PEP is primary CO2 acceptor in

Question

PEP is primary CO2 acceptor in (A) C4 plants (B) C3 plants (C) C2 plants (D) both C3 and C4 plants

Tardigrade Admin · Accepted Answer

In C4 plants, initial fixation of CO2 or carboxylation occurs in mesophyll cells. The chloroplasts of mesophyll cells possess enzyme PEP carboxylase (or PEP case) for initial fixation of CO2. The primary acceptor of CO2 is phosphoenol pyruvate or PEP. It combines with CO2 in the presence of PEP carboxylase (or PEPcase) to form oxaloacetic acid or oxaloacetate (OAA).

Q. $PEP$ is primary $C O_{2}$ acceptor in

$C_{4}$ plants

$C_{3}$ plants

$C_{2}$ plants

both $C_{3}$ and $C_{4}$ plants

Q. PEP is primary CO2​acceptor in

C4​ plants

C3​ plants

C2​ plants

both C3​ and C4​ plants

Q. $PEP$ is primary $C O_{2}$ acceptor in

$C_{4}$ plants

$C_{3}$ plants

$C_{2}$ plants

both $C_{3}$ and $C_{4}$ plants