The source of oxygen liberated as byproduct during photosynthesis is
  • 1

    carbon dioxide

  • 2

    water

  • 3

    glucose

  • 4

    chlorophyll

Answer:- 2
Explanation:-

In the photosynthesis, there is splitting of water molecule into H+ and (1/2)02. So hydrogen is used up and O2 is released as by product.

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