1.

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 phytohormoneA. IAAB. Abscisic acidC. `GA_(1)`D. Cytokinin

Answer» Correct Answer - b
(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


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