Assertion :Chemosynthesis is an autotrophic nutrition. Reason: Chemoautotrophs contain chlorophyll pigments.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Both Assertion and Reason are incorrect.

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Solution

The correct option is C Assertion is correct but Reason is incorrect.
Chemosynthesis is a type of autotrophic nutrition in which organisms (called chemoautotrophs) synthesize organic materials using energy derived from the chemical nutrients.
Chemoautotrophs does not contain chlorophyll pigments as they use chemical compounds for energy and CO $_{2}$ for carbon. Hence, option C is correct.

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