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प्रश्न
Which plant hormone is called an antitranspirant?
विकल्प
Gibberellins
Auxin
Ethylene
ABA
MCQ
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उत्तर
ABA
Explanation:
Abscisic acid (ABA) acts as a stress hormone that triggers the rapid closure of stomata during water deficiency. By reducing the loss of water vapour from leaves, it effectively functions as a natural antitranspirant for the plant.
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