In which kingdom will you place an organism which is single-celled,eukaryotic,and photosynthetic?

What is the primary characteristic on which the broad division of organisms is made?

Will advanced organisms be the same as complex organisms? Why?

How do annelid animals differ from arthropods?

In the hierarchy of classification,which grouping will have the smallest number of organisms with maximum common characteristics and which will have the largest number of organisms?

Why do we classify organisms?