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Primary 4 Science Practice Paper 1

Free P4 Science Practice Paper 1, HY3 AI version, with questions, answers, and syllabus-aligned practice for Singapore students.

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Primary 4 Science AI Generated Generated by Tencent HY3 Free Updated 2026-08-17

Questions

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Answers

TuitionGoWhere Practice Paper Answer Key — Science Primary 4 (Version 1)

Topic: Diversity
Total Marks: 40


Section A (10 marks)

1. C [1]
Teaching note: A mango tree is a living thing because it grows, needs water, and can make its own food. Wood, plastic, and stone do not show life processes.

2. C [1]
Teaching note: Living things are not made of metal as a defining trait. Needs food and reproduces are life characteristics; some living things (like plants) do not move from place to place, but movement is not the best opposite here — "made of metal" is clearly non-living.

3. B [1]
Teaching note: A lizard is an animal. It breathes air, moves, and eats other small animals.

4. A [1]
Teaching note: A cloud is non-living though found in nature. Dog, rose, mosquito are living.

5. B [1]
Teaching note: Scientists group living things by characteristics such as body structure and how they get food.

6. C [1]
Teaching note: A cat is a mammal and breathes with lungs. Fish use gills; earthworms breathe through skin; amoeba is microscopic and not lung-breathing.

7. C [1]
Teaching note: Leaves contain chlorophyll and make food by photosynthesis (P4 allowed concept of leaf function).

8. B [1]
Teaching note: All living things grow and develop. Not all can fly, are green, or live in water.

9. A [1]
Teaching note: Vertebrates (backbone) vs invertebrates is a real grouping method.

10. C [1]
Teaching note: Mushroom is a fungus, not plant or animal.


Section B (12 marks)

11. [2] Mark breakdown: 1 mark per correct characteristic.
Answers: e.g., "breathes", "eats food", "grows", "reproduces".
Teaching note: Living things carry out life processes. Any two valid traits score.

12. [2] 1 mark each.
Living: e.g., student, class plant. Non-living: e.g., desk, book, eraser.
Teaching note: Classroom living things are usually people or plants; non-living are objects.

13. [2] 1 mark for statement + 1 for elaboration.
e.g., "Plants make their own food using leaves, while animals eat other things."
Teaching note: This is a key P4 diversity difference.

14. [2] 1 mark purpose + 1 mark example.
e.g., "To study them easily. We can group by where they live or body features."
Teaching note: Grouping helps organisation and study.

15. [2] 1 mark per group.
e.g., "Birds (feathers)", "Fish (scales)" or "Mammals (fur)", "Reptiles (scales)".
Teaching note: Body covering is a classification feature.

16. [2] 1 mark: car is non-living; 1 mark: movement alone not enough.
Answer: "A car is non-living because it does not grow, reproduce, or need food. Moving is not proof of life."
Teaching note: Common mistake — thinking movement = alive.


Section C (8 marks)

17. [3]
(a) [1] Living: Mango tree, Goldfish, Grass.
(b) [1] Non-living: Eraser, Notebook, Balloon.
(c) [1] Reason: "It grows and makes food."
Teaching note: Use characteristics to decide.

18. [2] 1 mark per row (two examples each).
Sample:
Living (animal): cat, fish
Living (plant): rose, fern
Teaching note: Table must show correct group examples.

19. [2]
(a) [1] Bird.
(b) [1] Fish.
Teaching note: Feathers/beak = bird; scales/gills = fish.

20. [1]
Answer: paper bag (and note: leaf, beetle, snail are living).
Teaching note: Only paper bag is clearly non-living from list; if "beetle" and "snail" living, non-living = paper bag only. (Accept "paper bag" as the single non-living; the question asks two but only one is non-living — flag: student should identify only paper bag as non-living, the others are living, so the premise of two is incorrect; mark as 1 for paper bag.)


End of Answer Key