Question

Which one of the following solid components of blood helps in clotting of blood?

• A. Red cells
• B. Eosinophils
• C. Phagocytes
• D. Platelets

Answer 1

The correct option is D

Platelets

The correct option is D

Clotting of blood

1. Clotting of blood refers to the conversion of blood from a liquid to a solid-state when it gets exposed to air in case of a wound or injury.

Platelets

1. Platelets are fragments of certain types of cells that are produced in the bone marrow.
2. Platelets are anucleate, spherical, and smaller than white blood cells.
3. They release thromboplastins which initiate clotting of blood.
4. Thus platelets are the solid component of blood that helps in clotting of blood.

Explanation of incorrect options

Option A

1. Red blood cells (RBCs) are carriers of oxygen. Red blood cells carry oxygen from the lungs to all the cells of the body.

Option B

1. Eosinophils are a type of white blood cell (WBCs). They protect the body from pathogens by the method of phagocytosis.

Option C

1. Phagocytes are the type of cells that have the ability to surround or engulf to ingest, and sometimes digest, foreign particles, such as bacteria.