question_answer

In sugarcane plant 14CO2 is fixed in a malic acid, in which the enzyme that fixes CO2 is: [AIPMT 2003]

A) ribulose phosphate kinase

B) fructose phosphatase

C) ribulose Diphosphate carboxylase

D) phosphoenol pyruvic acid carboxylase

Correct Answer: D

Solution :

[D] In C4 plants, CO2 is picked up by phosphoenolpyruvate (PEP) and the reaction being catalyzed by PEP carboxylase.