![](data:image/svg+xml;charset=utf-8,<svg height="300px" width="600px" xmlns="http://www.w3.org/2000/svg" version="1.1"/>)
PEP is the CO₂ receptor in which plants?
Options
(a) C₁
(b) C₂
(c) C₃
(d) C₄
Correct Answer:
C₄
Explanation:
CO₂ in C₄ plants (sugarcane, maize) combines with a 3-carbon compound phosphoenol pyruvate (PEP) to form 4-carbon compound oxaloacetic acid. This reaction is catalysed by PEP carboxylase and occurs in mesophyll cells.
