Assertion: Passive immunity depends upon ready-made antibodies.

Reason: Passive immunity has a short life span.

Both assertion and reason are incorrect

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Both assertion and reason are correct and the reason is the correct explanation of the assertion

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The assertion is correct but the reason is wrong

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Both assertion and reason are correct but the reason is not the correct explanation of the assertion

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Solution

The correct option is D
Both assertion and reason are correct but the reason is not the correct explanation of the assertion

When the antibodies are produced in other human or animal body, which is then isolated, purified, and used as protection against disease for another individual, it is known as passive immunity. In other words, the body depends upon ready-made antibodies. Passive immunity differs from active immunity in the following respects:

(a) Immunity is fast established

(b) Immunity produced is only temporary (days to months) till the antibody is eliminated from the body.

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