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Primary 3 Science Practice Paper 4

Free P3 Science Practice Paper 4, Ox AI 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 AI Generated Generated by Ox Alpha Updated 2026-08-27

Questions

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Answers

TuitionGoWhere Practice Paper - Science Primary 3

Answer Scheme — Theme: Diversity (Version 4 of 5)

Section A: Multiple Choice (Questions 1–10)

QAnswerExplanation
1BA mushroom is a fungus — a living thing. Stone, spoon and bottle are non-living.
2CThe kitten grew (1 kg → 4 kg) and moved by itself. Animals do not make their own food.
3BAll living things need air, water and food. Cars move but are non-living; plants are living things too.
4BMould grows and spreads, so it is living, but it is a fungus, not a plant.
5BFeathers, two legs, wings and a beak are features of birds.
6BDry scaly skin + lays eggs on land = reptile.
7CFerns are non-flowering plants; they reproduce by spores.
8CPlastic sheet is waterproof; paper, towel and cardboard absorb water.
9BFrosted glass lets light through but blurs the view, like material Z.
10CMetal did not break even at 10 kg, so it is the strongest tested.

Section B: Short Answer (Questions 11–15)

11. (½ mark × 4)

  • a fern — Living ✓
  • an iron nail — Non-living ✓
  • a mushroom — Living ✓
  • a raincoat — Non-living ✓

12. Any two (1 mark each):

  • It cannot grow.
  • It cannot reproduce.
  • It does not need air, water or food.
  • It cannot respond to its surroundings on its own (it only moves when the button is pressed).

13. (⅔ mark per correct cell, rounded to 2 marks)

MaterialBends easilyWaterproof
rubber band
cotton T-shirt
glass window pane

14. (⅔ mark each)

  • B. chicken → bird
  • C. snake → reptile
  • D. frog → amphibian

15. Devi should choose Box 2 (metal). Metal is strong and hard, so it does not crack or break easily when dropped. Ceramic is brittle and breaks easily. (Choice: 1 mark; reason using a property: 1 mark)

Section C: Open-Ended Questions (Questions 16–20)

16. (1 mark per row: group + acceptable feature)

AnimalGroupBody feature used
A (eagle)birdfeathers / beak / wings
B (crocodile)reptiledry, scaly skin
C (butterfly)insectsix legs / two antennae / wings
D (dolphin)mammalblowhole on top of head / smooth skin with tail fluke (not scales or feathers)

17. (a) Material C — no water (0 ml) passed through it. (1 mark) (b) Material A. It let the most water pass through (90 ml out of 100 ml), meaning it absorbs water best, so it can soak up water to dry the body. (Material choice: 1 mark; explanation using data: 2 marks)

18. Mei Ling's grouping is not completely correct. (1 mark)

  • The hibiscus plant is correctly a plant, and the butterfly and bird are correctly animals. (1 mark)
  • The mushroom is not a plant — it is a fungus. It does not have leaves, flowers or roots and cannot make its own food. (2 marks)

19. (1 mark each, any suitable property)

  • Window frame (aluminium): strong and hard; does not break easily; does not rust easily.
  • T-shirt (cotton): soft; absorbs sweat; flexible and comfortable to wear.
  • Drink bottle (glass): waterproof; transparent so you can see the drink inside.
  • Eraser (rubber): flexible; firm enough to rub off pencil marks without tearing the paper.

20. (a) Mould grows well in warm places. The warm cupboard allowed much more mould to grow than the cold refrigerator, showing mould needs warmth (and dampness) to grow well. (2 marks) (b) Any one observation (2 marks):

  • The amount of mould increased/grew and spread over the week — living things grow.
  • Mould grew only where conditions were suitable — living things need air, water, food and suitable surroundings to stay alive.

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