Air And The Respiratory System - SAP Education

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P5/6 science

Air And The Respiratory System

Taken from Nail thoSe McQs! PriMary ScieNce UPPer Block 5/6SAPSCSP5&6_W11

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1. Study the classification table below.

Breathing methods

Breathing tubes Skin

water stick insectwrigglertadpole

toadflatworm

salamander

Which of the following animals has been grouped wrongly?(1) water stick insect(2) tadpole(3) flatworm(4) salamander ( )

2. Which of the following correctly shows the path of oxygen in the human body when a person breathesin?(1) nose → windpipe → heart → other parts of the body(2) nose → windpipe → lungs → heart → other parts of the body(3) nose → gullet → windpipe → heart → other parts of the body(4) other parts of the body → heart → lungs → windpipe → nose ( )

3. The pie chart below shows the composition of air in the atmosphere.

Which one of the following shows the composition of exhaled air?(1) (3)

(2) (4)

( )

oxygen (21%)

carbon dioxide and other rare gases

(1%)

nitrogen(78%)


(10%)

nitrogen(90%)

oxygen (18%)


(12%)

nitrogen(70%)

oxygen (8%)


(14%)

nitrogen(78%)

oxygen (15%)


(7%)

nitrogen(78%)


P5/6 science



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4. Which of the following activities will cause a drop in the amount of carbon dioxide in the surroundingair?(1) A boy cycling on his bike(2) A balsam plant making food(3) A man burning some logs(4) A girl taking an afternoon nap ( )

Answers: 1. 2 2. 2 3. 3 4. 2


P5/6 science



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1. The diagram below shows the human respiratory system.

A

BC

Based on the diagram given, which of the following statements are correct?A. Part A allows air to enter and leave the body.B. Part B allows the passage of air to the lungs.C. Part B traps the dust and bacteria from entering the lungs.D. Part C contains tiny air sacs which have a rich supply of blood vessels.

(1) A and B only(2) A, B and C only(3) A, B and D only(4) A, B, C and D ( )

2. Look at the flow chart below.

through through

Gaseous exchange

Plants Humans

X Y

Which of the following represent X and Y correctly?

X Y

(1) stomata nose

(2) lungs stomata

(3) roots nose

(4) stomata lungs ( )


P5/6 science



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3. Which one of the following diagrams shows the exchange of gases between living organisms andtheir surroundings during the day?(1)

oxygen

carbon dioxide

animals plants

(3)oxygen

carbon dioxide

animals plants

(2) oxygen

carbon dioxide

animals plants

(4) oxygen

carbon dioxide

animals plants

( )

Answers: 1. 4 2. 4 3. 4


P5/6 science


SAPSCSP5&6_W11/8

Taken from Nail thoSe McQs! PriMary ScieNce UPPer Block 5/6

1. The model below shows how the respiratory system works.

balloon

rubber sheet

rubber tube bell jar

Which parts of the human body are represented by the rubber tube and sheet?

Rubber tube Rubber sheet

(1) windpipe lungs

(2) windpipe diaphragm

(3) gullet stomach

(4) lungs diaphragm ( )

2. The diagram below shows how carbon dioxide is given out or taken in during the processes, A, Band C.

animals carbon dioxide plantsA B

C

Which of the following correctly identify the processes, A, B and C?

A B C

(1) Respiration Photosynthesis Respiration

(2) Respiration Respiration Photosynthesis

(3) Photosynthesis Respiration Photosynthesis

(4) Photosynthesis Photosynthesis Respiration( )


P5/6 science

3. The diagrams below show the respiratory systems of a human and a fish.

AB

C

F

EG

human fish

Which parts of the respiratory system of the human and of the fish allow the exchange of gases to take place?

Human Fish

(1) A E

(2) B F

(3) C G

(4) A G( )


Answers: 1. 2 2. 1 3. 3

SAPSCSP5&6_W11/8

Taken from Nail thoSe McQs! PriMary ScieNce UPPer Block 5/6


P5/6 science

Air and the Respiratory System

SAPSCSP5&6_W11/8

Taken from ScieNce ProceSS SkillS UPPer Block 5/6

1. The bar below represents the amounts of different gases in the air we breathe in.

(a) Complete the key below by identifying the gases. The last one has been done for you. [1m]

(b) Complete the bar below to represent the amounts of the same gases present in the air we breatheout. [1m]

(c) Explain how the amount of each gas changes and the reason for the change. [4m]

:

:

:

:

(d) Which body system is responsible for gaseous exchange? [1m]

Key:

other gases


P5/6 science

Air and the Respiratory System

SAPSCSP5&6_W11/8

Taken from ScieNce ProceSS SkillS UPPer Block 5/6

(e) In the diagram below, label the four main parts of the system you have mentioned in (d). [2m]

(f) The part labelled (iv) has numerous air sacs inside it. These air sacs help to increase the surfacearea. Why do you think a large surface area is necessary? [1m]

(i)

(ii) (iii)

(iv)

air sacs

Answers: 1. (a) : nitrogen : oxygen : carbon dioxide

1. (b)

1. (c) : The amount of nitrogen gas remains the same because no nitrogen is used during breathing. All the nitrogen that is taken in by the body is given out. : The amount of oxygen decreases because some oxygen has been taken in by the body during breathing. : The amount of carbon

dioxide increases because some carbon dioxide has been given out by the body during breathing. : The amount of other gases, which includes water vapour, increases slightly because water vapour is given out by the body during breathing. 1. (d) It is the respiratory system. 1. (e) (i) nose (ii) mouth (iii) windpipe (iv) lungs 1. (f) A large surface area enables gaseous exchange to take place more efficiently. More oxygen can be absorbed into the bloodstream quickly and more carbon dioxide can be released out of the body quickly too.

Air And The Respiratory System - SAP Education

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