JIPMER Jipmer Medical Solved Paper-2013

  • question_answer
    Which of the following characteristics is are exhibited by \[{{C}_{4}}\]-plants? I. Kranz anatomy II. The first product of photosynthesis is oxaloacetic acid. III. Both PEP carboxylates and ribulose biphosphate carboxylate act as carbo-xylating enzymes. The correct option is

    A)  I and III, but not II

    B)  I and II, but not III

    C)  II and III, but not I

    D)  II and III

    Correct Answer: D

    Solution :

    \[{{C}_{4}}\text{-}\]-plants have Hatch and Slack cycle which an alternative \[C{{O}_{2}}\] flaxation pathway. These plants have Kranz anatomy in leaf where vascular bundles are surrounded by bundle sheath. In \[{{C}_{4}}\] cycle light reaction occurs in, mesophyll chloroplast by PEP carboxylaes and the assimilation of \[C{{O}_{2}}\] takes place in, i.e., dark phase in bundle sheath chloroplast by Rubisco.


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