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

Free P3 Science SA2 Paper 4, HY3 Exam version, with questions, answers, and syllabus-aligned practice for Singapore students.

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Questions

TuitionGoWhere Exam Practice (AI) - Science Primary 3

School: TuitionGoWhere Exam Practice (AI)
Subject: Science
Level: Primary 3
Paper: SA2 Practice Paper (Version 4 of 5)
Duration: 60 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 mark each).
Section C: 4 structured questions (2 marks each).
Write your answers clearly in the spaces provided.

Section A: Multiple Choice (10 marks)

For each question, choose the correct answer and write its letter in the box.

1. Which of the following is a living thing?
A) Toy robot
B) Wooden chair
C) Mango tree
D) Plastic cup

2. A cat and a goldfish are both classified as ________.
A) plants
B) animals
C) fungi
D) bacteria

3. Which animal group has feathers and lays eggs?
A) Fish
B) Birds
C) Mammals
D) Reptiles

4. Which of these is NOT a characteristic of living things?
A) Needs food
B) Can grow
C) Made of plastic
D) Can reproduce

5. Mushrooms belong to which group?
A) Plants
B) Animals
C) Fungi
D) Bacteria

6. Which material is natural?
A) Plastic bag
B) Cotton shirt
C) Glass cup
D) Nylon rope

7. A raincoat is usually made of waterproof material so that it can ________.
A) let light pass through
B) keep the wearer dry
C) float on water
D) break easily

8. Which material would be most suitable for a window pane that lets light through?
A) Wood
B) Metal
C) Glass
D) Rubber

9. Bacteria are ________.
A) non-living things
B) a type of plant
C) living microorganisms
D) made by humans

10. Which of the following animals breathes using gills?
A) Dog
B) Sparrow
C) Tilapia fish
D) Frog (on land)

Section B: Short Answer (6 marks)

Write your answer in the blank space.

11. Name one characteristic that all living things share. _________________________

12. Classify "fern" as a flowering or non-flowering plant. _________________________

13. State one natural material used to make clothes. _________________________

14. Give one example of a mammal. _________________________

15. State one property of rubber that makes it useful for shoe soles. _________________________

16. Is a teddy bear a living thing? Give a reason. _________________________

Section C: Structured Questions (8 marks)

Answer both parts of each question.

17. (a) State two characteristics of living things. [1]
(b) Explain why a moving toy car is not a living thing. [1]

18. (a) Name one man-made material. [1]
(b) Give one reason why it is used to make water bottles. [1]

19. (a) Name two groups of animals that have scales. [1]
(b) State one difference between fish and birds in how they breathe. [1]

20. (a) State one way fungi are different from plants. [1]
(b) Give one example of a useful fungus for humans. [1]

End of Paper

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Answers

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

Paper: SA2 Practice Paper (Version 4 of 5)
Topic: Diversity
Total Marks: 40

Section A: Multiple Choice

1. C [1]
Teaching note: A mango tree is a living thing because it grows, needs air/water/food, and reproduces. Toys and chairs are non-living.

2. B [1]
Teaching note: Both cat (mammal) and goldfish (fish) are animals. Animals are living things that move and eat.

3. B [1]
Teaching note: Birds have feathers and lay eggs. Fish have scales, mammals have fur, reptiles have dry skin.

4. C [1]
Teaching note: "Made of plastic" is a property of non-living man-made objects, not a life characteristic.

5. C [1]
Teaching note: Mushrooms are fungi, not plants. They do not make food from sunlight.

6. B [1]
Teaching note: Cotton is natural (from cotton plant). Plastic, glass, nylon are man-made.

7. B [1]
Teaching note: Waterproof means water cannot pass through, so the wearer stays dry.

8. C [1]
Teaching note: Glass is transparent (lets light through) and used for windows.

9. C [1]
Teaching note: Bacteria are living microorganisms; they are not plants and not non-living.

10. C [1]
Teaching note: Fish use gills to breathe underwater. Dogs and birds use lungs.

Section B: Short Answer

11. [1] Any one: needs water / needs food / needs air / can grow / can reproduce / responds to changes.
Teaching note: Living things must have these to survive.

12. [1] Non-flowering plant.
Teaching note: Ferns do not produce flowers or seeds; they reproduce via spores.

13. [1] Cotton / wool / silk / leather (any natural).
Teaching note: These come from plants or animals, not made in factories.

14. [1] Cat / dog / cow / human (any mammal).
Teaching note: Mammals have fur/hair and feed young with milk.

15. [1] Flexible / soft / waterproof (any suitable).
Teaching note: Rubber bends and does not absorb water, good for grip.

16. [1] No. Reason: It does not grow, eat, or reproduce by itself; it is made of cloth and plastic.
Teaching note: Looking alive does not make it living.

Section C: Structured Questions

17. [2]
(a) [1] Two from: grow, need food, need water, need air, reproduce, respond to stimuli.
(b) [1] It is powered by batteries/remote and cannot grow or reproduce; it is non-living.
Marking: 1 mark for two correct characteristics, 1 mark for correct reason.

18. [2]
(a) [1] Plastic / glass / nylon (any man-made).
(b) [1] It is waterproof / light / does not break easily, so keeps water inside.
Marking: 1 mark name, 1 mark property-use link.

19. [2]
(a) [1] Fish and reptiles (both have scales).
(b) [1] Fish breathe with gills; birds breathe with lungs.
Marking: 1 mark two groups, 1 mark correct breathing difference.

20. [2]
(a) [1] Fungi do not make their own food (no chlorophyll) / not green plants.
(b) [1] Mushroom (edible) / yeast (for bread).
Marking: 1 mark difference, 1 mark example.

Total: 40 marks. Paper matches Section A (10) + B (6) + C (8) = 24 questions parts; top-level 20 questions, total marks 40.