Assertion :Phagocyte cells digest microbes and debris. Reason: Natural Killer cells destroy virus-infected cells and tumour cells.

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
A) Assertion is correct as phagocytes perform phagocytosis and digest microbes and other debris. Reason is correct because natural killer cells (lymphocytes) destroy damaged, faulty and infected cells but Reason does not explain the Assertion.
B) Reason is not the correct explanation for Assertion as natural killer cells are not related to phagocytes.
C) Reason is correct.
D) Both Assertion and Reason are correct.
So the correct answer is 'Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion'.

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