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प्रश्न
Name the different types of teeth. What is the function of each type?
उत्तर
There are 4 types of teeth that are found in humans:
- Incisors are the teeth present at the front portion of the mouth. There are four incisors in each jaw. They are used for biting and cutting food.
- Canines are located next to the incisors. There are two canines in each jaw. They are used for tearing and piercing food.
- Premolars lie next to the canines. There are four premolars in each jaw. They are used for chewing and grinding food.
- Molars lie next to the premolars at the end of the jaw. There are six molars in each jaw. They are also used for chewing and grinding food.
संबंधित प्रश्न
Say true or false.
Brush your teeth once a day.
List out the food items for healthy mouth and teeth.
Number of teeth present in each jaw is ______.
Match the Column I with Column II and select the correct option.
| Column I | Column II |
| i. Heterodont | a. Teeth embedded in separate sockets in jaw bone |
| ii. Diphyodont | b. Four sets of teeth |
| iii. Thecodont | c. Two sets of teeth in lifetime |
Name the four types of the permanent teeth.
How do you take care of your mouth and teeth?
Teeth are rooted in separate ______ in between the ______.
Label the below given Figure 2.1 as directed below in (i) to (iv) and give the name of each type of tooth.
- The cutting and biting teeth as ‘A’
- The piercing and tearing teeth as ‘B’
- The grinding and chewing teeth as ‘C’
- The grinding teeth are present only in adults as ‘D’
Open your mouth, look into a mirror and try to count the different types of teeth in your mouth. Compare them with Figure 2.3 on page 13 of your NCERT textbook. Record your observations in the table below:
| Type of teeth | Number of teeth | |
| In my mouth | In the figure | |
| Incisors | ||
| Canines | ||
| Premolars | ||
| Molars | ||
- Did you observe any difference in the number of teeth? If yes, could you identify which type of teeth showed the difference?
- Compare the number and type of teeth in an adult (say your parents or cousins who have reached the age of 25-30 or more). Note your observation.
Write a note on the teeth of humans.
