Assertion :A plant growing in complete dark will show only dark reactions Reason: 'Dark reactions' can occur in dark and are called a light-independent reaction

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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Assertion is incorrect but Reason is correct

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Solution

The correct option is D Assertion is incorrect but Reason is correct
Dark reactions make use of the organic energy molecules (ATP and NADPH) which are end products of light reactions. This reaction cycle is also called the Calvin Benson cycle, and it occurs in the stroma.
ATP provides the energy, while NADPH provides the electrons required to fix the CO $_{2}$ (carbon dioxide) into carbohydrates. 'Dark reactions' occur in dark but is light reaction dependent. Thus, the reason is correct.
A plant growing in dark will show both light and dark reactions. So, the assertion is wrong.

Thus, the correct answer is option D.

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