What is a Major Function of Magnesium in Plants

Question

What is a major function of magnesium in plants?
A) to be a component of lignin-biosynthetic enzymes
B) to be a component of DNA and RNA
C) to be a component of chlorophyll
D) to be active in amino acid formation
E) to be required to regenerate phosphoenolpyruvate in C₄ and CAM plants

Accepted Answer

Magnesium is a key component of the chlorophyll molecule, which is responsible for capturing light energy during photosynthesis.

Answer: E
 Magnesium is also required in the process of regenerating phosphoenolpyruvate in C₄ and CAM plants, which are mechanisms used by certain plants to minimize water loss during photosynthesis.