Question

Delay in senescence in plants is achieved by ______
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Answer 1

Which one of the plant growth regulators would you use if you are asked to:

(a) Induce rooting in a twig

(b) Quickly ripen a fruit

(c) Delay leaf senescence

(d) Induce growth in axillary buds

(e) Bolt a rosette plant

(f) Induce immediate stomatal closure in leaves.

ANSWER

(a) Induce rooting in a twig – Auxins

(b) Quickly ripen a fruit – Ethylene

(c) Delay leaf senescence – Cytokinins

(d) Induce growth in axillary buds – Cytokinins

(e) Bolt a rosette plant – Gibberellic acid

(f) Induce immediate stomatal closure in leaves – Abscisic acid

Answer 2

Explanation:

a) Auxins

b) Ethylene

c) Cytokins

d) Cytokins

e) Gibberellic acid

f) Abscisis acid