LS-2 Digestion and role of microbes

The first set of teeth that appears when a child is 2 and half year old is called

• Temporary teeth

• Permanent teeth

The teeth meant for cutting and biting the food is called

• Incisors

• Canines

• Premolars

The number of molars present in adult human teeth is

• 12

• 8

• 6

_______________ is a part of tooth and is the hardest substance in the human body.

• Enamel

• Dentine

• Pulp

This is the soft part of the tooth which consists of blood vessels and nerves

• Pulp

• Enamel

• Dentine

The sticky yellow layer formed on the tooth is called

• Cavities

• Plaque

• None of these

The process of digestion starts in

• Stomach

• Small intestine

• Mouth

The part of the digestive system , where all the useful nutrients are absorbed by the blood and is taken to all parts of the body.

• Large intestine

• Small intestine

• Stomach

These are the diseases which are caused by virus

• Typhoid, Tuberculosis

• Influenza ,Flu

• food poisoning , malaria

These are the diseases caused by bacteria

• Typhoid , Tuberculosis

• Ringworm ,athlete's foot

• Common cold ,polio