Question

Match List-I with List-II:

List-I Types of barriers	List-II Examples
(A) Cytokine barriers	(IV) Interferons
(B) Physical barriers	(I) Mucus coating
(C) Cellular barriers	(III) Phagocytosis
(D) Physiological barriers	(II) Tears from eyes

Choose the correct answer from the options given below:

• (A) - (IV), (B) - (III), (C) - (I), (D) - (II)
• (A) - (II), (B) - (IV), (C) - (III), (D) - (I)
• (A) - (II), (B) - (I), (C) - (IV), (D) - (III)
• (A) - (IV), (B) - (I), (C) - (III), (D) - (II)

Answer 1

The Correct Option is D

Correct Matches: Innate Immunity Barriers 

Innate Immunity Barriers:

1. (A) Cytokine barriers - (IV) Interferons

Explanation: Interferons are cytokines produced by cells infected with viruses. They interfere with viral replication and signal to nearby cells to increase their antiviral defenses.

1. (B) Physical barriers - (I) Mucus coating

Explanation: Mucus coatings, such as those lining the respiratory and gastrointestinal tracts, physically trap pathogens, preventing them from entering the body's tissues.

1. (C) Cellular barriers - (III) Phagocytosis

Explanation: Phagocytosis is a cellular process where phagocytes (e.g., macrophages, neutrophils) engulf and destroy pathogens, clearing them from the body.

1. (D) Physiological barriers - (II) Tears from eyes

Explanation: Tears contain enzymes like lysozyme that degrade bacterial cell walls. The flushing action of tears also helps remove pathogens from the eye surface. Other physiological barriers include stomach acid and fever.

Answer 2

Correct Matches: Innate Immunity Barriers 

This document presents correct matches between types of innate immunity barriers and specific examples of those barriers.

Innate Immunity Barriers:

1. (A) Cytokine barriers - (IV) Interferons
2. (B) Physical barriers - (I) Mucus coating
3. (C) Cellular barriers - (III) Phagocytosis
4. (D) Physiological barriers - (II) Tears from eyes