In which cells of leaf, pyruvate is converted to PEP in C₄ pathway ?

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Bundle sheath cells

Mesophyll cells

Epidermal cells

Guard cells

answer is B.

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Detailed Solution

In C₄ plants the primary CO₂ acceptor is a 3- carbon molecule phosphoenol pyruvate (PEP) and is present in the mesophyll cell. The enzyme responsible for this fixation of PEP carboxylase. It is important that the mesophyll cells lack RuBisCO enzyme. C₄ acid OAA is formed in the mesophyll cells.

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