NEET Botany C4 Pathway MCQ Question
Which of the following combinations accurately describes the C4 pathway in higher plants?
The primary CO2 acceptor is PEP, and the enzyme PEP carboxylase is present in mesophyll cells.
C4 acids are formed in bundle sheath cells and directly enter the Calvin cycle.
Mesophyll cells contain RuBisCO, which is responsible for CO2 fixation.
4-carbon compounds are transported from mesophyll cells to bundle sheath cells for further processing.
Correct Answer
Detailed Explanation
The primary CO2 acceptor in the C4 pathway is phosphoenol pyruvate (PEP), and it is fixed by the enzyme PEP carboxylase present in the mesophyll cells. C4 acids are formed in the mesophyll and then transported to bundle sheath cells, not the other way around.
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