BHU PMT BHU PMT (Mains) Solved Paper-2010

  • question_answer
    In photosynthesis, splitting of water and release of oxygen occur during

    A)  photolysis                         

    B)  red drop

    C)   Pasteur effect                                

    D)  Calvin cycle

    Correct Answer: A

    Solution :

                     The process of photolysis of water is related to photosynthesis. In this process, the splitting of water molecules take place under the influence of oxygen evolving complex. Union of OH2 ions of these splitted water molecules lead to the release of oxygen. \[\begin{align}   & 4{{H}_{2}}O\xrightarrow{oxygen\,evolving\,complex}4OH\,+4{{H}^{+}} \\  & \downarrow _{\begin{smallmatrix}  complex \\  2{{H}_{2}}O+{{O}_{2}}\uparrow  \end{smallmatrix}}^{oxygen\,evolving} \\ \end{align}\]


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