CBSE Class 4 Science Our Food Teeth And Digestion Worksheet

I Fill in the blanks:-

1. Faeces are removed from the body through the .......................

2. There are usually 32 teeth in a ....................... set.

3. ....................... are harmful microbes that cause diseases.

4. The ....................... hold the teeth in their places.

5. The ....................... forms the central part of the tooth.

II Write the number and functions of the following kinds of teeth:-

1. Incisors: .......................

2. Canines: .......................

3. Premolars: .......................

4. Molars: .......................

III Give two examples for each of the following:-

1. Diseases caused by viruses. .......................

2. Diseases caused by bacteria. .......................

3. Diseases caused by protozoa. .......................

4. Diseases caused by fungi. .......................

IV Write one word for the following:-

1. The sticky, yellow layer on the teeth. .......................

2. The hard part below the enamel. .......................

3. Process by which food is broken down to a simpler form........................

4. An instrument through which microbes can be seen. .......................

5. The mineral important for strong teeth. ..........

............
V Write the following:-

1. Four ways to take care of your teeth:
.......................

2. Four healthy eating habits:
.......................

VI HOTS Question:-

1. Rohan quickly eats and gulps his food without chewing much. What change do you suggest Rohan on his way of eating and why?
Ans. .......................