2nd Year MCQs Biology
Chapter No. 18 Reproduction
61. It is type of racemose inflorescence that is flat-topped or convex because the outer pedicels are progressively longer than the inner ones.
(A) Corymb
(B) Capitulum
(C) Spadix
(D) Spike
Answer:
(A) Corymb
62. What is required?
(A) Water
(B) Suitable temperature
(C) Both (A) and (B)
(D) None of these
Answer:
(C) Both (A) and (B)
63. The process in which fruit develops without fertilization is called:
(A) Parthenogenesis
(B) Parthenocarpy
(C) Viviparous germination
(D) Apomixis
Answer:
(A) Parthegenesis
64. The pollen grain consists of:
(A) Exine part
(B) Intim part 1,6
(C) Tube nucleus and generative nucleus
(D) All (A), (B) and (C)
Answer:
(D) All (A), (B) and (C)
65. Hypo al germination takes place due to rapid growth of:
(A) Epicotyl
(B) Hypocotyl
(C) Cotyledon
(D) All (A) (B) and (C)
Answer:
(A) Epicotyl
66. Epigeal germination takes place due to rapid growth of:
(A) Epicotyl
(B) Hypocotyl
(C) Cotyledon
(D) All (A) (13) and (C)
Answer:
(B) Hypocotyl
67. A special t-3, Type of reproduction, in which seed starts germinating inside fruit is
(A) Epigeal germination
(B) Hypogeal germination
(C) Viviparous germination
(D) All choices are correct
Answer:
(C) Viviparous germination
68. The first organ to emerge from the germinating seed is:
(A) Radicle
(B) Plumule
(C) Cotyledon
(D) Epicotyl
Answer:
(A) Radicle
69. Promotion of flowering by cold treatment given to imbibed seeds or young plants is known as:
(A) Parthenocarpy
(B) Parthenogenesis
(C) Apornixi
(D) Vernalization
Answer:
(D) Vernalization
70. Spinach is:
(A) Long day plant
(B) Short day plant
(C) Day neutral plant
(D) None of these
Answer:
(A) Long day plant
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