Question

What is excretion? How do unicellular organisms remove their wastes?

Answer 1

Excretion is the process of removal of the waste, which was generated from the metabolic activities and production of energy, from the body of an organism. It is an essential process for all forms of life.

In unicellular organisms, since they do not have any specialized organs for the removal of waste materials, their wastes are removed directly through the cell membrane by the process of diffusion.