Which plant hormone promotes seed ,but dormany and caues stomatal closure
Or
Presence of ehich of the following in seed is associated with doemancy
Or
Leaf abscission , fruit fall , but dormancy occurs by which phytohormone

Options

A. IAA
B. Abscisic acid
C. `GA_(1)`
D. Cytokinin

Answer

b

Explanation

(b) Abscisic acid (also called stress harmone) is a mildily acidic growth harmone which function as a general growth inhibitor by counteracting other harmones (auxin,gibberlin,cytokinin) or the reactors immidiated by them. ABA induced bud dormancy, seed dormancy closure of stomata and stoppage of cabial activity