9. Why is blood needed by all the parts of a body?

Answers (1)
D Divya Prakash Singh

Blood is needed by all parts of the body because it is an important part of the transport system of our body and performs the following these important functions:

(i) Transports oxygen from the lungs to all the body cells.

(ii) Carries carbon-dioxide, waste products back to the lungs so that it can be exhaled easily.

(iii) Blood fights against diseases and infections.