Question

Study the Column-I, II and III and select the CORRECT option by referring the given code.  

Column-I	Column-II	Column-III
Neutrophils	a	Phagocytic
Eosinophils	$3\%$	b
c	$25\text{--}33\%$	Synthesis of antibodies
Basophils	$0\text{--}5\%$	d

• A. $a = 54\text{--}62\%,\; b = \text{Secrete antihistamine},\; c = \text{Lymphocytes},\; d = \text{Secrete heparin}$
• B. $a = 30\text{--}38\%,\; b = \text{Phagocytic},\; c = \text{Platelets},\; d = \text{Non-phagocytic}$
• C. $a = 20\text{--}25\%,\; b = \text{Non-phagocytic},\; c = \text{Erythrocytes},\; d = \text{Non-phagocytic}$
• D. $a = 43\text{--}49\%,\; b = \text{Secrete histamine},\; c = \text{Monocytes},\; d = \text{Phagocytic}$

Hint:

Neutrophils are the most abundant WBCs and are the first line of defense.

Answer 1

The Correct Option is A

Step 1: Understanding leukocyte distribution.
Different types of white blood cells vary in percentage and function in human blood.
Step 2: Matching Column-I and Column-II.
Neutrophils constitute about 54–62% of total leukocytes.
Eosinophils are present in about 3%.
Lymphocytes constitute about 25–33%.
Basophils are present in 0–5%.
Step 3: Matching Column-III (functions).
Neutrophils are phagocytic.
Eosinophils secrete antihistamine.
Lymphocytes are involved in synthesis of antibodies.
Basophils secrete heparin.
Step 4: Conclusion.
The correct matching corresponds to option (A).