Q. In mammals, the teeth are
I. only two sets, present throughout life.
II. embedded in the socket of the jaw bones.
III. different types.
These conditions are respectively referred as

 1905  177 AIIMSAIIMS 2016 Report Error

Solution:

Most of the mammals have diphyodont (teeth grow in two sets; temporary or milk teeth and permanent teeth), thecodont (teeth are embedded in the socketes of the jaw bones) and heterodont teeth(teeth are four types, i.e. incisors, canines, premolars and molars).