Plant Growth and Development Question 64

64. Leaf fall can be prevented with the help of

(a) abscisic acid

(b) auxins

(c) florigen

(d) cytokinins

Show Answer

Answer : d

Hints & Solutions

(d) It is due to Richmond-Lang effect. Cytokinins prevent degeneration of chlorophyll, proteins and nucleic acids. They increase of inflow of auxin and amino acids. It reactivates leaf metabolism.



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