Which of the following is a primary growth-inhibiting hormone in plants? - Biology MCQ Competitive Examination 2026 | ExamTest.live | ExamTest.live

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Which of the following is a primary growth-inhibiting hormone in plants?

A $Auxin$
B $Gibberellin$
C $Cytokinin$
D $Abscisic acid$

Solution & Step-by-step Explanation

Abscisic acid (ABA) is a crucial plant growth inhibitor. It regulates leaf abscission, promotes seed dormancy, and aids the plant during stressful conditions by closing stomata. Auxins, Gibberellins, and Cytokinins are primarily plant growth promoters.

Practice this question

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Which of the following is a primary growth-inhibiting hormone in plants?

A

Auxin

B

Gibberellin

C

Cytokinin

D

Abscisic acid

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Plant Physiology Plant Hormones

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