Question:

In human body antibodies are produced by

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Blood cells:
• RBC (Erythrocytes) $\rightarrow$ Oxygen transport.
• WBC (Lymphocytes) $\rightarrow$ Produce antibodies.
• Platelets $\rightarrow$ Blood clotting.
Updated On: Jul 15, 2026
  • Erythrocytes
  • Monocytes
  • Granulocytes
  • Lymphocytes
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The Correct Option is D

Solution and Explanation

Concept: Antibodies are proteins produced by B-lymphocytes (a type of white blood cell) to protect the body against harmful pathogens.

Step 1:
Identify the function of each cell.

• Erythrocytes -- Transport oxygen.
• Monocytes -- Engulf pathogens by phagocytosis.
• Granulocytes -- Defend against infections.
• Lymphocytes -- Produce antibodies and provide immunity. \checkmark

Step 2:
Final conclusion.
Therefore, antibodies are produced by \[ \boxed{\text{Lymphocytes}.} \]
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