What is the primary characteristic on which the first division of organism is made?
The primary characteristic on which the first division of organisms is made is the organisation of nucleus. Whether organism has eukaryotic cell i.e., membrane-bound organelle, including nucleus or has prokaryotic cell i.e., has no clearly demarketed nucleus and membrane-bound organelles.
Which organisms are called primitive and how are they different from the so-called advanced organisms?
Give three examples of the range of variations that you see in life form around you.
On what basis are plants and animals put into different categories?
Will advanced organisms be the same as complex organisms? Why?
