Question

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

• A. Diphyodont, heterodont and thecodont
• B. Diphyodont, thecodont and heterodont
• C. Thecodont, diphyodont and heterodont
• D. Thecodont, heterodont and diphyodont

Answer 1

The correct option is B Diphyodont, thecodont and heterodont

In mammals, teeth are diphyodont, thecodont and heterodont.

An animal is called diphyodont when only two sets of teeth are present throughout the life, initially the deciduous set and consecutively the permanent set which is seen in mammals.

An animal is called thecodont when the teeth are embedded in a socket of bone, which is found in the mammals.

An animal is called heterodont when different types of teeth like incisors, canines, premolars, and molars are present.

So, the correct answer is (B).