Assertion :The first set of reactions of photosynthesis take place in the thylakoid, where chlorophyll and other pigments are located and is called light dependent reactions. Reason: They are dependent on light for the excitation of 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 A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
In photosynthesis, the first set of reactions is called as light-dependent reactions, which are dependent on light. These set of reactions takes place in thylakoids where the photosynthetic pigments are located. So, the correct answer is option A.

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