Deficiency of zinc, in a plant , shows its effect on the biosynthesis of which plant growth regulator ?
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Answer:
Indole-acetic acid
Explanation:
Zinc is available to the plants for absorption in the divalent form. It occurs in the form of minerals as hornblende, magnetite, biotite etc., from where it is released by weathering. It is involved in the synthesis of Indole-acetic acid in plants. It is an activator in the enzyme tryptophan synthetase.
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