While learning to ride a bicycle Boojho lost his balance and fell. He got bruises on his knees and it started bleeding. However, the bleeding stopped after some time. (a) Why did the bleeding stop? (b) What would be the colour of the wounded area and why? (c) Which type of blood cells is responsible for clotting of blood?
ScienceClass 7CBSEAnswered 27 Mar 2026
Answer
Soln:
- The bleeding stopped due to formation of blood clots.
- Dark red due to clotting of blood.
- Platelets are responsible for clotting of blood.
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