Photosynthesis is a process that helps green plants synthesize their food. A cascade of events and chemical reactions take place in a specified sequential order. Choose an event that does not take place in photosynthesis:

A.  Absorption of light energy by chlorophyll

B. Reduction of carbon dioxide to carbohydrate

C. Oxidation of carbon to carbon dioxide

D. Splitting of water 

Solution: C

The process by which plants convert carbon dioxide, water, and sunlight into oxygen and energy in the form of sugar is known as photosynthesis.

Here are the different steps that make up the process of photosynthesis:
  • Sunlight energy is absorbed by the chlorophyll found in leaves.
  • Conversion of light energy to chemical energy. The water molecule splits into its corresponding components, hydrogen, and oxygen, during this process.
  • Light energy reduces carbon dioxide into carbohydrates like glucose by using the hydrogen and oxygen produced in the above step.
Hence, (c) is the correct answer.


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