Question

The $C{O}_2$ acceptor, carboxylating enzyme and first stable product produced in mesophyll cells of $C_4$ plants are ____ respectively.

• A. RUBP, RuBisCO and PGA
• B. RUBP, PEP case and OAA
• C. PEP, RuBisCO and PGA
• D. PEP, PEP case and OAA

Answer 1

The correct option is D

PEP, PEP case and OAA

In the mesophyll cell of $C_4$ plant, PEP acts as a $C{O}_2$ acceptor and produces OAA (Oxaloacetic acid) as the first stable product. This reaction is catalysed by Phosphoenolpyruvate carboxylase (PEP case).