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Photosynthesis

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  1. The enzyme that catalyses carbon dioxide fixation in C4 plants is
    1. RuBP carboxylase
    2. PEP carboxylase
    3. Carbonic anhydrase
    4. Carboxy dismutase
Correct Option: B

In C4 plants, the primary acceptor of CO2 is phosphoenol pyruvate. It combines with carbon dioxide in the presence of PEP carboxylase to form oxalo acetic acid in mesophyll cells.


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