Digestion & Role of Microbes

There are ____ permanent teeth in our mouth.

• 25

• 30

• 32

• 20

Which one statement among the following is not correct about incisors?

• There are 4 incisors in each jaw in humans.

• They are front teeth.

• They are cutting and biting teeth.

• They are crushing teeth

The soft part of the tooth which has blood vessels is:

• Dentine

• Pulp

• Enamel

• Root

Which one among the following is a cause of tooth decay?

• Regular brushing.

• Eating food that are high in sugar.

• Flossing

• Visiting a dentist after every 6 months.

A sticky coating formed by bacteria on teeth is

• Decay

• Enamel

• Plaque

• Saliva

The microorganism which is used for making bread.

• Protozoa

• Fungi

• Bacteria

• Virus

Match the following:

[A] Fungi (I) Malaria

[B] Bacteria (II) Polio

[C] Protozoa (III) Ringworm

[D] Virus (IV) Tuberculosis

• (A - III), (B - II), (C - IV), (D - I)

• (A - III), (B- IV), (C - I), (D - II)

• (A - IV), (B - III), (C - II), (D - I)

• (A - II), (B - I), (C - IV), (D - III)

____ are disease causing microbes.

• Antibiotic

• Malaria

• Dysentery

• Germs

What would happen if small intestines is removed from the digestive system?

• our body will not be able to absorb water from undigested food.

• our body will not be able to absorb nutrients from food.

• our body will not be able to crush and grind the food.

• none of the above

Liver and pancreas pour their juices into:

• Small Intestine

• Large Intestine

• Food pipe

• Mouth