SECTI ON A/ A
[ 30marks/ ]
Time/: 45 minutes/
Answer all the questions./
Instructions: Each question is followed by four options, A, B, C and D. Choose the correct answer. /
A,B.C.D
1. Name the group of the microorganisms in Diagram 1
1 .
A. Protozoa /
B. Bacteria /
C. Algae /
D. Virus/
2. Diagram 2 shows a type of microorganism. Name the microorganisms 2
.
.
A. Bacteria /
B. Fungus /
C. Virus /
D. Germ /
Virus/
Protozoa /
Bacteria /
Diagram 3
3. Diagram 3 shows the types of microorganisms.
3 .
Which of the following is Z
Z ?
A. Fungi /
B. Mould /
C. Yeast /
D. Amoeba /
4. Which of the following living things are
microorganisms?
?
A. I and ii
B. I and iii
C. II and iv
D. iii and iv
Z
5. Which of the following foods are using yeast?
?
A. i and ii
B. I and iv
C. ii and iii
D. iii and iv
6.The information below shows the ingredients used to make dough.
.
Which of the following materials causes the dough to rise ?
.
A. Flour /
B. Warm water /
C. Yeast /
D. Sugar /
7. Which is a microorganism ?
?
I cup of flour /1
1/2 cup of warm water / 1/2
1 teaspoon of dried yeast / 1
1 teaspoon of suger / 1
A. Salt / B. Book /
C. Yeast / D. Sugar /
8. Which microorganisms is the smallest?
?
A. Virus / C. Fungus /
B. Yeast / D. Amoeba /
9. Why are microorganisms not visible to the naked eye?
.
A. They move fast /
B. They are very tiny /
C. They are harmful /
D. They grow faster /
10. Fungi can be found growing on /
I. Mouldy bread /
II. Rotten food /
III. Dead plants /
A. I and II only C. II and III only
B. I and III only D. I,II and III
11. Diagram shows an experiment. A slice of bread was let in a plastic bag. The area of black spots on the
bread was increasing with the days.
.
.
.
What conclusion can be made through this experiment?
?
A. Microorganism are harmful/
B. Microorganisms are poisonous/
C. Microorganisms brearthe/
D. Microorganisms grow/
12. Which statement about microorganisms is true?
?
A. Microorganisme are all around us /
.
B. Microorganisms are only found in toilets/
C. All Microorganisms can cause illnesses /
.
D. All Microorganisms cannot be destroyed/
.
13. Microorganisms can be seen through a
A. Mirror / C. Telescope /
B. Microscope / D. Computer /
14. Diagram shows a piece of bread that has left for a few days.
Based on the observation , fungus has grown on the bread. Which of the following conditions
causes the fungus to grow on it?
.
.
A. Damp and Cold /
B. Damp and warm /
C. Dry and warm /
D. Dry and cold /
15. Which of following statements are true about these microorganisms
.
i. They are living things
.
ii. They can breathe
.
iii. They can be seen with naked eyes.
.
A. 1 and II only
B. I and III only
C. II and III only
D. I,II and III
16. Some suger is mixed with warm water in a flask. A spoonful of yeast is added to the mixture
which is then stirred with a spoon. A balloon is fitted tightly over the mouth of the flash. It is then
left aside for 20 minutes. Diagram 2 shows the observation made.
.
.
.
20
.
What has caused the balloon to inflate ?/ ?
A. The sugar /
B. The yeast /
C. The stirring /
D. The warm water /
17. All of the following animals take care of their youngs in the same way except
. .
18. A hen protect her young?
.
A. By flapping her wings C. By getting food for them
B. By keeping them in a burrow D. By attacking the enemy when threatened
19. Which animal is related with the below information /
?
A. Eagle / B. frog /
C. monkey / D. snake /
20. Which of the following is not means of seed dispersal by palants?
.
A. Animals / B. Water / C. Wind / D. Rain /
21. How are the seeds of the plants above dispersed
.
A. Water /
B. Wind /
C. Animals /
D. Explosive mechanism /
Take care of its eggs /
Take care of its youngs /
Lay eggs on a top palce /
Rubber /
Balsam /
Ladys finger/
Long beans/
22. Which of the following can be dispersed in the same way as the fruits above?
?
23. What do the activities in the diagram show?
?
A. Competition / C. Reproduce /
B. Conservation / D. Food Chain /
24. How many food chain are there in the food web ?
.
A. 4 B. 5 C. 6 D.7
25. Which of the following animals is a herbivore in the habitat?
?
A. Snake / b. Eagle / C. Bee / D. Rat /
26. A food chain a habitat is shown in diagram below.
.
What is the possible organism X likely chain? / X
?
A. Rat / B.Frog / C. Rabbit/ D. snake/
27. Which can be a producer in a food chain?
.
I Butterfly - II Grasshoppers -
III Lalang - V Hibiscus plants -
Honey/
Butterfly/
X Owl /
A. I and II B. III and Iv C. I,III and IV D. I,II,III and IV
28. How many omnivores are there in the food web in the diagram?
?
A. 1 B. 2 C. 3 D. 4
29. The diagram shows a food chain. Which organisms has the largest population?
.
.
A. Plant / B. worm/ C. Chicken / D. Python/
30. Which of the following food chains is not correct ?
.
A. Grass/ Sheep/ tiger/
B. Fruits/ Squirrel/ eagle/
C. Seeds/ duck / Chicken /
D. Honey / butterfly/ frog/
Plant / worm/ Chicken / Python/
Section B
B
Answer all questions.
.
Write your answers in the spaces provided.
.
1. Table below shows the result of the investigation.
, .
Number of spoonful of yeast
()
Rise in the dough (cm)
(cm)
1 2
2 4
3 6
(a) What is the purpose (aim) of the investigation ?
?
(b) State :
:
i. What is changed (manipulated variabel)
( )
ii. What is observed (responding variable)
( )
(c) State two other variables that is kept the same.
()
.
i. ____________________________________________________________________
ii. ____________________________________________________________________
2. Diagram shows the result of an investigation carried out by a group of pupils to find out if
water is necessary for microorganisms to grow. They toasted a piece of bread in the toaster to dry
it and sprinkled a few drops water on another piece. The pieces of bread were left at a dark corner
of a science laboratory for four days.
,
.
,
.
.
.
(a) State two information that you can obtain from diagram.
.
i. ________________________________________________________________
ii. ___________________________________________________________________
(b) In this investigation , state what is :
, .
(i) Kept the same / :
____________________________________________
(ii) Changed / :
_____________________________________________________________
(c) What conclusion can be made from this investigation ?
?
3. Kamaleshwaran viewed the samples of three types of water under a microscope. Table shows the
results of this investigation.
.
.
Type of water
Boiled water
River water
Drain water
Presence of microoraganisms
No
Yes
Yes
(a) What is the aim of this investigation?
?
__________________________________________________________________
__________________________________________________________________
(1 mark / 1 )
(a) Why do you think microorganisms is absent in boiled water?
?
____________________________________________________________________
____________________________________________________________________
(1 mark / 1 )
(c) What will happen if river water is used as drinking water without boiling?
?
____________________________________________________________________
____________________________________________________________________
(1 mark / 1 )
(d) Diagram shows an observation of a microorganism from the sample of drain water under a
microscope.
, .
What can you infer from the observation in diagram?
?
____________________________________________________________________
____________________________________________________________________
(2 marks / 2 )
4 The bar chart below shows the number of living things in a habitat.
Number
Living things /
(a) Write two food chain based on the bar chart.
.
______________________________________________________________________________________________
[2 mark]
(b) Name the carnivores in the food chain.
.
______________________________________________________________________________________________
[1 mark]
(c) State what will happen in each situation below.
.
i. All the grasshoppers die in the area.
?
_______________________________________________________________________________________
[1 mark]
ii. The number of frogs suddenly increases in the habitat.
?
____________________________________________________________________________________________
[1 mark]
