2012 Primary 3 Science Continual Assessment 1

Section A

For each question from 1 to 7, four options are given. One of them is the correct answer. Make your choice (1, 2, 3 or 4).

1.

Refer to the classification diagram below.

What are X and Y likely to be?

	X	Y
(1)	Rose plant	Banana plant
(2)	Hippopotamus	Ixora plant
(3)	Hibiscus plant	Elephant
(4)	Mimosa plant	Jasmine plant

1. 1
2. 2
3. 3
4. 4

2.

Which of the following is/are true of all living things?

A: They are ale to grow.
B: They give birth to their young.
C: They can make their own food.

1. A only
2. B only
3. A and B only
4. B and C only

3.

The table below shows the characteristics of A, B, C and D.

Characteristics	A	B	C	D
Has two wings	√		√
Can move on its own	√	√		√
Needs air, food and water		√
Can move from place to place	√		√

Which of them (A, B, C or D) is a living thing?

1. A
2. B
3. C
4. D

4.

Plants and animals are similar because they __________________________________.

1. lay eggs.
2. grow and reproduce.
3. make their own food.
4. move about to get food.

5.

Ali, Bernard, Carrisa and David were given some blocks to arrange into two groups.

Who has classified the blocks correctly?

1. Ali
2. Bernard
3. Carrisa
4. David

6.

Tom has a potted plant. What is/are the following he must provide for the plant to be alive?

A: air
B: food
C: water
D: sunlight

1. A only
2. C and D only
3. A, C and D only
4. A, B, C and D

7.

Which of the following is/are not found in all plants?

A: roots
B: stems
C: leaves
D: flowers

1. A only
2. D only
3. B and C only
4. C and D only

Section B

For questions 1 to 5, write your answers in the blanks provided.

1.

The objects below are classified into two groups, P and Q.

(a) What characteristic is used to group the objects?

____________________________________________________________________

(b) If you were to classify the objects in another way, what characteristic will you use?

____________________________________________________________________

2.

Look at the pictures below. Picture A shows a mother duck swimming with her ducklings and Picture B shows a moving bus.

Based on the pictures above, explain (using the characteristics of living things) why the duck and ducklings are living things but the bus is not a living thing.

(a) __________________________________________________________________

__________________________________________________________________

(b) __________________________________________________________________

__________________________________________________________________

(c) __________________________________________________________________

__________________________________________________________________

3.

Refer to the classification diagram below.

(a) Refer to the above classification diagram, which letter best represents the things listed below.

(i) Bag : ________________

(ii) Moss : ________________

(b) State one similarity between B and C.

____________________________________________________________________

____________________________________________________________________

(b) State one difference between A and D.

____________________________________________________________________

____________________________________________________________________

4.

Mr. Tan bought two pet birds and put them into a cage.

(a) What are the two things Mr. Tan should put into the cage to ensure that the birds stay alive?

____________________________________________________________________

____________________________________________________________________

(b) When Mr. Tan tried to catch the birds with his hands, the birds jumped about to get away from him.

State two characteristics of living things the birds were showing?

____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

____________________________________________________________________

5.

The picture below shows a balsam plant.

Label the parts A, B, C and D in the lines provided below.

A: __________________________ B: __________________________

C: __________________________ D: __________________________

Section A (Answers)

Answers

1.

C.

2.

A.

3.

B.

4.

B.

5.

D.

6.

C.

7.

B.

Section B (Answers)

Answers

1.

(a) shapes

(b) colour/size

2.

(a) The ducks are able to move on their own but the bus cannot move on its own.

(b) Picture A the ducking can respond to changes but Picture B the bus cannot respond to changes.

(c) Picture A the ducking can reproduce but Picture B the bus can't reproduce.

3.

(a)(i) A
(ii) C

(b) Both B and C are Living things.

(c) A is non-Living thing but D is a living thing.

4.

(a) He should give water and food to make the bird stay alive.

(b) Living things respond to changes.
Living things move by themselves.

5.

A: leaves
B: flower
C: stem
D: roots