On the functional basis Fe, Zn, Mn and Cu have been classified as

A. Main structural elements

B. Accessory structural elements

C. Regulators and carriers

D. Catalyst and activators

Answer: Option D

Solution(By Examveda Team)

On the functional basis Fe, Zn, Mn and Cu have been classified as Catalysts and activators.
These are micronutrients required by the plant in very small amounts and they usually act as catalysts or enzyme activators for most of the biochemical reactions in the plant cell.