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Question
Which of the following PGR is also known as anti-gibberellin?
Which of the following PGR is also known as anti-gibberellin?
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Solution
The correct option is C Abscisic acid
Antagonism occurs when a hormone opposes or reverses the effect of another hormone.
Abscisic acid is a growth-inhibiting hormone that causes dormancy and abscission (dropping leaves, flowers, and fruits). It regulates the dormancy of buds, tubers, and seeds by inhibiting the growth process. As ABA inhibits gibberellin-stimulated growth in plants, it is called anti-gibberellin. ABA acts as an antagonist to gibberellin. Dormant seeds germinate when gibberellins overcome ABA.
Auxins, gibberellins, and cytokinins are growth-promoting hormones, whereas ethylene is a gaseous PGR that shows growth stimulation and inhibition activities.
Antagonism occurs when a hormone opposes or reverses the effect of another hormone.
Abscisic acid is a growth-inhibiting hormone that causes dormancy and abscission (dropping leaves, flowers, and fruits). It regulates the dormancy of buds, tubers, and seeds by inhibiting the growth process. As ABA inhibits gibberellin-stimulated growth in plants, it is called anti-gibberellin. ABA acts as an antagonist to gibberellin. Dormant seeds germinate when gibberellins overcome ABA.
Auxins, gibberellins, and cytokinins are growth-promoting hormones, whereas ethylene is a gaseous PGR that shows growth stimulation and inhibition activities.
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