NEET Biology NEET PYQ-Photosynthesis and Translocation of Organic Solute

  • question_answer
    Which pigment system is inactivated in red drop? [AIPMT 2001]

    A) PS-l and PS-II

    B) PS-I                 

    C) PS-II

    D) none of these

    Correct Answer: A

    Solution :

    [A] The fall in photosynthetic yield beyond red region of spectrum (680 run) is called red drop. Reaction centre of PS-II is P680 while that of PS-I is 700.


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