'Diffusion pressure cannot deliver oxygen all over the body in bigger animals 'Comment on this statement. 

Asked by pdcavita | 1st Dec, 2017, 10:14: PM

Expert Answer:

The body structure of multicellular organisms such as humans is very complex. They comprise of specialized cells and tissues for performing various important functions of the body. Unlike the unicellular organisms, multicellular organisms are not in direct contact with surrounding environment. Therefore, simple diffusion will not meet the oxygen requirement of all the cells and tissues.

Answered by Sivanand Patnaik | 2nd Dec, 2017, 11:08: AM