Question

Match List-I with List-II:

List-I	List-II
(A) IgA	(i) Basophils
(B) IgE	(ii) Secretory components
(C) IgG	(iii) Pentamer
(D) IgM	(iv) Crosses Placenta

Choose the correct answer from the options given below:

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

Hint:

IgA is found in secretions, IgE is involved in allergy, IgG is the most abundant antibody in the blood, and IgM is produced first during an immune response. Understanding the function of each will help to distinguish them based on their properties.

Answer 1

The Correct Option is C

Specific roles of immunoglobulins:
• IgA: Located in mucosal secretions and associated with secretory components.
• IgE: Activates basophils and mast cells in allergic reactions.
• IgG: Crosses the placenta, providing fetal immunity.
• IgM: The first antibody in an immune response, existing as a pentamer.
Therefore, the correct answer is: (A) - (II), (B) - (I), (C) - (IV), (D) - (III)