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Question

Which of the following is excited during photosynthesis?

A
Chlorophyll
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B
Oxygen
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C
Carbon dioxide
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D
Water
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Solution

The correct option is A Chlorophyll
Light reaction of the photosynthesis starts from the excitation of chlorophyll by a photon. When a photon of light energy falls on chlorophyll molecule, it gets excited and moves on to a higher level called excited singlet state. The electron gap in the photosystem is further filled by the process of photolysis.
So, the correct answer is option A.

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