From Real Exams Exam Paper

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

Free P3 Science SA2 Paper 3, HY3 Exam version, with questions, answers, and syllabus-aligned practice for Singapore students.

These static practice materials are generated from the site's syllabus and paper-generation workflow, with source and model context shown so students and parents can evaluate the material before use.

Primary 3 Science From Real Exams Generated by Tencent HY3 Free Updated 2026-08-17

Back to Subject Browse Free Exam Papers

Questions

TuitionGoWhere Exam Practice (AI) - Science Primary 3

SA2 Practice Paper (Version 3 of 5)

School: TuitionGoWhere Exam Practice (AI)
Subject: Science
Level: Primary 3
Paper: SA2 Practice (Diversity Topic Quiz)
Version: 3
Duration: 45 minutes
Total Marks: 40

Name: ______________________
Class: _________
Date: ___________

Instructions:

This paper has 20 questions on the topic of Diversity.
Section A: 10 multiple-choice questions (1 mark each).
Section B: 6 short-answer questions (1–2 marks each).
Section C: 4 structured questions (2 marks each).
Answer all questions in the spaces provided.
Use a pencil to draw any required lines on diagrams.

Section A (10 marks)

Choose the correct answer for each question.

1. Which of the following is a living thing?
(a) A toy robot
(b) A cactus plant
(c) A wooden chair
(d) A plastic cup

2. Which characteristic shows that a cat is a living thing?
(a) It is coloured
(b) It can grow and reproduce
(c) It is soft
(d) It can be carried

3. An animal has feathers and lays eggs. Which group does it belong to?
(a) Fish
(b) Bird
(c) Insect
(d) Mammal

4. Which material is natural?
(a) Plastic bag
(b) Cotton shirt
(c) Glass cup
(d) Nylon rope

5. A material lets all light pass through. It is used for a window. This material is most likely ________.
(a) Wood
(b) Rubber
(c) Glass
(d) Metal

6. Bacteria are best described as ________.
(a) Plants
(b) Non-living things
(c) Microorganisms that are living
(d) A type of rock

7. Which of these is NOT an animal group?
(a) Reptile
(b) Amphibian
(c) Fungus
(d) Mammal

8. A boy blows air into a balloon and it gets bigger. This is ________.
(a) Growth of a living thing
(b) Not growth because it is non-living
(c) Reproduction
(d) A response to light

9. Which material would be best for a raincoat?
(a) Paper, because it is thin
(b) Plastic, because it is waterproof
(c) Wood, because it is hard
(d) Cotton, because it is soft

10. A mushroom is an example of ________.
(a) A plant
(b) A fungus
(c) An insect
(d) A bacterium

Section B (12 marks)

Answer the following.

11. State one characteristic that all living things share. (1 mark)

12. Classify each item below as living (L) or non-living (NL). (2 marks)

Dog ___
Stone ___

13. Name one material that is man-made. (1 mark)

14. Give one reason why glass is suitable for a drinking cup. (1 mark)

15. Fill in the blank: A fish breathes using its _______. (1 mark)

16. True or False: All fungi are harmful to humans. (1 mark)

17. Match the animal to its group. (2 marks)

Frog → _________
Bee → _________
(Groups: amphibian, insect, mammal, bird)

18. State one property of rubber that makes it useful for shoe soles. (1 mark)

19. Is a teddy bear a living thing? Give a reason. (2 marks)

20. Which is better for a see-through lunch box: glass or wood? Why? (2 marks)

Section C (18 marks)

Answer the following structured questions.

21. Study the objects below.

Diagram for 21 (P3 Science)

Generated diagram for 21.

Sort them into living and non-living things. (2 marks)
Living: ________________________
Non-living: ________________________

22. Complete the table about materials. (2 marks)

Material	Transparent (Yes/No)	Waterproof (Yes/No)
Plastic
Wood

23. An animal has dry scales, lays eggs on land, and breathes with lungs.
(a) Name the animal group. (1 mark)
(b) Give one example. (1 mark)

24. Explain why a metal pan is used for cooking. Use the property of metal in your answer. (2 marks)

25. Look at the classification chart.

Diagram for 25 (P3 Science)

Generated diagram for 25.

A dog has fur. Which group does it belong to? (2 marks)

26. Some bacteria are useful. Give one example of how bacteria can be helpful. (2 marks)

27. A student says: "The cloud moves in the sky, so it is a living thing."
Is the student correct? Explain. (2 marks)

28. Compare a cotton shirt and a plastic raincoat.
(a) Which is natural? (1 mark)
(b) Which is waterproof? (1 mark)
(c) Why is plastic used for raincoats? (1 mark)

29. Fill in the blanks using the word bank: [grow, reproduce, respond, air]
Living things need _______ to breathe. They can _______ when touched. They _______ bigger over time. They can _______ to make young. (2 marks)

30. A frog starts as an egg, becomes a tadpole, then an adult.
(a) Is a frog a living thing? (1 mark)
(b) Name its animal group. (1 mark)
(c) State one stage in its life cycle. (1 mark)

Free quiz and exam paper access

Enter your details to view this paper

Your access is remembered on this device.

Answers

Answer Key: TuitionGoWhere Exam Practice (AI) - Science Primary 3 SA2 Practice (Version 3)

Topic: Diversity
Total Marks: 40

Section A (10 marks)

1. (b) A cactus plant [1]
Teaching note: Living things include plants. A cactus is a plant and is alive; the others are non-living human-made objects.

2. (b) It can grow and reproduce [1]
Teaching note: Growth and reproduction are key characteristics of living things. Colour and softness are not proof of life.

3. (b) Bird [1]
Teaching note: Birds have feathers and lay eggs. Fish have scales, insects have wings/exoskeleton, mammals have fur and usually live young.

4. (b) Cotton shirt [1]
Teaching note: Cotton comes from the cotton plant (natural). Plastic, glass, nylon are man-made.

5. (c) Glass [1]
Teaching note: Glass is transparent (light passes through). Wood, rubber, metal are not see-through.

6. (c) Microorganisms that are living [1]
Teaching note: Bacteria are living microorganisms, not plants and not non-living.

7. (c) Fungus [1]
Teaching note: Fungus is a separate group (e.g., mushroom), not an animal group.

8. (b) Not growth because it is non-living [1]
Teaching note: A balloon inflating is just air filling space; the balloon is non-living so it is not growth of a living thing.

9. (b) Plastic, because it is waterproof [1]
Teaching note: Raincoats must keep water out; plastic does not absorb water.

10. (b) A fungus [1]
Teaching note: Mushroom is a fungus, not a plant, insect, or bacterium.

Section B (12 marks)

11. [1] Any one: need air / need food / need water / can grow / can reproduce / can respond / can move by itself.
Teaching note: Living things share these traits; state one clearly.

12. [2] Dog – L; Stone – NL (1 mark each)
Teaching note: Dog is animal (living); stone is non-living.

13. [1] Plastic / glass / nylon (any one man-made).
Teaching note: Natural would be wood, cotton; man-made is produced by humans.

14. [1] Transparent (can see through) OR waterproof (does not leak).
Teaching note: Glass is used as cup because we can see liquid and it does not absorb.

15. [1] Gills.
Teaching note: Fish use gills to take in oxygen from water.

16. [1] False.
Teaching note: Some fungi like mushrooms are edible and useful; not all harmful.

17. [2] Frog → amphibian; Bee → insect (1 mark each).
Teaching note: Frog lives both water/land as young/adult; bee is an insect with wings.

18. [1] Flexible / soft / bends without breaking.
Teaching note: Rubber bends, good for grip and comfort.

19. [2] No. (1m) Reason: It is a toy made of cloth/plastic, cannot grow or reproduce. (1m)
Teaching note: Looks like animal but non-living; common mistake is thinking moving toy = alive.

20. [2] Glass (1m) because it is transparent so we can see food inside (1m).
Teaching note: Wood is not see-through; glass allows light through.

Section C (18 marks)

21. [2] Living: cat, rose, lizard (1m for at least 2 correct, full if all 3). Non-living: car, book, spoon (1m).
Image note: Diagram shows 6 labelled objects; cat/rose/lizard are living, others non-living.

22. [2] Plastic: Transparent Yes, Waterproof Yes. Wood: Transparent No, Waterproof No. (0.5 each)
Teaching note: Plastic see-through and water-resistant; wood opaque and absorbs water.

23. [2] (a) Reptile (1m) (b) Lizard / snake / turtle (1m).
Teaching note: Dry scales + lungs + land eggs = reptile.

24. [2] Metal is strong and conducts heat (1m). It can be heated to cook food (1m).
Teaching note: Property → use link required.

25. [2] Mammal (1m). Because dog has fur, chart shows fur → Mammal (1m).
Image note: Tree diagram shows Animals → fur → Mammal; dog matches fur branch.

26. [2] Example: bacteria help make yoghurt / break down food in gut (1m) + brief explain (1m).
Teaching note: Not all bacteria bad; some aid digestion or food.

27. [2] No (1m). Cloud moves by wind, not by itself; non-living cannot move on own or grow (1m).
Teaching note: Movement alone does not mean living.

28. [3] (a) Cotton shirt (1m) (b) Plastic raincoat (1m) (c) Plastic waterproof keeps rain out (1m).

29. [2] air, respond, grow, reproduce (0.5 each).
Teaching note: Fill blanks with syllabus words.

30. [3] (a) Yes (1m) (b) Amphibian (1m) (c) Egg / tadpole / adult (1m).
Teaching note: Frog is living amphibian; life cycle stage from text.