Fat is completely digested in the

1

(a)

stomach

(b)

mouth

(c)

small intestine

(d)

large intestine

Water from the undigested food is absorbed mainly in the

1

(a)

stomach

(b)

foodpipe

(c)

small intestine

(d)

large intestine

Which of the following pair of teeth differ in structure but are similar in function?

1

(a)

Canines and incisors

(b)

Molars and premolars

(c)

Incisors and molars

(d)

Premolars and canines

The acid present in the stomach

1

(a)

kills the harmful bacteria that may enter along with the food

(b)

protects the stomach lining from harmful substances

(c)

digests starch into simpler sugars

(d)

makes the medium alkaline

Cud is the name given to the food of ruminants which is

1

(a)

swallowed and undigested

(b)

swallowed and partially digested

(c)

properly chewed and partially digested

(d)

properly chewed and completely digested

The tip or front of tongue taste

1

(a)

sour

(b)

bitter

(c)

salt and sweet

(d)

All of these

The main steps of nutrition in humans are _____, _____, _____, ______ and _____

1

(a)

ingestion, digestion, absorption, assimilation and egestion

The stomach releases hydrochloric acid and _____ juices which act on food.

1

(a)

digestive

Ruminant can digest cellulose (carbohydrate).

1

(a) False

(b) True

Canines are used for grinding of food.

1

(a) True

(b) False

What is the total number of teeth in an adult human?

2

(a)

You were blindfolded and asked to identify the drinks provided in two different glasses. You could identify drink A as lime juice and B as bitter gourd juice. How could you do it inspite of being blindfolded?

2

(a)

We should not eat hurriedly. Give reason.

2

(a)

Suggest the organ of digestive system where the digestive juices from liver and pancreas is poured.

2

(a)

What is assimilation?

2

(a)

Write the shape of stomach.

2

(a)

Where is the bile produced? Which component of the food does it help to digest?

3

(a)

Why do we get instant energy from glucose?

3

(a)

Write one similarity and one difference between nutrition in Amoeba and human beings.

3

(a)

Can we survive only on raw, leafy vegetables/grass? Discuss.

3

(a)

Name the various components of food and their simpler forms.

3

(a)

Discuss the various associated glands of digestive system and their role in digestion.

3

(a)

Label the given figure as directed below in A to D and give the name of each type of teeth.
(a) The cutting and biting teeth as A
(b) The piercing and tearing teeth as B
(c) The grinding and chewing teeth as C
(d) The grinding teeth present only in adult as D.

5

(a)

Label the following parts of above figure and name them.
(a) The largest gland in our body.
(b) The organ where protein digestion starts.
(c) The organ that releases digestive juice into the small intestine.
(d) The organ where bile juice gets stored.

5

(a)