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Buccal Cavity

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Question 26
Label the below given Figure as directed below in (i) to (iv) and give the name of each type of teeth.

i) The cutting and biting teeth as ‘A’
ii) The piercing and tearing teeth as ‘B’
iii) The grinding and chewing teeth as ‘C’
iv) The grinding teeth present only in adult as ‘D’

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Solution

A. Incisors
B. Canines
C. Premolars
D. Molars

Teeth are present in the buccal cavity. The complex food substances are broken down into simpler substances with the help of teeth. The teeth help in chewing and grinding the food. There are four types of teeth, they are incisors, canines, premolars and molars. Incisors are known as the cutting and biting teeth. Canines are the piercing and tearing teeth. Premolars are the grinding and chewing teeth. Molars are the grinding teeth present only in an adult.

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Q. Question 26
Label the below given Figure as directed below in (i) to (iv) and give the name of each type of teeth.

i) The cutting and biting teeth as ‘A’
ii) The piercing and tearing teeth as ‘B’
iii) The grinding and chewing teeth as ‘C’
iv) The grinding teeth present only in adult as ‘D’

Q. Match the following:

\begin{matrix} Types of Teeth & Functions i) Incisors & A) Piercing and tearing ii) Canines & B) Grinding food iii) Premolars & C) Cutting and biting iv) Molars & D) Crushing food \end{matrix}

Teeth, that are a part of the buccal cavity, help in the mechanical breakdown of food.

The given illustration depicts the type of teeth present in the mouth.

The teeth that perform the function of piercing and tearing are labelled as

Q. Study the following passage:
Most of the vertebrates have jaws with teeth. The mode of arrangement of teeth on the jaws is called dentition.
The various types of teeth seen in mammals are incisors (I) canines (C) premolars (P) and molars (M). They are used for biting, tearing, chewing and grinding, respectively.
Canines, the tearing teeth are well-developed in carnivores and ill-developed or absent in herbivores.

Now answer the following:
(i) In frogs, all the teeth in the upper jaw look-alike, whereas in human beings they are different. The type of dentition in human beings can be called .........
(a) Homodont (b) Isodont (c) Heterodont (d) Acrodont
(ii) The dental formula of a mammal is written as ICPM=2023/1023. The teeth missing in it are ................
(a) Incisors (b) Canines (c) Premolars (d) Molars

Q. The teeth which help us in chewing and grinding the food we eat are?

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Standard VII Biology

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