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BIOLOGY

JAMB 2012 - Question 26

Biology 2012 JAMB Past Questions - Question 26: Plant growth can be artificially stimulated by the addition of

Choose the most appropriate option for the gap .

Plant growth can be artificially stimulated by the addition of

A: gibberellin

B: kinin

C: abscisic acid

D: ethylene

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Correct Answer

Explanation

It stimulates plant growth such as elongation of stem. Abscisic acid promotes bud dormancy. It also promotes leaf and fruit fall. Ethylene or ethene inhibits or stops stem elongation rather it hastens the ripening of fruits. Kinin (cytokinin) breaks seed dormancy. It promotes the growth of lateral buds.