Which of the following statements is incorrec | vedclass

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(B) The statement in option $B$ is incorrect. Injecting pre-formed antibodies directly into the body is known as passive immunity,not active acquired

Vedclass · Accepted Answer

The process of injecting pre-formed antibodies directly into the body is called active acquired immunity.

Vedclass · Answer

(B) The statement in option $B$ is incorrect. Injecting pre-formed antibodies directly into the body is known as passive immunity,not active acquired immunity. Active immunity involves the body's own immune system producing antibodies in response to an antigen (like a vaccine or natural infection),which is a slow process. Colostrum,the yellowish fluid secreted by the mother during the initial days of lactation,is rich in $IgA$ antibodies,providing passive immunity to the infant. Antigens are indeed foreign substances like microbes or proteins that trigger an immune response.

Column-$I$	Column-$II$
$P$. Physical barriers	$I$. Acid in stomach,saliva in mouth,tears from eyes
$Q$. Physiological barriers	$II$. Skin,mucus coating of epithelium lining the respiratory,gastrointestinal and urogenital tracts
$R$. Cellular barriers	$III$. Interferons
$S$. Cytokine barriers	$IV$. Polymorphonuclear leukocytes ($PMNL$-neutrophils),monocytes,$NK$ cells,macrophages

Which of the following statements is incorrect?

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