Name the tissues of a plant which carries
(a) water and minerals from roots to the leaves.
(b) food from the leaves to the other parts of the plant.

3

(a)

(a) Name the only artery that carries carbon dioxide-rich blood.
(b) Why is it called an artery if it does not carry oxygen-rich blood?

3

(a)

What is the relation between the rate of heartbeat and pulse rate? If a pulse rate of an athlete is 96/min, what will be the number of his heartbeat at the same time?

3

(a)

Give one function of each of the following organs.
(a) Blood vessels
(b) Kidney
(c) Blood platelets
(d) Heart.

3

(a)

How is transpiration and translocation different from each other.

3

(a)

Make a table depicting the function of all chambers of the human heart.

3

(a)

The given diagram is of human excretory system. Label the marked parts of it.

3

(a)

Why plants absorb a large quantity of water from the soil, then give it off by transpiration?

3

(a)

The major function of the arteries is to carry to oxygenated blood throughout the body and that of veins is to carry deoxygenated blood from body parts to heart for purification. There is one artery that carries deoxygenated blood and one vein that carries oxygenated blood. Name the artery and vein.

3

(a)

What is the special feature present in a human heart which does not allow mixing of blood when oxygen-rich and carbon dioxide-rich blood reach the heart?

3

(a)

Name the three types of blood cells and give their functions.

3

(a)

Describe in brief, how water is absorbed and transported in a tall tree.

3

(a)

What is transpiration? What is its significance?

3

(a)

Describe the course of circulation of blood in our body with the help of a flow chart.

3

(a)

Describe the functions of blood.

3

(a)