Prokaryotes:

(i) The organisms having prokaryotic cells are called prokaryotes.

(ii) In prokaryotes, there is no nuclear membrane in cells.

(iii) e.g., Bacteria and blue green algae.

Eukaryotes:

(i) The organisms have eukaryotic cells are called eukaryotes.

(ii) There is a nuclear membrane around the nucleus.

(iii) e.g., Onion cells and cheek cells.