2nd Year MCQs Biology
Chapter No. 18 Reproduction
31. A carpel is a leaf which has been modified to produce:
(A) Microsporania
(B) 2 male gametes
(C) Pollen grains
(D) Ovules
Answer:
(D) Ovules
32. The stamens are leaves modified for the production of:
(A) Microspores
(B) Megaspores
(C) Ovules
(D) Seed
Answer:
(A) Microspores
33. The sepals and petals are:
(A) Reproductive parts of flower
(B) Non-reproductive parts of flower
(C) Parts of gametophyte
(D) Both (A) and (B)
Answer:
(B) Non-reproductive parts of flower
34. The ovule contains:
(A) Microsporangium
(B) Male gametophyte
(C) Embryo sac
(D) All (A), (B) and (C)
Answer:
(C) Embryo sac
35. The unisexual flowers are called:
(A) Stam inate
(B) Carpellate
(C) Both (A) and (B)
(D) Monoecious
Answer:
(C) Both (A) and (B)
36. If staminate and carpellate flowers are present on same plant it is termed as:
(A) Monoecious
(B) Dioccious
(C) Unisexual
(D) None of the above
Answer:
(A) Monoecious
37. Date palms are:
(A) Dioecious
(B) Monoecious
(C) Neuter
(D) Bisexual
Answer:
(A) Dioecious
38. In angiosperms, double fertilization produces two distinct portions of the seed. The endosperm portion’s role is to:
(A) Develop into the embryo
(B) Nourish the embryo
(C) Develop into the mature sperm
(D) Serves a reservoir for extra DNA
Answer:
(B) Nourish the embryo
39. Each of the following is a part of a seed except the:
(A) Embryo
(B) Endosperm
(C) Seed-coat
(D) Garnetophyte
Answer:
(D) Garnetophyte
40. The mature female gametophyte of an angiosperm is:
(A) The archegonium and its egg cell
(B) The ovule inside the ovary
(C) The carpel after pollination
(D) An embryo sac with 8 nuclei and 7 cells
Answer:
(D) An embryo sac with 8 nuclei and 7 cells
