Question

Assertion :In Aquatic conditions usually ${CO}_2$ concentration regulates the rate of photosynthesis. Reason: In Aquatic conditions generally ${CO}_2$ is available at suboptimal level.

• 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

Aquatic respiration is the type of respiration in which plants live underwater and release oxygen which is inhaled by aquatic animals. Plants require carbon dioxide for respiration and photosynthesis, so they float and come at the surface of the water their stomata take up the carbon dioxide for respiration. These plants are dependent upon the availability of carbon dioxide for respiration. When the aquatic animals exhale carbon dioxide it gets accumulated in the suboptimal level (Level just below the water surface) and is easily taken up by the aquatic plants.

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