Welcome to your 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