Identify the location of salivary gland.

2

(a)

Explain the role of mucus secreted by stomach.

2

(a)

Name the simple forms of carbohydrates, fats and proteins.

2

(a)

Do you know the functions of the tongue?

2

(a)

Now write down your observations and label Fig.

2

(a)

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

2

(a)

Paheli wants to know why these animals cannot chew food properly at the time they take it in?

2

(a)

Name the various digestive organs of human.

2

(a)

Explain the mode of feeding of starfish.

2

(a)

What is large intestine? Write its function.

2

(a)

What are milk teeth and permanent teeth?

2

(a)

What is a food pipe? Write its functions.

2

(a)

What happens when the food pushed by the food pipe is not accepted by the stomach?

2

(a)

How does food move in opposite direction during vomiting?

2

(a)

Why does a doctor put a glucose drip to a patient who has just been operated?

2

(a)