NEET Biology NEET PYQ-Respiration In Plants

  • question_answer
    During photorespiration, the oxygen consuming reaction (s) occur in: [AIPMT (S) 2006]

    A) stroma of chloroplasts and mitochondria

    B) stroma of chloroplasts and peroxisomes

    C) grana of chloroplasts and peroxisomes

    D) stroma of chloroplasts

    Correct Answer: B

    Solution :

    [B] The first reaction of photorespiration occur in stroma of chloroplast. In this reaction the RuBP (Ribulose 1-5 Diphosphate) consume one oxygen molecule in presence of enzyme Rubisco. In peroxisome the glycolate transfered from chloroplast takes up O2 and formed the glyoxylate whereas the H2O2 release as byproduct.


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