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Question
The hormone which accelerates senescence (ageing) and abscission of leaves is ______.
Options
IAA
GA3
ABA
GA1
Solution
The hormone which accelerates senescence (ageing) and abscission of leaves is ABA.
Explanation:
The hormone Abscisic Acid (ABA) is responsible for the abscission of foliage and the acceleration of senescence (ageing). It is an inhibitor of growth.
RELATED QUESTIONS
Bring out any two physiological activities of abscisic acid?
Which among the following is NOT a physiological role of abscisic acid?
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Abscisic acid functions as
______ hormone is responsible for the efflux of K+ ions from guard cells and acts as an antitranspirant.
Give the chemical features of abscisic acid.
Bud dormancy is induced by ______.
Name the stress hormone in plants.
A growth inhibiting hormone in plants:
Define the following term:
Abscission
