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प्रश्न
Differentiate the following.
Incisors and Canines
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उत्तर
| Incisors | Canines |
| Type of teeth used for cutting and biting foods. | Type of teeth used for tearing and piercing of food. |
APPEARS IN
संबंधित प्रश्न
Name the different types of teeth.
Say true or false.
Brush your teeth once a day.
Tick (✓) the foods that are good for your teeth and cross (x) the food that is bad for your teeth.
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Name the types of teeth present in an adult human being. Mention the functions of each.
Number of teeth present in each jaw is ______.
The crown of the tooth is covered by the hardest substance of the body called the ____________.
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 |
Label the below given Figure as directed below in (i) to (iv) and give the name of each type of teeth.
- 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 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.
Collect data from your friends, neighbours and classmates to know more about “milk teeth".
Tabulate your data. One way of doing it is given below:
| S.No. | Age at which first tooth fell | Age at which last tooth fel | No. of teeth lost | No. of teeth replaced |
| 1. | ||||
| 2. | ||||
| 3. | ||||
| 4. | ||||
| 5. |
Find out from at least twenty children and find the average age at which children lose the milk teeth. You may take help of your friends.
