Q. The first carbon dioxide acceptor in $C_{4}$ cycle is
A) $RuBP$
B) $PEP$
C) $PGA$
D) $OAA$
Explanation
In $C_{4}$-plants, fixation of carbon dioxide occurs in mesophyll cells. The primary acceptor of carbon dioxide is phosphoenol pyruvate (PEP). It combines with carbon dioxide in the presence of PEP carboxylase to form oxaloacetate or oxaloacetic acid (OAA).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.