2nd Year MCQs Biology
Chapter No. 18 Reproduction
41. Which part ultimately matures into a fruit?
(A) Integument
(B) Ovary
(C) Archegonium
(D) Ovule
Answer:
(B) Ovary
42. Which of the following is part of the third whorl of flower?
(A) Calyx
(B) Corolla
(C) Petal
(D) Stamen
Answer:
(D) Stamen
43. Which of the following is formed in the double fertilization and becomes an endosperm?
(A) Synergid cells
(B) Antipodal cells
(C) Primary endosperm nucleus
(D) Triploid (3n) nucleus
Answer:
(D) Triploid (3n) nucleus
44. A pollen grain is:
(A) Immature male gametophyte
(B) Spore
(C) Fruiting body
(D) Mature male gametophyte
Answer:
(A) Immature male gametophyte
45. In plants, spores are formed by 1, ‘whereas gametes are formed by 2:
(A) 1-meiosis, 2-mitosis
(B) 1 -fission, 2-fusion
(C) 1-meiosis, 2-meiosis
(D) 1-mitosis, 2-mitosis
Answer:
(A) 1-meiosis, 2-mitosis
46. From life cycle point of view the most important part of a plant is:
(A) Flower
(B) Leaf
(C) Stern
(D) Root
Answer:
(A) Flower
47. The main embryo develops from the structure formed as a result of fusion of:
(A) 2 polar nuclei of embryo sac
(B) Definitive nucleus and male gamete
(C) Egg cell and male gamete
(D) Male gamete and synergids
Answer:
(C) Egg cell and male gamete
48. The fertilization occurs in
(A) Ovary
(B) Ovule
(C) Embryo sac
(D) Nucellus
Answer:
(C) Embryo sac
49. The part of embryo just below the cotyledons that terminates into radicle is called:
(A) Epicotyl
(B) Hypocotyl
(C) Plumule
(D) None of these
Answer:
(B) Hypocotyl
50. The part of embryo just above the cotyledons that terminates into plumule is called:
(A) Epicotyl
(B) Hypocotyl
(C) Radicle
(D) Coleorhiza
Answer:
(A) Epicotyl
Go To Previous Page for More MCQs
We also available on Social Media
at facebook( fb )
https://facebook.com/786Timespk
https://facebook.com/786Timesnews
Also available on
Twitter ID: https://twitter.com/786times
