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Primary 3 Science Semestral Assessment 2 (End of Year) Paper 4

Free P3 Science SA2 Paper 4, Ox Exam version, with questions, answers, and syllabus-aligned practice for Singapore students.

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Primary 3 Science From Real Exams Generated by Ox Alpha Updated 2026-08-27

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Questions

TuitionGoWhere Practice Paper - Science Primary 3

TuitionGoWhere Exam Practice (AI)

Subject: Science Level: Primary 3 Paper: End-of-Year Practice Paper (SA2 Style) - Version 4 Focus Topic: Diversity Duration: 45 minutes Total Marks: 55

Name: ______________________ Class: ______________ Date: ______________

Instructions

Answer ALL 20 questions.
Write your answers in the spaces provided.
The marks for each question are shown in brackets ( ).
Check your answers before handing in your paper.

Section A: Multiple Choice (Questions 1-5) — 10 marks

Choose the correct answer (a, b, c or d) and write its letter in the bracket provided.

Question 1 (2 marks)

Which of the following is a living thing?

(a) a teddy bear (b) a wooden chair (c) a mushroom (d) a glass bottle

Answer: ( ______ )

Question 2 (2 marks)

Four pupils made statements about living things. Which pupil made a correct statement?

(a) Ben: "All living things can move from place to place." (b) Mei: "All living things need air, water and food." (c) Ravi: "Only animals can respond to changes around them." (d) Sara: "A balloon gets bigger when air is blown into it, so the balloon is a living thing."

Answer: ( ______ )

Question 3 (2 marks)

Animal X has these features: dry skin covered with scales, four legs, lays eggs on land, and breathes with lungs.

Which group does Animal X belong to?

(a) fish (b) amphibian (c) reptile (d) bird

Answer: ( ______ )

Question 4 (2 marks)

Mei wants to buy a raincoat to wear on rainy days.

Which property of the material is the MOST important?

(a) It should be able to bend easily. (b) It should not let water pass through. (c) It should be very heavy. (d) It should tear easily.

Answer: ( ______ )

Question 5 (2 marks)

Glass is made when people heat sand until it melts, then cool it into shapes such as windows and bottles.

Which statement about glass is correct?

(a) Glass is a natural material because sand is a natural material. (b) Glass is a man-made material because people have changed the sand to make it. (c) Glass is a living material because it comes from the Earth. (d) Glass is a plant material because it is found in the ground.

Answer: ( ______ )

Section B: Short Answer (Questions 6-10) — 10 marks

Question 6 (2 marks)

Sort the following into living things and non-living things:

bread mould, metal spoon, fern, raincoat, moss, robot toy

Living things	Non-living things

Question 7 (2 marks)

(a) All living things need three things to stay alive. Write them in the blanks. (1 mark)

________________ , ________________ , ________________

(b) Write ONE other thing that all living things can do. (1 mark)

Question 8 (2 marks)

Match each animal to its correct group. Write the letter (A, B, C or D) in each blank.

Animal	Group
penguin	A - bird
frog	B - insect
snake	C - amphibian
butterfly	D - reptile

penguin → ______ frog → ______ snake → ______ butterfly → ______

Question 9 (2 marks)

Write True or False for each statement.

(a) Mushrooms are plants because they grow in gardens and parks. ______

(b) Some bacteria are useful to

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TuitionGoWhere Practice Paper - Science Primary 3

TuitionGoWhere Exam Practice (AI)

Subject: Science Level: Primary 3 Paper: End-of-Year Practice Paper (SA2 Style) - Version 4 Focus Topic: Diversity Duration: 45 minutes Total Marks: 55

Name: ______________________ Class: ______________ Date: ______________

Instructions

Answer ALL 20 questions.
Write your answers in the spaces provided.
The marks for each question are shown in brackets ( ).
Check your answers before handing in your paper.

Section A: Multiple Choice (Questions 1-5) — 10 marks

Choose the correct answer (a, b, c or d) and write its letter in the bracket provided.

Question 1 (2 marks)

Which of the following is a living thing?

(a) a teddy bear (b) a wooden chair (c) a mushroom (d) a glass bottle

Answer: ( ______ )

Question 2 (2 marks)

Four pupils made statements about living things. Which pupil made a correct statement?

Answer: ( ______ )

Question 3 (2 marks)

Animal X has these features: dry skin covered with scales, four legs, lays eggs on land, and breathes with lungs.

Which group does Animal X belong to?

(a) fish (b) amphibian (c) reptile (d) bird

Answer: ( ______ )

Question 4 (2 marks)

Mei wants to buy a raincoat to wear on rainy days.

Which property of the material is the MOST important?

(a) It should be able to bend easily. (b) It should not let water pass through. (c) It should be very heavy. (d) It should tear easily.

Answer: ( ______ )

Question 5 (2 marks)

Glass is made when people heat sand until it melts, then cool it into shapes such as windows and bottles.

Which statement about glass is correct?

Answer: ( ______ )

Section B: Short Answer (Questions 6-10) — 10 marks

Question 6 (2 marks)

Sort the following into living things and non-living things:

bread mould, metal spoon, fern, raincoat, moss, robot toy

Living things	Non-living things

Question 7 (2 marks)

(a) All living things need three things to stay alive. Write them in the blanks. (1 mark)

________________ , ________________ , ________________

(b) Write ONE other thing that all living things can do. (1 mark)

Question 8 (2 marks)

Match each animal to its correct group. Write the letter (A, B, C or D) in each blank.

Animal	Group
penguin	A - bird
frog	B - insect
snake	C - amphibian
butterfly	D - reptile

penguin → ______ frog → ______ snake → ______ butterfly → ______

Question 9 (2 marks)

Write True or False for each statement.

(a) Mushrooms are plants because they grow in gardens and parks. ______

(b) Some bacteria are useful to us. ______

Question 10 (2 marks)

Ali has a wooden ruler and a steel ruler.

Write one property that both materials have, and one way the two materials are different.

Same property: ________________________________________________

Difference: __________________________________________________

Section C: Structured Questions (Questions 11-15) — 15 marks

Question 11 (3 marks)

Ravi caught four animals in the school field: grasshopper, sparrow, lizard and snail.

Complete the table by writing the correct animal next to each description.

Description	Animal
Has six legs and wings
Has a soft body and a shell
Has scales and lays eggs on land

Question 12 (3 marks)

Siti saw a mushroom growing on a rotting log.

(a) Is a mushroom a plant? Write Yes or No. (1 mark)

Answer: ______

(b) Give two reasons for your answer in (a). (2 marks)

Reason 1: __________________________________________________

Reason 2: __________________________________________________

Question 13 (3 marks)

Aminah wants to make a window. She can choose glass or cardboard.

(a) Which material should she choose? (1 mark)

Answer: ______

(b) Give two reasons why this material is suitable for a window. (2 marks)

Reason 1: __________________________________________________

Reason 2: __________________________________________________

Question 14 (3 marks)

Jun kept a bean seed in a damp cotton box. After five days, the seed grew roots and a small green shoot.

(a) Was the bean seed alive before it grew? Explain your answer. (2 marks)

(b) What does the bean plant need so it can keep growing? (1 mark)

Question 15 (3 marks)

Study these four animals: goldfish, duck, shark, eagle.

Group them into the table below. One animal has been done for you.

Lives in water only	Can fly

Section D: Open-Ended Questions (Questions 16-20) — 20 marks

Question 16 (4 marks)

Look at the four animals below: bat, whale, ostrich, penguin.

(a) All four animals are warm-blooded and have backbones. Name the large group they all belong to. (1 mark)

Answer: ________________________________________

(b) The bat can fly but it is not a bird. Give one reason why. (1 mark)

(d) The penguin is a bird even though it cannot fly. State one feature of a bird that the penguin has. (1 mark)

Question 17 (4 marks)

Kumar tested four materials, A, B, C and D, by dropping water on each one. He recorded his results.

Material	Did water pass through?	Does it bend easily?
A	No	No
B	Yes	Yes
C	No	Yes
D	Yes	No

(a) Which material is the most suitable for making an umbrella? (1 mark)

Answer: ______

(b) Give two reasons for your choice. (2 marks)

(c) Kumar found that material D was made from a natural material. Suggest one natural material that D could be. (1 mark)

Question 18 (4 marks)

Meena compared a hibiscus plant and a cat. She wrote down her observations.

(a) Complete the table with Yes or No. (2 marks)

Observation	Hibiscus plant	Cat
Can move from place to place
Responds to changes around it

(b) Based on the table, state one difference between the hibiscus plant and the cat. (1 mark)

Question 19 (4 marks)

Some microorganisms are useful and some are harmful.

(a) Name one useful microorganism and state how it helps people. (2 marks)

Microorganism: __________________________________

How it helps: ___________________________________

(b) Name one harmful microorganism and state one problem it causes. (2 marks)

Microorganism: __________________________________

Problem it causes: _______________________________

Question 20 (4 marks)

The table shows some objects and the main material each object is made from.

Object	Main material
T-shirt	cotton
Window pane	glass
Tyre	rubber
Steel spoon	steel

(a) Circle the objects made from man-made materials: cotton, glass, rubber, steel (1 mark)

(b) Cotton comes from a plant. Name the part of the plant that cotton comes from. (1 mark)

(d) State one reason why steel is used to make spoons instead of paper. (1 mark)

END OF PAPER

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Answers

TuitionGoWhere Practice Paper - Answer Key

Subject: Science | Level: Primary 3 | Focus Topic: Diversity Paper: End-of-Year Practice Paper (SA2 Style) - Version 4

Section A: Multiple Choice

Question 1: (c) a mushroom

Question 2: (b) Mei: "All living things need air, water and food."

Question 3: (c) reptile

Question 4: (b) It should not let water pass through.

Question 5: (b) Glass is a man-made material because people have changed the sand to make it.

Section B: Short Answer

Question 6:

Living things: bread mould, fern, moss
Non-living things: metal spoon, raincoat, robot toy

Question 7: (a) air, water, food (b) Any one of: grow; respond to changes around them; reproduce; die/get old (accept any life process).

Question 8: penguin → A; frog → C; snake → D; butterfly → B

Question 9: (a) False — mushrooms are fungi, not plants. (b) True

Question 10:

Same property: both are solid / hard / strong (accept any shared property).
Difference: wood floats in water but steel sinks (or: steel is stronger than wood; wood comes from a living thing but steel does not). Accept any valid difference.

Section C: Structured Questions

Question 11:

Six legs and wings: grasshopper
Soft body and shell: snail
Scales, lays eggs on land: lizard

Question 12: (a) No (b) Any two of:

A mushroom is a fungus, not a plant.
It cannot make its own food (it feeds on the rotting log).
It does not have leaves/roots like a plant.

Question 13: (a) Glass (b) Any two of:

Glass lets light pass through (transparent).
Glass is waterproof / does not let water pass through.
Glass is hard and strong.

Question 14: (a) Yes, the bean seed was alive. It could grow when given water, which shows it was a living thing. (b) Air, water and sunlight (accept any of these).

Question 15:

Lives in water only: goldfish, shark
Can fly: duck, eagle

Section D: Open-Ended Questions

Question 16: (a) Mammals (b) The bat has fur/hair and gives birth to young that drink milk (it is a mammal). (c) The whale breathes with lungs and must come up to the surface for air (or: it gives milk to its young). (d) It has feathers / a beak / two legs / wings (any bird feature).

Question 17: (a) C (b) Material C does not let water pass through AND bends easily, so it can be folded/shaped into an umbrella. (c) Leather / leaf / animal skin (any natural waterproof-ish material; accept reasonable answers such as rubber if treated as natural latex).

Question 18: (a)

Observation	Hibiscus plant	Cat
Can move from place to place	No	Yes
Responds to changes around it	Yes	Yes

(b) The cat can move from place to place but the hibiscus plant cannot. (c) Both are living things / both respond to changes around them / both need air, water and food.

Question 19: (a) Yeast — it is used to make bread rise (accept: bacteria used to make yoghurt/cheese). (b) Any disease-causing microorganism, e.g., some bacteria/viruses cause illnesses such as food poisoning, flu or tooth decay.

Question 20: (a) Man-made: glass, steel (rubber may be natural or man-made; expected answer: glass and steel circled). (b) The flower / fruit part of the cotton plant (the fluffy fibres around its seeds). (c) Rubber is strong, flexible and does not let water pass through easily (accept one reason). (d) Steel is much stronger than paper and will not tear or break easily when used.

END OF ANSWER KEY