Class 11 Biology Plant Physiology Plant Growth and Development



Which plant hormone promotes seed, bud dormancy and causes stomatal closure ?
(a)
IAA
(b)
Abscisic acid
(c)
GA
(d)
Cytokinin
Correct answer: (b) 
Solution: Abscissic acid is a mildly acidic growth hormone which functions as a general growth inhibits by counteracting other hormones or the reactions mediated by them. ABA induced bud dormancy, seed dormancy, closure of stomata and stoppage of cambial activity.

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Similar topics
plant growth and development
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Connecting you to a tutor in 60 seconds.
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plant growth and development
transport in plants
respiration in plants
mineral nutrition
morphology of flowering plants