosis is called
23. In the embryos of a typical dicot and a grass, the structures which represent the same thing are
24. The seed that contains the future plant is called the .....
25. Chorionic villi develops from .....
26. The two nuclei which are migrated from the opposite poles to the central cell are called
27. The outer three layers of anther wall perform the function of
28. Pollen grains collect on the ..... of a flower, which is often sticky or feathery.
29. Genetically self but functionally cross pollination is
30. A plant has 24 chromosomes in its microspore mother cell. The number of chromosomes in its endosperm will be
31. Autogamy stands for
32. The seed coat develops from
33. Nucellus forms which of the following part of a fruits?
34. If each microsporangium, in a typical angiospermic anther consists of 40 microspore/pollen mother cells, the number of pollen grains that can be produced from this anther will be
35. Amongst the insects the dominant biotic pollinating agents are
36. The first cell of sporophytic generation is:
37. The nucellus persist in the seeds of .....
38. First cell of the gametophytic generation is:
39. The product of fertilization is
40. Hardest substance in plant kingdom is
41. Pollen grain is surrounded by a two layered wall called .....
42. An organic compound that can withstand environmental extremes and cannot be degraded by any enzyme is:
43. What is the site of attachment of filament of anther in flower?
44. Fragrant flowers with well-developed nectaries areadaptation for
45. Number of germ pore in monocots
46. Occurrence of more than one embryo in a seed is referred to as
47. Along with the tube nucleus, how many male gametes does the Pollen tube carry
48. Section D-One-word answers (convert to MCQ):Select the correct one-word term for the fusion of male gamete with egg.
49. How many PMCs should undergo meiotic division to produce 64 pollen grains
50. Assertion:Pollen mother cells (PMCs) are the first male gametophytic cells. Reason:Each PMC gives rise to two pollens
51. Which of the following is true about double fertilization in flowering plants?
52. 60% of the angiosperms shed the pollen grains at
53. A plant has either male or female flowers, not both.
54. The portion of embryonal axis between plumule ( future shoot ) and cotyledons is called
55. In monocot, the ..... end produces the suspensor cells
56. Which one is female gametophyte?
57. What is the name used when the pollen and the ovule join together to make a seed?
58. Section C-True or False:Antipodals are present at micropylar end. Choose True or False.
59. Which of these is a condition that makes flowers invariablyautogamous?
60. Occurrence of more than one embryo is called
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