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Form 3 Science DSKP Chapter 2 : Respiration

Total questions: 45

Worksheet time: 23mins

Name
Class
Date
1.

The table shows the percentage of three gases in inhaled and exhaled air . The percentage of oxygen gas decrease because it …

a)

is trapped in the heart

b)

is used in respiration

c)

is lost through transpiration

d)

flow through whole body

2.

What will happen when structure X contracts and become flattened?

a)

Air from outside enters the lung.

b)

The rib cage goes down and inwards.

c)

The Volume of thorax cavity decreases.

d)

Air pressure inside the thorax cavity increases

3.

The diagram shows the passage of air through the human respiratory system while exhaling. Which of the following represents X, Y, and Z?

a)
b)
c)
d)
4.

The diagram show a human respiratory system. Select the correct order of letters to show the flow during inhalation.

a)
b)
c)
d)
5.

The following statements are about the transportation of oxygen in the human body. Which of the following is the correct sequence of the transportation?

a)
b)
c)
d)
6.
Which step is implemented to prevent and control air pollution ?
a)
Use leaded fuel.
b)
Practice car-pooling system.
c)
Smoke in public places.
d)
Practice open burning.
7.

The diagram show a human respiratory system. What is P?

a)

Trachea

b)

Bronchus

c)

Bronchioles

d)

Alveolus

8.

The diagram show a human respiratory system. What is Q?

a)

Trachea

b)

Bronchus

c)

Bronchioles

d)

Alveolus

9.

The diagram show a human respiratory system. What is R?

a)

Trachea

b)

Bronchus

c)

Bronchioles

d)

Alveolus

10.

The diagram show a human respiratory system. What is S?

a)

Trachea

b)

Bronchus

c)

Bronchioles

d)

Alveolus

11.
Which gas is produces during human respiration?
a)
Oxygen
b)
Nitrogen
c)
Hydrogen
d)
Carbon Dioxide
12.
Which of the following is a disease of respiratory system?
a)
Anemia
b)
Diabetes
c)
Bronchitis
d)
Leukaemia
13.

What changes of the lime water can be observed in test tube B?

a)

Lime water turns cloudy

b)

Lime water does not change.

c)

Lime water volume decrease

d)

Lime water volume increase

14.

What changes of the lime water can be observed in test tube A?

a)

Lime water turns cloudy

b)

Lime water does not change.

c)

Lime water volume decrease

d)

Lime water volume increase

15.

Based on the diagram of the experiment, which gas jar has more oxygen?

a)

Gas jar X

b)

Gas jar Y

16.

Based on the diagram of the experiment, which candle will be extinguished first ?

a)

Gas jar X

b)

Gas jar Y

17.

The diagram show a model for mamallian respiratory system. Which can be represented by L ?

a)

Bronchus

b)

Lung

c)

Diaphragm

18.

The diagram show a model for mamallian respiratory system. Which can be represented by M ?

a)

Diaphragm

b)

Bronchus

c)

Lung

19.
Select the importance of this alveolus charcteristic : Moist inner surface
a)
To ease the respiratory gas to dissolve.
b)
To ease the gaseous exchange
c)
Increase the surface area for diffusion of gas.
d)
To provide a very short distance for the diffusion of gas
20.
Select the importance of this alveolus charcteristic : Surrounded by many blood capillaries
a)
To ease the respiratory gas to dissolve.
b)
To ease the gaseous exchange
c)
Increase the surface area for diffusion of gas.
d)
To provide a very short distance for the diffusion of gas
21.
Select the importance of this alveolus charcteristic : Has millions of alveolus
a)
To ease the respiratory gas to dissolve.
b)
To ease the gaseous exchange
c)
Increase the surface area for diffusion of gas.
d)
To provide a very short distance for the diffusion of gas
22.
Select the importance of this alveolus charcteristic : One cell thick/ Very thin wall
a)
To ease the respiratory gas to dissolve.
b)
To ease the gaseous exchange
c)
Increase the surface area for diffusion of gas.
d)
To provide a very short distance for the diffusion of gas
23.
Which of the following is a disease of respiratory system?
a)
Meningitis
b)
Bronchitis
c)
Hepatitis
d)
Conjunctivitis
24.
What is the chemical that cause addiction to smokers?
a)
Nicotine
b)
Tar
c)
Ammonia
d)
Carbon Monoxide
25.

Select the respiratory organ for the animal in the picture:

a)

Lungs

b)

Gills

c)

Moist Skin

d)

Tracheae

26.

Select the respiratory organ for the animal in the picture:

a)

Lungs

b)

Gills

c)

Moist Skin

d)

Tracheae

27.

Select the respiratory organ for the animal in the picture:

a)

Lungs

b)

Gills

c)

Moist Skin

d)

Tracheae

28.

Select the respiratory organ for the animal in the picture:

a)

Lungs

b)

Gills

c)

Moist Skin

d)

Tracheae

29.

Select the respiratory organ for the animal in the picture:

a)

Lungs

b)

Gills

c)

Moist Skin

d)

Tracheae

30.

The picture shows a structure that can be found abundantly at the bottom surface of a leaf. What is the name of the structure?

a)

Stoma

b)

Xylem

c)

Phloem

31.

The picture shows a structure that can be found abundantly at the bottom surface of a leaf. What is the function of the structure?

a)

Allow gas exchange into and out of the leaf

b)

Allow water vapor to be removed from the leaf

c)

Allow glucose to be removed from the leaf

d)

Allow nutrients to be absorbed into the leaf

32.

Based on the microscope image, determine when is the time when condition B occurs?

a)

7.00 am

b)

12.00 pm

c)

6.30 pm

d)

12.00 am

33.

What structure control the size of stoma?

a)

Guard Cell

b)

Epidermal Cell

c)

Xylem

d)

Phloem

34.

Select the respiratory organ for the animal in the picture:

a)

Lungs

b)

Gills

c)

Moist Skin

d)

Tracheae

35.

Select the respiratory organ for the animal in the picture:

a)

Lungs

b)

Gills

c)

Moist Skin

d)

Tracheae

36.

What is the process shown in the diagram?

a)

Inhalation

b)

Exhalation

37.

What happened to the pressure inside of lung during the process shown in the diagram?

a)

Pressure decrease

b)

Pressure increase.

38.

What is the process shown in the diagram?

a)

Inhalation

b)

Exhalation

39.

What happened to the pressure inside of lung during the process shown in the diagram?

a)

Pressure decrease

b)

Pressure increase.

40.

The diagram shows a model for human respiratory system. Which model A or B, represents the process of inhalation?

a)

A

b)

B

41.

The diagram shows a model for human respiratory system. Which model A or B, represents the process of exhalation?

a)

A

b)

B

42.

Which gas is produced during human respiration?

a)

Oxygen

b)

Nitrogen

c)

Hydrogen

d)

Carbon dioxide

43.

Diagram shows blood capillaries surrounding alveoli. What makes the concentration of oxygen low in alveolus?

a)

Oxygen diffuse into blood capillary.

b)

Carbon dioxide diffuse into blood capilary.

c)

Oxygen diffuse into alveolus

d)

Carbon dioxide diffuse into red blood cell

44.

Based on your observation from the GIF, which human system will be directly harmed ?

a)

Respiratory system.

b)

Digestive system.

c)

Excretory system.

d)

Reproductive system

45.

The picture shows a human activities. What happened to the amount of oxygen and carbon dioxide when all the trees in the forest are cut down?

a)

Oxygen : Increase

Carbon dioxide : Decrease

b)

Oxygen : Decrease

Carbon dioxide : Increase

c)

Oxygen : Decrease

Carbon dioxide : Decrease

d)

Oxygen : Increase

Carbon dioxide : Increase

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