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Question
The naturally occurring growth inhibitor is
The naturally occurring growth inhibitor is
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Solution
The correct option is B ABA (abscisic acid)
The naturally occurring growth inhibitor is ABA (abscisic acid).Abscisic acid is a growth inhibitor which retards or suppresses growth and metabolism.It induces bud dormancy in a number of plants. In perennial plants, ABA causes the active axillary buds to become dormant.ABA maintains dormancy in many seeds.It inhibits mitosis in vascular cambium.It accelerates senescence in leavesIt functions as a stress hormone by inducing a temporary closure of stomata, to tide over adverse environmental conditionsIt promotes abscission of leaves, flowers and fruits in most of the plantsIt inhibits seed germination.It delays cell division and cell elongationIt inhibits flowering except in some short day plants where it promotes flowering.Thus, the correct answer is option B.
The naturally occurring growth inhibitor is ABA (abscisic acid).
Abscisic acid is a growth inhibitor which retards or suppresses growth and metabolism.
It induces bud dormancy in a number of plants. In perennial plants, ABA causes the active axillary buds to become dormant.
ABA maintains dormancy in many seeds.
It inhibits mitosis in vascular cambium.
It accelerates senescence in leaves
It functions as a stress hormone by inducing a temporary closure of stomata, to tide over adverse environmental conditions
It promotes abscission of leaves, flowers and fruits in most of the plants
It inhibits seed germination.
It delays cell division and cell elongation
It inhibits flowering except in some short day plants where it promotes flowering.
Thus, the correct answer is option B.
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