Question

What do you understand by the term microorganism?

Answer 1

Microorganisms are living organism that are too small that can't be seen through naked eyes.They are seen by a microscope.Microorganism may be a single celled or multicellular.
Some microorganisms are bacteria,virus, protozoa,etc.

Hope this will help u

Answer 2

Microorganisms are the organisms which can be seen through microscope but no t through naked eyes.