Given below are two statements: one is labelled as Assertion (A) and other is labelled as Reason (R).
Assertion (A): Acquired immunity is a pathogen-specific immunity.
Reason (R): Receptors on immune cells recognise specific antigens present on the surface of pathogens triggering an immune response.
In light of the above statements, choose the correct answer from the options given below.

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(A) is true but (R) is false.

Both (A) and (R) are false.

Both (A) and (R) are true but (R) is not the correct explanation of (A).

Both (A) and (R) are true and (R) is the correct explanation of (A).

answer is A.

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Detailed Solution

Acquired immunity is specific because it involves the recognition and targeting of specific pathogens or foreign substances by immune cells. This specificity is achieved through the presence of receptors on immune cells that can recognize and bind to specific molecules, known as antigens, present on the surface of pathogens or foreign substances. Once a pathogen or foreign substance is recognized, the immune system mounts a targeted response to eliminate it. This specificity allows the immune system to distinguish between different pathogens and mount an appropriate response to each one, leading to effective protection against a wide range of infectious agents.

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