Assertion :Statement 1 : The chemical substances produced by microorganisms which in low concentration are antagonistic to the growth of other microorganisms are called antibiotics. Reason: Statement 2 : A preparation of a dead or attenuated pathogen, which when injected into a healthy person, provides immunity against a number of diseases, is called vaccine.

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
Antibiotics are the chemical substances which are used to treat bacterial infection. It blocks the reproductive cycle of the bacteria.
Vaccines are the suspension of weakened or killed pathogen which generates an immune response by producing antibodies.
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
So, the correct answer is option B.

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