Assertion A: Innate immunity consists of vari | vedclass

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(C) Innate immunity is non-specific type of defense that is present at the time of birth. It provides protection by different types of barriers which

Vedclass · Accepted Answer

$A$ is true and $R$ is false.

Vedclass · Answer

(C) Innate immunity is non-specific type of defense that is present at the time of birth. It provides protection by different types of barriers which prevent the entry of foreign agents into our body. These include physical,physiological,cellular,and cytokine barriers. Thus,Assertion $A$ is true.Innate immunity does not require prior exposure to a pathogen to be stimulated; it is always ready to act. Acquired immunity,on the other hand,is pathogen-specific and requires exposure to a pathogen for its activation. Therefore,the statement that exposure to a pathogen is required for the stimulation of innate immunity is incorrect. Thus,Reason $R$ is false.

Column $I$ (Type of Immunity)	Column $II$ (Example)
$i$. Natural acquired active	$a$. $BCG$ Vaccine
$ii$. Artificial acquired active	$b$. Immunity against measles
$iii$. Natural acquired passive	$c$. Colostrum
$iv$. Artificial acquired passive	$d$. Injections against rabies

Assertion $A$: Innate immunity consists of various barriers. Reason $R$: Exposure to a pathogen is required for the stimulation of innate immunity. Which option is correct for Assertion $A$ and Reason $R$?

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