Water from the undigested food is absorbed mainly in the

1

(a)

stomach

(b)

foodpipe

(c)

small intestine

(d)

large intestine

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

The finger-like outgrowths of Amoeba helps to ingest food. However, the finger-like outgrowths of human intestine helps to

1

(a)

digest the fatty food substances

(b)

make the food soluble

(c)

absorb the digested food

(d)

absorb the undigested food

_____ is the process of taking food inside the body.

1

(a)

Ingestion

Amoeba digests its food inside _____

1

(a)

food vacuole

_____ is the long tube-like structure which constitutes digestive organs and associated glands.

1

(a)

Alimentary canal

Oesophagus is also called as foodpipe.

1

(a) False

(b) True

Canines are used for grinding of food.

1

(a) True

(b) False

Diarrhoea can be treated by only giving water to the patient.

1

(a) True

(b) False

Which teeth do you use for biting and cutting?

1

(a)

The incisors

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)

Record your observations

2

(a)

Can you guess what the role of villi could be in the intestine?

2

(a)

Which part of the digestive canal is involved in
(a) absorption of food 
(b) chewing of food
(c) killing of bacteria
(d) complete digestion of food
(e) formation of faeces

3

(a)

Label the given figure of the digestive system.

3

(a)

Write the difference between milk teeth and permanent teeth.

3

(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)