Question

which do you think is a most basic characteristics for classification of organisms.
(a)The place where they live . (b) The kind of cells they are made of. why​

Answer 1

The basic characteristic for all living organisms is the kind of cells they are made of. This is because :

(i) All eukaryotic cells have membrane-bound organelles. These have a nucleus which controls the cellular processes to be carried out systematically.

(ii) These cells grow and become multicellular organisms and take up their specific functions.