1. Absorption of light energy by chlorophyll
  2. Conversion of light energy to chemical energy
  3. Splitting of water molecules into hydrogen and oxygen
  4. Oxidation of carbon dioxide to carbohydrates
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Option 4 : Oxidation of carbon dioxide to carbohydrates

Photosynthesis is the process by which green plants prepare their own food. The events during photosynthesis are:

1) Absorption of light energy by chlorophyll.

2) Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen.

3) Reduction of carbon dioxide into carbohydrates.

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