Question

Which of the following are lophodont?
A. Incisor and Canine
B. Premolar and Molar
C. Canine and Premolar
D. Premolar and Incisor

Answer 1

Hint: As we know that in this question they are asking about lophodont. Lophodont is a type of dentition found in different animals. There are different types of dentition on the basis of attachment of teeth, type of teeth in the jaw bone, type of molar and premolars – which are a type of teeth, etc. lophodont is one of the categories in type of molar and premolars.

Complete solution:
We have classification of teeth on basis of
 Attachment of teeth – on this basis we classify teeth into acrodont, pleurodont and thecodont
 Succession of teeth – on this basis we classify teeth into monophyodont, diphyodont and polyphyodont.
 Types of check teeth – on this basis we classify teeth into bunodont, lophodont, selenodont.
Type of teeth in a jaw - – on this basis we classify teeth into homodont and Heterodont.
LOPHODONT are a type of cheek teeth – i. e. molars and premolars (these are called cheek teeth) in which the teeth have one cusp with elevated and transverse ridges present between the cusps. Such ridges are called ‘lophos’
These kinds of teeth are found in elephants, rabbits, rhinoceroses, etc.
BUNODONT: cheek teeth with small, blunt cusps. They are found in man, monkeys etc.
SELENODONT: cheek teeth with vertical crescentic cusps. These types of teeth are found in grazing animals

So, the correct answer is option B.

Note: Type of teeth - molars and premolars are cheek teeth and on the basis of cheek teeth we have lophodont as one of the types of teeth; so children do not get confused as one has to remember which teeth are cheek teeth.
Also remember that there is no classification on the basis of different types of incisors and canines. Hence the other options which have incisors and canines are not the correct answer for this question.
Main important point to remember here is what cheek teeth are and what are its types.