science year 4 chapter 1

Chapter 1 – Living Things Have Basic NeedsSection AEvery question is followed by four options A, B, C and D. Choose the correct answer.

1 The basic needs of a plant are

I airII heatIII lightIV water

A I, II and III B I, II and IV C I, III and IVD II, III and IV

2

Figure 1

A plant which is not watered for a few days will wither. This shows that

A plants need water to stay aliveB plants need food to stay aliveC plants need sunlight to stay aliveD plants need air to stay alive

3 All living things

A need foodB do not growC cannot moveD stay alive forever

© Pearson Malaysia Sdn Bhd 2007 my WORLD of SCIENCE KBSR Year 41

4 Which of the following charts represents the weight of a healthy growing chick?

A Weight

WeekB Weight

WeekC Weight

WeekD Weight

Week

5 We need ____________________ when we are hungry.

A airB foodC waterD oxygen

6 In what ways are animals and plants alike?

A Both can make their own foodB Both can move by themselvesC Both are non-living thingsD Both need air and water


7 A hamster in an airtight container will suffocate and eventually die. Why?

A It does not have enough airB It does not have enough foodC It does not have enough spaceD It does not have enough sunlight

8 If you grow a plant on a windowsill, the plant will

A turn yellow B grow away from the lightC wither and dieD grow towards the light

9 Wind, rain and clouds are

A alive because they can growB alive because they can move by themselvesC not alive because they cannot flyD not alive because they cannot have young

10 Which of the following statements are correct?

I Humans need air to breatheII Humans need sunlight to make foodIII Humans need shelter to protect themselves from danger, sun and rainIV Humans need to eat and drink to grow and stay healthy

A I, II, and III onlyB I, III, and IV onlyC II, III, and IV onlyD I, II, III, and IV

11 living fish dead fish oil

water water

Container 1 Container 2

Figure 2

The investigation in Figure 2 shows that animals need


A airB foodC waterD sunlight

12 In which jar will the cockroach remain alive after five days?

A

B

C

D

13 A leaf covered with a layer of grease will turn yellow after a few days. This is because of

A insufficient sunlightB insufficient airC insufficient mineralsD insufficient water

14 wet cotton

Figure 3

After a few days, what will happen to the seeds shown in Figure 3?

A It will become dryB It will germinateC It will dieD Nothing will happen to the seeds


15

Figure 4

Look at the setup in Figure 4 carefully. What is the purpose of the experiment?

A To show that plants need airB To show that plants need waterC To show that plants need sunlightD To show that plants need food

16

Figure 5

A covered jar containing a butterfly is placed in a cupboard for two days. The butterfly is later found dead. This is because the butterfly

A did not get enough airB did not get enough foodC did not get enough waterD did not get enough sunlight

17 A rabbit will die if it is not given food for a week. It needs food

A for breathingB to generate energy and heatC for blood circulationD to control body temperature

18 All of the following are basic human needs except

A airB foodC waterD sunlight


19 Humans need shelter to protect themselves from the following except

A sunB rainC dangerD diseases

20

Figure 6

The illustrations in Figure 6 show that plants can

A growB moveC reproduceD bear fruit

21 Which of the following seeds will germinate?

A

B

wet cotton

C

dry cotton

D

dry sand


22

Figure 7

After one week, the grass which was covered with a stone has turned yellow. Why?

A It did not get enough airB It did not get enough waterC It did not get enough foodD It did not get enough sunlight

23 Which of the following factors will affect the germination of seeds?

I AirII WaterIII Sunlight

A I and II onlyB I and III onlyC II and III onlyD I, II and III

24 Among the following, which is not true?

A Humans need air to breatheB Humans need to eat to grow and stay healthyC Humans need sunlight to make foodD Humans need shelter to protect themselves from sun and rain

25 Humans need to eat well to

A breathe properlyB satisfy their hungerC grow and stay healthy D keep fit and stay beautiful

26 Which of the following pairs is not correct?

A Tiger -------- jungleB Snake ------- holesC Bat ------- cavesD Rabbit ------- nests


27 Among the animals listed below, which is commonly kept as a pet by humans?

A CatB SnakeC TigerD Monkey

28

The above are basic needs of

A humans B plantsC animalsD babies

29

Figure 8

Apart from birds, the picture in Figure 8 is common shelter for

A tortoisesB dogsC squirrelsD tigers


air water sunlight

30

Figure 9

In what way are they alike?

A Both need sunlight to make foodB Both can reproduceC Both can move by themselvesD Both can produce sound


Section B

Instruction : Write your answers in the spaces provided.

1

Container A Container B Container C

Figure 1

Study the set-up in Figure 1 carefully.

(a) In which container(s) will the fish remain alive after three days?

________________________________________________________________

(b) Explain your answer in (a).

________________________________________________________________

(c) If container A is kept in a refrigerator, what will happen to the fish?

________________________________________________________________

(d) Explain your answer in (c).

________________________________________________________________


2

black box

A B Figure 2

(a) Predict what will happen to both plants shown in Figure 2 after one week.

(i) Plant A : _______________________________________________________

(ii) Plant B : _______________________________________________________

(b) In the above experiment, what variables should be kept constant?

_______________________________________________________________

(c) What conclusion can be made from this experiment?

______________________________________________________________


seal wet cotton dry cotton wet cotton black box3

A B C wet cotton

Figure 3 D

(a) Based on the illustrations in Figure 3, give one

(i) manipulative variable:_____________________________________________________________

(ii) constant variable:_____________________________________________________________

(b) Predict the condition of the seeds in every container after one week.

(i) Container A : __________________________________________________

(ii) Container B : __________________________________________________

(iii) Container C : __________________________________________________

(iv) Container D : __________________________________________________

(c) Write the inferences for your answers in (b).

(i) Container A : __________________________________________________

__________________________________________________

(ii) Container B : __________________________________________________

__________________________________________________

(iii) Container C : __________________________________________________

__________________________________________________

(iv) Container D : __________________________________________________

__________________________________________________


4 Complete the following flow chart:

(a)

(b) How do plants get their food?

________________________________________________________________

(c) If a plant is watered every day but it is covered with a box, what will happen to it

(i) after one day ? ________________________________________________

(ii) after one week ? _______________________________________________

(iii) after one month ? ______________________________________________

(d) Explain your answers in (c).

________________________________________________________________


Basic needs of plants

5

Figure 4

Razak puts a lizard, a grasshopper, and a mouse in three separate airtight jars as shown in Figure 4 above. After a few hours, all the animals died.

(a) What can you infer from the above observation?

________________________________________________________________

(b) State the hypothesis that Razak wants to prove in this experiment.

________________________________________________________________

(c) What variable should Razak keep constant?

________________________________________________________________

(d) Name three basic animal needs.

________________________________________________________________


science year 4 chapter 1

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