Assertion :Stomata are absent in submerged hydrophytes. Reason: Respiration occurs by means of air chambers in submerged plants.

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 B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
In fully submerged hydrophytes, stomata is mostly absent as it is non-functional because there is no need for them as they are surrounded by water, not air.
Hydrophytes possess air chambers to store air. Oxygen produced during photosynthesis is stored in these chambers and is used in respiration. Similarly carbon dioxide evolved in respiration is also stored in air chambers. Hence, option B is correct.

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