Question

In single celled organisms diffusion is sufficient to meet all their requipment of food exchange of gases excertion of waste but this not in case of multi
cellular organisms explain the reason for this difference​

Answer 1

Answer:

Multicellular organisms are more complex than unicellular organisms

Multicellular organisms need different organs to perform different kinds of functions

for example: digestive system to digest food and excretory system to excrete

That is not the case in unicellular organisms because they have only one cell to perform all the functions

hope it helps