(C) $IgA$ and $IgM$ are types of immunoglobulins,commonly known as antibodies.Antibodies are glycoprotein molecules produced by plasma cells (differen

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(C) $IgA$ and $IgM$ are types of immunoglobulins,commonly known as antibodies.Antibodies are glycoprotein molecules produced by plasma cells (differentiated $B$-lymphocytes) in response to an antigen.There are five main classes of antibodies in humans: $IgA, IgD, IgE, IgG,$ and $IgM$.Therefore,the correct option is $C$.

Class 12 Biology Human Health and Disease Immunity

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What are $IgA$ and $IgM$?

A
Types of $T$-cells
B
Types of $B$-cells
C
Types of antibodies
D
Types of antigens

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Class 12

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Human Health and Disease

Subtopic

Immunity

The immunity developed in the body after recovering from a disease is:

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Which of the following is a characteristic of antibodies?

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What is the full form of $CMI$?

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Match the following columns:

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

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