Q 3. Explain the basis for grouping organisms into five kingdoms.
The basis for grouping organisms into five kingdoms are,
(i) Whether the organisms are made of prokaryotic or eukaryotic cells.
(ii) Whether the organism is unicellular, i.e, a cell living singly or organized into multicellular and thus complex organisms.
(iii) Whether the cells have a cell wall.
(iv) Whether they prepare their own food or get their food from outside.