Question

Question 13 Explain the term thecodont and diphyodont.

Class - XI - Biology Chapter Digestion and Absorption Page No. 267

Answer 1

Thecodont means teeth are attached in bony socket of jaw......and diphyodont means we have two sets of teeth
1)temporary or milk teeth
2) permanent teeth

Answer 2

The term Thecodont and Diphyodont is explained below - Thecodont dentition is a dentition where tooth base is enclosed in socket of jaw bones.

Diphyodont means that organism will grow two sets of teeth in their lifetime i.e. they will grow teeths two times.

•Thecodont is seen in crocodiles, mammals and dinosaurs.

•Diphyodont is seen in mammals.

•The two sets are named as -

•First one is decidous

•They are weak in nature.

•Second set is permanent teeth.

•They are strong and durable.

•Decidous teeth are 20 in number.

Permanent teeth are 32 in number.

•Equal number of teeth are divided in both jaws, in both decidous and permanent.