Question

Single celled microorganisms are sometimes called simple organisms why is this inaccurate

Answer 1

It is truth that most of the unicellular organisms like bacteria, are among the simplest life forms we know about it, but there are many other unicellular organisms, like amoebas, warnowiids and algae, that are far more complex. They can even have thousand of nuclei and be visible with the naked eye. Some amoeba actively hunt their pray, and some warnowiids even evolved and structure that functions like an eye; so even though unicellular, they are not simple organisms at all.

Answer 2

Answer:

Because the metabolism of microorganism is enough complex to not to be simple organism.

Explanation:

Microorganisms include bacteria, fungi, archaea, protists and viruses.

They all have nutrition systems, Energy metabolism, Replication system resembled to complex organism.

That's why it is inaccurate to call them simple organism.