Q. In leaves of C₄ plants malic acid synthesis during CO₂ fixation occurs in
A) Guard cells
B) Epidermal cells
C) Mesophyll cells
D) Bundle sheath
Explanation
[Solution from source] In C₄ plants PEP carboxylase in the mesophyll cells fixes CO₂ into oxaloacetate, which is converted to malic acid there. The malate then moves to the bundle sheath, where it is decarboxylated, so the bundle sheath is where malate breaks down, not where it is made. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.