Plant Growth and Development

NEET Biology · 81 questions · Page 9 of 9 · Click an option or "Show Solution" to reveal answer

Q81

The regulator which retards ageing/senescence of plant parts is

A cytokinin

B auxin

C gibberellin

D abscisic acid

Correct Answer

Option A

Solution

(a) Cytokinins delay senescence by retaining chlorophyll (Richmond-Lang effect).

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