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Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants Quiz 9 (60 MCQs)

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1. Which one of the following fruit is parthenocarpic
2. What is the process called when male and female gametes meet and combine to produce offspring.
3. Amorphophallus and ..... shows symbiotic association
4. A plant with single ovule in the ovary is seen in .....
5. Which process is nature cloning itself?
6. The carpel or pistil is made of the
7. The method of embryo sac formation in flowering plants is termed as
8. In entomophily, flowers are
9. In a typical seed, the portion of the embryonal axis above the level of cotyledons is called .....
10. Birds, humans and other small animals are the main agents of pollination.
11. What triggers the synthesis of enzymes capable of digesting food reserves in seeds?
12. Name 2 nuclei in an embryo sac that involved in fertilisation with male gametes?
13. In angiosperms various stages of reductional division can best be studied in
14. Polyembryony was discovered by:
15. What is the function of a pollen tube?
16. The innermost wall layer of microsporangium is the ..... which nourishes the developing pollen grains.
17. The functional megaspore develops into:
18. Identify those that are associated with the gynoecium
19. The fusion of gametes is called
20. In geitonogamy pollen grains are transferred to
21. In which of the following plants show epihydrophily type of pollination?
22. Pollens have two prominant walls which are ..... A ..... and ..... B ..... Here A and B refers to
23. Refer to the given statements. (i) Both wind and water pollinated flowers are not verycolourful and do not produce nectar. (ii) Entomophilous flowers are large, colourful, fragrantand rich in nectar. (iii) Kigelia pinnata is an insect pollinated flower. Which of the above statements is/are incorrect?
24. How many cells does a pollen grain have when it is matured?
25. Coconut endosperm is:
26. I have long and feathery stigma that sticks out of the flower. How am I likely to be pollinated by?
27. Choose the option that gives the correct number of pollen grains that will formed after 325 microspore mother cells under go microsporogenesis.
28. Pollination carried out through water is
29. During the process of fertilization, the pollen tube usually enters the embryo sac through
30. Double fertilization was discovered by Nawaschin and Guignard in
31. Ovule found in 82% of angiosperm families is
32. Wind-pollinated flowers have stamens found within the flower.
33. Characters of wind pollinated pollen are with
34. The ubisch bodies are produced in the
35. A particular of plant produces light, non sticky pollen in large numbers and its stigmas are long and feathery. These modifications facilitate pollination by
36. Which of the following plant produces false fruits?
37. The four walls of a microsporangium in correct order from outside to inside are
38. Outermost covering of ovule
39. Bisexual chasmogamous flowers shows
40. Which is the female reproductive system in a flower?
41. What is the term for the process of artificial hybridization?
42. A dioecious flowering plant prevents
43. Parthenocarpic fruits develop in .....
44. One of the 3 haploid cells at the other end of the embryo sac will become the egg cell. The other two haploid cells are the .....
45. Microsporangium develops into
46. The pollen grains represent the
47. Plants with ovaries having only one or a few ovules aregenerally pollinated by
48. The filament .....
49. Spiny or sticky pollen grains and large, attractivelycoloured flowers are associated with
50. Number of cells in the mature ovule/embryo sac
51. Assertion:Artificial hybridisation requires emasculation in bisexual flower.Reason:Emasculation is removal another before their dehiscence so it prevent self pollination.
52. Male gametes are found in ..... and produced in the anthers of the flower. Female gametes are found in ..... and produced in the ovary of the flower.
53. This connects Ovary with stigma
54. In a majority of aquatic plants such as water hyacinth and water lily, the flowers are pollinated by
55. Pollen viability for rice and wheat plant is
56. All plants reproduce by flowers.
57. Transfer of pollen from the anther of one flower to the stigma of another flower on the same plant.
58. Which among the following statements are true for sexual reproduction in flowering plants?(i) It requires two types of gametes.(ii) Fertilization is a compulsory event.(iii) It always results in formation of zygote.(iv) Offspring formed are clones.
59. What would be the ploidy of the cells of tetrad
60. The cells of the endosperm are filled with reserve food materials and are used for the nutrition of developing embryo is generally a ..... in angiosperms.
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