The experimental evidence that water is the source of the oxygen (O 2 ) produced during photosynthesis. Introduction: The process of photosynthesis includes carbon reduction. This process requires a hydrogen or electron donor for reducing the CO 2 (carbon dioxide). In plants, water is the main source of hydrogen and acts as a hydrogen donor. Therefore, the reduction of CO 2 involves hydrogen water and release of oxygen as a byproduct. This process is known as photolysis of water. This has proved experimentally by using heavy isotopes.

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Chapter 10.1, Problem 2R

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The experimental evidence that water is the source of the oxygen (O₂) produced during photosynthesis.

Introduction:

The process of photosynthesis includes carbon reduction. This process requires a hydrogen or electron donor for reducing the CO₂ (carbon dioxide). In plants, water is the main source of hydrogen and acts as a hydrogen donor. Therefore, the reduction of CO₂ involves hydrogen water and release of oxygen as a byproduct. This process is known as photolysis of water. This has proved experimentally by using heavy isotopes.

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