What are microorganism??

.A microorganism is a living thing that is too small to be seen with the naked eye. .

Organisms which are too small that can not be seen with naked eyes are called microorganisms.

There are 5 major groups of organisms

I) Bacteria

ii) Fungi

iii) protozoa

iv) Virus

v) Algae

They can be seen with the help of microscope