BotanyThe enzyme that catalyses initial carbon dioxide fixation in C4 plants is

The enzyme that catalyses initial carbon dioxide fixation in C₄ plants is

A
RuBP carboxylase (RUBISCO)
B
PEP carboxylase (PEPcase)
C
Carbonic anhydrase
D
Carboxy dismutase

Solution:

In C₄plants, primary CO₂ acceptor is a 3-carbon molecule phosphoenol pyruvate (PEP) and is present in the mesophyll cells. The enzyme responsible for this fixation is PEP carboxylase or PEPcase.