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

1.	Why is blood needed by all the parts of a body?
Answer» Blood is needed by all parts of the body as it is an important part of the transport system of our body. It performs the following important functions : (i) It transports O₂ from the lungs to all the body cells. (ii) It carries CO₂, a waste product back to the lungs, so that it can be exhaled easily. (iii) It transmits heat, thus regulating the body temperature. (iv) It also fights off diseases and infections.

Answer»

Blood is needed by all parts of the body as it is an important part of the transport system of our body.

It performs the following important functions :

(i) It transports O₂ from the lungs to all the body cells.

(ii) It carries CO₂, a waste product back to the lungs, so that it can be exhaled easily.

(iii) It transmits heat, thus regulating the body temperature.

(iv) It also fights off diseases and infections.

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