Synthesis of IAA in plants requires

A. Copper

B. Nitrogen

C. Zinc

D. Boron

Answer: Option C

Solution(By Examveda Team)

Synthesis of IAA in plants requires Zinc.
Plants also require zinc for the synthesis of tryptophan, a key amino acid in the synthesis of the auxin indoleacetic acid (IAA).
Therefore, zinc also operates in the control of plant development through its indirect action on auxins.