In plants, water is transported through

1

(a)

xylem

(b)

phloem

(c)

stomata

(d)

root hair

The organ which controls the blood circulation in body is

1

(a)

Liver

(b)

Lungs

(c)

Heart

(d)

Kidney

The filtration of blood is done by

1

(a)

heart

(b)

kidney

(c)

blood

(d)

urethra

The colour of blood is red due to the presence of:

1

(a)

Chlorophyll

(b)

Haemoglobin

(c)

Oxygen

(d)

Carbon dioxide

The rhythmic expansion and contraction of the heart is called ____________.

1

(a)

heartbeats

_________ and _______ are removed along with water as sweat.

1

(a)

Salt, urea

Heart is located in the ___________.

1

(a)

chest cavity

Heart has four _________ called as chambers.

1

(a)

compartments

Blood is a__________which flows in the____________.

1

(a)

Fluid, blood vessels

Veins carry the blood rich in________.

1

(a)

Carbon dioxide

The vascular tissue for the transport of food in plants is called xylem.

1

(a) True

(b) False

Haemoglobin is the red colour pigment present in blood.

1

(a) False

(b) True

Kidney is a rounded structure used to filter the blood.

1

(a) True

(b) False

WBC protects the body from diseases.

1

(a) False

(b) True

Sweat is secreted by sweat glands, present in our skin.

1

(a) False

(b) True

Do you see the heart and the blood vessels?

1

(a)

No, we have seen these only in the picture.

Why do you think there; is throbbing?

1

(a)

Because blood vessel in there.

Do you hear a regular thumping sound?

1

(a)

Yes.

What are the components of blood?

1

(a)

Red blood cells, white blood cells, platelets and plasma.

Expand ECG.

1

(a)

Electrocardio Graph.

Name some useful products or materials that are carried by blood.

2

(a)

Name the organ which is located in the chest cavity with its lower tip slightly tilted towards the left.

2

(a)

State the function of valves?

2

(a)

What is the purpose of using stethoscope by doctors?

2

(a)

Human excretory system is depicted in the figure.

(a) Label the part 1, 2, 3 and 4
(b) Write the function of 1 & 3.

2

(a)

What will happen if there are no platelets in the blood?

3

(a)

What makes the blood look red?

3

(a)

Look at figure and draw another figure of the same set up as would be observed after a few hours.

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?

6

(a)

While riding a bike, Mason fell from it due to loss of balance. He got up and realised that he was bleeding from several wounds badly. He panicked and started to run but Mansi who was looking at him, stopped him and told him to clean his wound with a clean cloth and that blood will stop coming in a while. Mason noticed that he has stopped bleeding after sometime and a hard covering was appearing on his wounds.
(a) Why did the bleeding stop after a while?
(b) What is blood and what type of cells are responsible for clotting?
(c) What of values do you think Mansi have?

5

(a)

Label five parts (A to E) of heart and state their functions.

5

(a)