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Krebs Cycle

The primary C...

Question

The primary $C O_{2}$ acceptor in $C_{4}$ plant is

A

RuBP

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B

Phosphoenol pyruvate

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C

PEP carboxylase

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D

PGA

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Solution

The correct option is B Phosphoenol pyruvate
In C4 plants, a 4 - C compound oxaloacetic acid (OAA) is the first stable product, and phosphoenol pyruvate (PEP) is the $C O_{2}$ acceptor. This reaction is catalysed by the enzyme PEP carboxylase in mesophyll cells of the leaf.

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Similar questions

Q. Phosphoenol pyruvate (PEP) is the primary

{CO}_{2}

Q. Assertion :The primary

C O_{2}

C_{4}

pathway is 3-carbon molecule phosphoenol pyruvate (PEP) Reason: The enzyme responsible for this fixation is PEP carboxylic or PEPcase

Q. Assertion :In

c_{4}

Plants, the bundle sheath cells are rich in an enzyme phosphoenol pyruvate carboxylase (PEP case) Reason: In

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plants, the mesophyll cells are rich in an enzyme Rbulose carboxylase-oxygenase (RuBisCO).

Q. The enzyme used in

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Q. The enzyme used in

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fixation in mesophyll cells of C4 plants:

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