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NEET Biology Photosynthesis in Higher Plants Question Bank Critical Thinking

  • question_answer
    The first product of\[C{{O}_{2}}\]fixation in Hatch and Slack \[({{C}_{4}})\]cycle in plants is [CPMT 1983; KCET (Med.) 2001]

    A) Formation of oxaloacetate by carboxylation of phosphoenol pyruvate (PEP) in bundle sheath cells

    B) Formation of phosphoglyceric acid in mesophyll cells

    C) Formation of bundle sheath cells

    D) Formation of oxaloacetate by carboxylation of phosphoenol pyruvate (PEP) in the mesophyll cells

    Correct Answer: D

    Solution :

    \[C{{O}_{2}}\]taken from the atmosphere is accepted by posphoenolpyruvic acid (PEP) present in the chloroplast of mesophyll cells of these leaves, leading to the formation of a 4-C compound, oxaloacetic acid (OAA).


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