Assertion :Stomata open and close in response to turgor changes. Reason: pH changes are brought about by influx and efflux of H $^{+}$ ions.

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
Stomata of plants open and close in response to turgor pressure. This pressure is mainly because of the fluids inside the cells.
The amount of H+ ions present inside and outside the cell greatly affects its pH. Hence, influx and outflux of H+ ions affect the pH of the cell.
Hence, both the assertion and the reason are correct but the reason is not the correct explanation of the assertion.
So, the correct answer is 'Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion'.

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Assertion :Stomata open and close in response to turgor changes. Reason: pH changes are brought about by influx and efflux of H+ ions.

Assertion :Stomata open and close in response to turgor changes. Reason: pH changes are brought about by influx and efflux of H $^{+}$ ions.