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NDA 2019 GAT · General Knowledge · Human Physiology · easy

Which component of human blood is mainly responsible for clotting at the site of an injury?

Single correct option

Which component of human blood is mainly responsible for clotting at the site of an injury?
  1. A. Red blood cells
  2. B. Plasma proteins only
  3. C. White blood cells
  4. D. Platelets
Show answer and solution

Answer: (D) Platelets

Platelets are small cell fragments that gather at a wound and release substances that start the formation of a fibrin mesh, which traps cells and forms a clot. Red cells carry oxygen and white cells fight infection.
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Original question written in the NDA 2019 GAT pattern and checked twice for the correct answer. Not an official question paper. How we write and check questions · Corrections policy · Report a mistake