Question

What is the primary characteristic on which the first division of organisms is made? Also tell the primary characteristic on which the broad division of organisms is made.

Answer 1

The primary characteristic on which the first division of organisms is made is the nature of the cell.

It is considered to be the fundamental characteristic for Classifying all living organisms. Nature of the cell includes the presence or absence of membrane-bound organelles. Therefore, on the basis of this fundamental characteristic, we can Classify all living organisms into two broad categories of eukaryotes and prokaryotes.

The broad classification was made primarily on basis of cellular modes of nutririon.

So, answer of 2nd part is modes of nutririon.