Match List-I with List-II
| Immunity barriers | Examples |
|---|---|
| (A) Physical barriers | (I) Interferons |
| (B) Cellular barriers | (II) Acid in the stomach |
| (C) Cytokine barriers | (III) Skin |
| (D) Physiological barriers | (IV) WBCs |
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (A) - (III), (B) - (IV), (C) - (I), (D) - (II)
(A) Physical barriers — this matches (III) Skin. Skin is the main barrier that stops microbes from entering; mucus of the body passages also traps them.
(B) Cellular barriers — this matches (IV) WBCs. Neutrophils, monocytes, natural killer cells and macrophages phagocytose and destroy microbes.
(C) Cytokine barriers — this matches (I) Interferons. Virus-infected cells secrete interferons, which protect healthy cells from the virus.
(D) Physiological barriers — this matches (II) Acid in the stomach. Stomach acid, saliva and tears stop microbes from growing.
Note: A similar question was also asked in CUET (UG) 2025 on 28-05-2025 (Slot 1).