Which one of the following generally act as an antagonists to gibberellins?
A
Zeatin
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B
Ethylene
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C
ABA
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D
IAA
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Solution
The correct option is D ABA Abscisic acid (ABA) is a growth retardation
hormone which inhibits seed germination and seedling growth. Treatment of
dormant seeds with gibberellins partly overcome the effects of ABA and
stimulates seed germination.