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

cbse
cbse-class-7-science
trans-plants-animals

#1

Why is blood needed by all the parts of a body?
Answer:
Blood is needed by all parts of the body for transport of materials in the body. It performs the following important functions:

  • It transports 02 from the lungs to all the body cells.
  • It carries C02, a waste product back to the lungs so that it can be exhaled easily.
  • It transmits heat, thus regulating the body temperature.
  • It also fights off diseases and infections.