Botany-C4 Pathway
NEET Botany C4 Pathway MCQ Question
Type: MCQ-diagram based-Medium-Class 11
In the C4 pathway diagram, which enzyme is responsible for the initial fixation of CO2 in the mesophyll cells, and what is the primary product formed?
A
PEP carboxylase; OAA
B
RuBisCO; 3-PGA
C
PEP carboxylase; 3-PGA
D
RuBisCO; OAA
Correct Answer
Option A
Detailed Explanation
In the C4 pathway, PEP carboxylase fixes CO2 in the mesophyll cells to form the C4 acid oxaloacetic acid (OAA), unlike RuBisCO which is absent in these cells.
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