In $C_{4}$ plants, the first carbon dioxide acceptor is ..........

Pyruvate

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Phosphoenol pyruvate

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Ribulose Bisphosphate

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Ribulose 5 - phosphate

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Solution

The correct option is B Phosphoenol pyruvate
C $_{4}$ cycle also known as Hatch and Slack cycle operates in C $_{4}$ plants wherein the primary CO $_{2}$ acceptor is 3C compound, Phosphoenolpyruvate (PEP) and first stable product formed is a 4-carbon compound, oxalo acetic acid (OAA). Hence, option B is correct.

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