NEET AIPMT SOLVED PAPER 2000

  • question_answer
                    Photochemical reactions in the chloroplast are directly involved in:                                         

    A)                 photolysis of water and phosphorylation of ADP to ATP

    B)                 formation of phosphoglyceric acid

    C)                 synthesis of glucose and starch

    D)                 fixation of carbon dioxide

    Correct Answer: A

    Solution :

                    \[C{{O}_{2}}\] is fixed in the stroma of the chloroplast leading to the synthesis of PGA from which glyceraldehyde phosphate is formed. From glyceraldehyde phosphate, sugar and starch are formed. All these do not require light. However, photolysis of water and phosphorylation of ADP to ATP requires light energy.


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