Question

Which of the following cells are associated with immune system of body?

• A. Platelets
• B. WBC
• C. Macrophages
• D. RBC

Answer 1

Answer: (B), (C)

Macrophages

The correct option is B and C.

Explanation of the correct option :

Option B:

1. The white blood cells are from the cellular component of blood. It is present in the blood, tissue fluid, and lymph fluid.
2. The white blood cells phagocytize the bacteria (foreign pathogens) entering the body.
3. They are also responsible for producing antibodies that neutralize the harmful effects of germs.
4. These cells form an integral part of the immune system and function to protect the organism's body from diseases.

Option C:

1. Macrophages are white blood cells.
2. These surround and destroy germs, eliminate dead cells, and activate other immune system cells.

Explanation of the incorrect options :

Option A:

Platelets form the cellular component of the blood which is majorly responsible for the clotting of blood during certain injuries.

Option D:

1. Red blood cells present in the blood are the main component of blood. RBC contains hemoglobin which carries out oxygen.
2. As they circulate throughout the body, the gases are exchanged from all the parts of the body.

Final answer: WBC and macrophages both are associated with the immune system of the body