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Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 5 (60 MCQs)

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1. The entry of pollen tube into the ovule through micropyle is:
2. The endosperm is completely consumed by the developing embryo in .....
3. What is the function of filiform apparatus in an angiospermic embryo sac?
4. When the pollen grains is mature it contains two cells, the vegetative cell and generative cell. The vegetative cell a.) is biggerb.) spindle shaped c.)has abundant food reserved.) has larger irregularly shaped nucleus
5. What will happen if the stigma of a flower is cut?
6. Section D-One-word answers (convert to MCQ):Select the correct one-word term for the nourishing tissue in seeds like cereals.
7. Which of the following is a monocarpellary, unilocular ovary with marginal placentation?
8. One of the most resistant biological material present in the exine of pollen grain is
9. Embryo sac is located inside the
10. Pollen tube is produced by
11. Binary fission in bacteria
12. Triploid nuclei will develop into ..... to supply nutrients for the growth of embryo.
13. The reproductive part of a flowering plant is
14. Which one of the following generates new genetic combinations leading to variation?
15. Name the process in which the fruit falls to the ground when it's ripe, the seeds go into the soil and a new plant begins to grow.
16. Section C-True or False:Apomixis leads to formation of seeds without fertilization. Choose True or False.
17. Megaspore mother cell ..... 1$\rightarrow$ Megaspore ..... 2$\rightarrow$ embryo sac ..... 3$\rightarrow$ egg
18. Out of megaspore tetrad, the functional megaspore is
19. In the false fruit strawberry, the accessory contributing part of the flower is .....
20. Polyembryony commonly occurs in
21. A dithecous anther is made up of ..... number of theca.
22. What are the male reproductive parts of a flower collectively called?
23. Anther is generally:
24. Pollen grains contains ..... gametes.
25. How else can pollen be moved besides pollinators?
26. In water hyacinth vegetative propagation occurs through?
27. Which of the following describes parthenocarpy?
28. The flowers that require synchrony in pollen release and stigma receptivity are
29. Perisperm is found in the seeds of
30. How many male gamete are formed in one pollen grain?
31. In angiosperms, the ..... tissue produced by mitotic division of the endosperm, are filled with reserve food materials and are used for the nutrition of developing embryo.
32. The cells of microspore tetrad are .....
33. The outermost wall layer of microsporangium in anther is
34. The layer in the wall of the microsporangia that helps to nourish pollen grains is
35. In embryo sac the number of-synergid-egg cell-central cell-antipodal cell follows the order
36. What is the process involved to form a haploid microspore?
37. Sticky stigma to attach to insect's body
38. Continuous self pollination leads to
39. A typical angiosperm anther is ..... with each lobe having two theca.
40. Which structure is responsible for the development of female gametophytes?
41. Mature ovules are classified on the basis of funiculus. Ifmicropyle comes to lie close to the funiculus the ovule is termed as
42. If an endosperm cell of an angiosperm contains 24 chromosomes, the number of chromosomes in each cell of the root will be
43. Offspring are genetically identical to the parent
44. Embryo sac is also called
45. Where in the flowering plants male gametes are present?
46. What does the ovary of a flower contain?
47. In (I) condition, both male and female flowers are borne on same plant; an example of such plants is (ii) . (I) (II)
48. Male and female flowers are present on different plants(dioecious)to ensure xenogamy, in
49. Which of the following is NOT a type of endosperm?
50. What would be the chromosome number in the cell of (a) radicle, (b) hypocotyl, (c) epiblast, (d) aleurone layer and (e) scutellum in Zea mays if its root cell has 20 chromosome number?
51. Pollination can occur between flowers of the different plants of the same species.
52. 60% of the angiosperms shed their pollens at the
53. A typical dicot embryo has:
54. Which part of the male plant produces the pollen?
55. Which of the following plant seeds were discovered in viable condition during the archeological excavation at King Herod's palace near the Dead Sea?
56. Insect-pollinated flowers have small and dull-coloured petals.
57. Which of the following are the characteristics of a typical angiospermic anther?Bilobed, monothecous, dithecous, tetragonal, tetrasporangiate, monolobed.
58. Which of the following is a characteristic of cleistogamy?
59. What is gametophyte generation?
60. For the discharge of both male gametes, pollen tube enter into embryosac through the
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