Question

Why multicellular organisms require special organs for exchange of gases between their body and environment?

Answer 1

ANSWER :

A reason is that multicellular organisms need special organs for exchange of gases with the environment because of prokaryotic cells found in the body. The cells are not in contact with the environment and therefore diffusion would not work in the exchange of gases. The organs in the body therefore serve this purpose.

Answer 2

Explanation:

because of prokaryotic cells found in the body. The cells are not in contact with the environmentand therefore diffusion would not work in the exchange of gases. The organsin the body therefore serve this purpose.