Question

what is the source of oxygen liberated during photosynthesis

Answer 1

Photosynthesis is the process by which green plants (containing chlorophyll) convert solar energy to chemical energy of food. The process can be represented by the following chemical reaction:

In this process, carbon dioxide and water react, in presence of sunlight, to generate glucose molecules and oxygen.

Answer 2

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YOUR ANSWER⬇
The carbon dioxide and water provide the source for oxygen.
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