Question

Assertion :Action spectra for photosynthesis help to identify the pigment involved in the process. Reason: Because these spectra often closely match the absorption spectra of the pigments that participate in the process.

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Both Assertion and Reason are incorrect

Answer 1

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

Absorption spectra is a graph showing the degree of absorption of light by a pigment as a function of wavelength whereas action spectra is a graph showing degree to which different wavelengths can affect the rate of photosynthesis. So action spectra can help to identify the pigment involved in photosynthesis. Hence, assertion is correct.

Generally the action spectra for the pigments participating in photosynthesis follows the absorption spectra. So, it closely matches the absorption spectra of pigments participating in the process. Hence, reason is also true and correct explanation for assertion.

So, the correct answer is 'Both Assertion and Reason are correct and Reason is the correct explanation for Assertion'.