Q. In which cells of leaf, pyruvate is converted to PEP in $C_{4}$ pathway?
A) Epidermal cells
B) Mesophyll cells
C) Bundle sheath cells
D) Guard cells
Explanation
In $C_{4}$-plants, initial fixation of $CO_{2}$ occurs in mesophyll cells.The primary acceptor of $CO_{2}$ is phosphoenol pyruvate (PEP). $CO_{2}$Is again fixed inside bundle sheath cells through Calvin cycle. The pyruvate is sent back to mesophyll cells where it is changed to phosphoenol pyruvate (PEP).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.