10th Class Science Life Processes

  • question_answer 57)
        Oxygen liberated during photosynthesis comes from (a) water                         (b) chlorophyll                       (c) carbon dioxide          (d) glucose

    Answer:

                      (a) Oxygen liberated during photosynthesis comes from water. The following events occur during photosynthesis (i) Absorption of light energy by chlorophyll. (ii) Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen. (iii) Reduction of carbon dioxide to carbohydrates, which is used as field (or plants.


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