Hands-on Science Workbook Primary 5 (Chapter 02)

Chapter Air, Our Body
Systems and the
2 Plant Transport
System
2.1 Air

1 The diagram below shows the percentage of gases in the air. Label the correct
types of gases according to their percentage.

GAS PERCENTAGE

21% (b)

1%

(a) 78%

(c)

2.2 Respiratory System

2 The diagram shows the organs involved in the human respiratory system.
Label the respiratory organs correctly and fill in the blanks with the function of
the organ.

(a)
(b)

(c)

8 Primary 5
Hands-on Science

3 Label the animals with their respiratory organs correctly. Lungs and skin
Skin Lungs Gills Openings in the body

af

bg

ch
di
ej

Chapter 2 9
Air, Our Body Systems and the Plant Transport System

2.3 Circulatory System

4 Match the parts of the circulatory system to their correct statements.

(a) (i) Carries blood from the heart to all
parts of the body

Heart (ii) Transports nutrients, oxygen and
water to all parts of the body
(b)
(iii) Made of cardiac muscles

(iv) Removes waste materials such as
carbon dioxide from the human body

Blood vessel (v) Pumps blood continuously to all
parts of the body
(c)
(vi) The main organ in the circulatory
system

Blood cell (vii) Carries blood from other parts of the
body to the heart

2.4 Transport System in Plants

5 Fill in the blanks with the correct answers.

(a) The hold the plants firmly in the soil.

(b) The holds up the flowers, fruits and seeds.

(c) The absorb water and minerals from the soil.

(d) The transport water and minerals from the

roots to the leaves to make food for the plants.

(e) The transport the food produced by the

leaves to other parts of the plant.

(f) The food is stored in the of the plant before being used to
carry out other functions.

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Hands-on Science

Objective Questions

Choose the best answer.

1 The table shows the percentage of What is the function of this system?
different types of gases in the air. A Breaking down food into

Gas Percentage (%) smaller particles
X1 B Transporting oxygen, water
Y 21
Z 78 and nutrients to the whole
body
What are represented by X, Y and C Taking in oxygen and giving
Z? out carbon dioxide
D Removing waste products
from the body

XYZ 3 Which of the following animals has

A Oxygen Nitrogen Carbon only one respiratory organ?
dioxide
A Salamander C Worm

B Nitrogen Carbon Oxygen B Frog D Newt
dioxide
4 The diagram below shows an
C Carbon Oxygen Nitrogen animal.
dioxide

D Nitrogen Oxygen Carbon
dioxide

2 The diagram below shows a Which of the following animals has
human body system. the same respiratory organ as the
animal above?

AC

Lung B D

Chapter 2 11
Air, Our Body Systems and the Plant Transport System

5 The diagram below shows an 8 What materials are transported by
investigation. water-carrying tubes in plants?
I water
Grasshopper II minerals
III sugar
Water IV air
A I and II
A grasshopper is alive when its B I and III
head is submerged in the water. C II and III
Why does this happen? D III and IV
A The grasshopper breathes
9 What is the function of food-
through gills. carrying tubes in plants?
B The grasshopper breathes A To transport water from the
roots to the leaves of the plant
through lungs. B To transport water and
C The grasshopper breathes minerals from the roots to
other parts of the plant
through its skin. C To transport the food made in
D The grasshopper breathes the leaves to all parts of the
plant
through openings in its body. D To provide support to the plant

6 Which system carries blood to all 10 Which of the following statements
parts of our body? is not true about roots?
A Digestive system A They provide support to the
B Circulatory system plant.
C Respiratory system B They absorb water and
D Human skeletal system minerals from the soil.
C They store food for the plants.
7 Which of the following organs are D They transport food from the
parts of our circulatory system? leaves to all parts of the plant.
I Stomach
II Heart
III Blood vessels
IV Small intestine
A I and II
B I and III
C II and III
D I, II and III

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Hands-on Science

Subjective Questions
Answer all the questions below.

1 The diagram below shows the human respiratory system.

P
Q

R

(a) What is the breathing process?

(b) From the diagram, write the correct sequence of airflow during breathing
in.

(c) Where does the exchange of gases occur?

(d) What is the gas that is exchanged for carbon dioxide in the lungs?

(e) What is the percentage of gas in the air based on your answer in 1(d)?

Chapter 2 13
Air, Our Body Systems and the Plant Transport System

2 The diagram below shows animals that are classified according to their
respiratory organs. Complete the diagram with the correct answers.

Animals’ respiratory organs

Lungs (a) Skin Openings in the body

Cat Tadpole (b) (c)

3 The diagram below shows the head of a cockroach being dipped into water.

(a) What happens to the cockroach after five minutes?
(b) Give a reason for your answer in 3(a).
(c) Give one example of an animal that has the same respiratory organ with

the cockroach.
4 The diagram below shows a human body system. Answer the questions

according to the diagram.

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Hands-on Science

(a) What is this system called?

(b) What is the main organ of this system?

(c) Complete the flow chart by writing whether the blood is rich in ‘oxygen’ or
‘carbon dioxide’.

(i) Blood rich in (ii) Blood rich in

All parts of the body

(iv) Blood rich in (iii) Blood rich in

5 The diagram below shows a plant. In order to make food, the plant needs
sunlight, water and carbon dioxide.

X

Y

(a) Which part of the plant:
(i) absorbs water and minerals? :
(ii) makes food for the plant? :

(b) How do plants transport water and minerals absorbed from the soil to
other parts of the plant?

(c) How do plants transport the food produced to other parts of the plant?

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Air, Our Body Systems and the Plant Transport System