Plant Growth and Development Quiz | Plant Growth and Development Multiple Choice Questions with Answers

61 Leaf abscission is prevented by

[A] Gibberellin

[B] Ethylene

[C] Abscisic acid

[D] Auxin

Answer: Auxin

62 Hormone involved in the formation of winter Buds is

[A] GA

[B] CK

[C] ABA

[D] Ethylene

Answer: ABA

63 Agent Orange of Vietnam War was

[A] 2,4,5-T

[B] 2,4-D

[C] NAA

[D] Mixture of 1 and 2

Answer: Mixture of 1 and 2

64 Growth of a shoot or a root involves

[A] Cell enlargement

[B] Cell division

[C] Cell differentiation

[D] All the above

Answer: All the above

65 Apical dominance is due to

[A] C/N ratio

[B] Photoperiodism

[C] Phototropism

[D] Auxin cytokinin balance

Answer: Auxin cytokinin balance