On what basis are plants and animals put into different categories?
Plants and animals are put into different groups on the basis of whether the organisms produce their own food through process of photosynthesis (plants) or organisms get food from outside (animals).
Will advanced organisms be the same as complex organisms? Why?
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.
What is the primary characteristic on which the first division of organism is made?
