Teeth and digestion

A baby has (a)   Milk teeth when she / he is 3 years

When does the temporary teeth start to fall ?

• At the age of three

• At the age of 5

• At the age of 4

• At the age of 6

State all the ways to preserve food .

(a)   helps us to get rid of the undigested food .

Pulp is present inside the _________ .

• Dentine

• Enamel

• Neck

• Root

Chillies are preserved by _________ .

• Boiling

• Freezing

• Adding preservatives

• Drying

Why is exercising important ? Tell the answer in 2 sentences .

Answer explanation

They keep us fit and healthy. If we do not exercise we will become lazy and unfit .

Diseases such as typhoid are caused due to viruses

• True

• False

Name any four kinds of microbes

Answer explanation

Answer : Bacteria , Virus , Protozoa , Fungi

Juices secreted by the ______ , ______ and ________ enter into the intestine to complete the process of digestion .

• Small intestine

• Stomach

• Pancreas

• Liver