Zinc is essential for
A. Stomatal closing
B. biosynthesis of 3-IAA
C. Oxidation of carbohydrates
D. None of the above
Answer: Option B
Solution (By Examveda Team)
Zinc is essential for biosynthesis of 3-IAA in plants.Zinc activates tryptophan synthetase, which regulates the synthesis of tryptophan, involved in the biosynthesis of indoleacetic acid (IAA).
Indole-3-acetic acid (IAA, 3-IAA) is the most common naturally occurring plant hormone of the auxin class. It is the best-known of the auxins and has been the subject of extensive studies by plant physiologists. IAA is a derivative of indole, containing a carboxymethyl substituent.
This Question Belongs to Agriculture >> Genetics And Plant Breeding
Join The Discussion