Sexual Reproduction in Flowering Plants MCQs Mock Test of Class 12th Biology

Question 1. Heterostyly as a contrivance for cross-pollination is found in

Question 2. The part of gynoecium that determines the compatible nature of pollen is

Question 3. Part of the gynoecium which receives the pollen is called

Question 4. Growth of pollen tube towards embryo sac is

Question 5. During the process of fertilisation the pollen tube of the pollen grain usually enters the embryo sac through

Question 6. Fusion of one of the male gametes with egg nucleus is referred to as

Question 7. The total number of nuclei involved in double fertilisation in angiospersm are

Question 8. Male and female flowers are present on different plants (dioecious) to ensure xenogamy, in

Question 9. Feathery stigma occurs in

Question 10. Plants with ovaries having only one or a few ovules are generally pollinated by

Question 11. Which of the following is not a water pollinated plant ?

Question 12. Spiny or sticky pollen grains and large, attractively coloured flowers are associated with

Question 13. Endospermic seeds are found in

Question 14. In albuminous seeds, food is stored in _______ and in non albuminous seeds, it is stored in _______.

Question 15. Persistent nucellus is called as _______ and is found in _______.

Question 16. What is the function of filiform apparatus in an angiospermic embryo sac?

Question 17. The female gametophyte of a typical dicot at the time of fertilisation is

Question 18. Polygonum type of embryo sac is

Question 19. Both chasmogamous and cleistogamous flowers are present in

Question 20. Even in absence of pollinating agents seed-setting is assured in

Question 21. Indentify the wrong statement regarding post-fertilisation development.

Question 22. Polyembryony commonly occurs in

Question 23. An embryo may sometimes develop from any cell of embryo sac other than egg. It is termed as

Question 24. Embryo sac is to ovule as _______ is to an anther.

Question 25. The stamens represent

Question 26. Anther is generally

Question 27. The anther wall consists of four wall layers where

Question 28. Mature ovules are classified on the basis of funiculus. If micropyle comes to lie close to the funiculus the ovule is termed as

Question 29. When micropyle, chalaza and hilum lie in a straight line, the ovule is said to be

Question 30. Fragrant flowers with well developed nectaries are an adaptation for

Question 31. Pollen kitt is generally found in

Question 32. Which of these is a condition that makes flowers invariably autogamous ?

Question 33. The innermost layer of anther is tapetum whose function is

Question 34. Callase enzyme which dissolves callose of pollen tetrads to separate four pollens is provided by

Question 35. In angiosperms various stages of reductional division can best be studied in

Question 36. Study of pollen grains is called

Question 37. Several pollen grains form a unit designated as pollinium in Family

Question 38. The outermost and innermost wall layers of microsporangium in an anther are respectively

Question 39. During microsporogenesis, meiosis occurs in

Question 40. From among the sets of terms given below, identify those that are associated with the gynoecium.

Question 41. Science of cultivation, breeding, marketing and arrangement of flowers is called

Question 42. Nonessential floral organs in a flower are

Question 41. Triple fusion in Capsella bursa pastoris is fusion of male gamete with

Question 42. Double fertilisation was first discovered in 1898 by _______ in Fritillaria and Lilium.

Question 43. If an endosperm cell of an angiosperm contains 24 chromosomes, the number of chromosomes in each cell of the root will be

Question 44. The cells of endosperm have 24 chromosomes. What will be the number of chromosomes in the gametes ?

Question 45. The true embryo develops as a result to fusion of

Question 46. Father of Indian embryology is

Question 47. The portion of embryonal axis between plumule (future shoot) and cotyledons is called

Question 48. Coleoptile and coleorhiza are the protective sheaths _______ covering _______ and _______ respectively.

Question 49. _______ is not an endospermic seed.

Question 50. Endosperm is completely consumed by the developing embryo in