Question

Which one helps to form blood clot during injury?
a RBC
b Platelets
c WBC
d Haemoglobin

Answer 1

Hey Mate !!

Thanks for the question.

The correct answer is - $\textbf{Platelets}$


$\textbf{EXPLANATION:}$

1) When the blood flows out from the wounded place, then Platelets release an enzyme called " Thrombokinase."

2) Thrombokinase acts on another substance present in the blood called Prothrombin which converts into Thrombin.

3) Thrombin acts on another substance called fibrin, that is present in dissolved state converting it into insoluble fibrin.

4) The blood cells entangle in the fibrin fibers forming clot.

5) The fibrin fibres are attached to the edges of wound and stop the flow of blood.

HOPE THIS HELPS U...