BotanyWhich is the primary CO2 fixation product in C4plant?

Which is the primary CO2 fixation product in C4plant?

  1. A

    3-phosphoglyceric acid

  2. B

    Oxaloacetic acid

  3. C

    Phosphoenol pyruvate

  4. D

    RuBP

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    Solution:

    In C4 plants, a 4 - C compound oxaloacetic acid (OAA) is the first stable product, and phosphoenol pyruvate (PEP) is the CO2 acceptor. This reaction is catalyzed by the enzyme PEP carboxylase or PEP case in mesophyll cells of the leaf.

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