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Primary 5 Science Semestral Assessment 2 (End of Year) Paper 4

Free P5 Science SA2 Paper 4, GLM5.3 Exam version, with questions, answers, and syllabus-aligned practice for Singapore students.

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Primary 5 Science From Real Exams Generated by GLM 5.3 Flash Updated 2026-08-27
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Answers

TuitionGoWhere Practice Paper - Science Primary 5 (SA2)

Answer Key - Version 4 (Topic Focus: Diversity)

Total Marks: 50

Section A: Multiple-Choice Questions (Questions 1–5)

Question 1 (2 marks) — B It spreads and becomes larger over several days. Growth shows it is a living thing.

Question 2 (2 marks) — B Shark and seahorse are both covered with scales and breathe using gills.

Question 3 (2 marks) — B Plastic does not absorb water, but paper absorbs water, so plastic keeps the wearer dry.

Question 4 (2 marks) — A Fern does not bear flowers, so it is a non-flowering plant.

Question 5 (2 marks) — C Rubber comes from rubber trees, which were once living things.

Section B: Short-Answer Questions (Questions 6–10)

Question 6 (2 marks) Any two: Living things grow; respire/need air, water and food; reproduce; respond to changes around them. (1 mark each)

Question 7 (3 marks) (a) Hair/fur (b) Eggs (c) Eggs (1 mark each)

Question 8 (2 marks) Any two: It cannot reproduce; it does not grow; it does not need food, water and air; it cannot respond to changes on its own (it needs a person to press the button). (1 mark each)

Question 9 (1 mark) Any one: It is waterproof/does not absorb water; it is light; it is flexible; it can be made transparent; it does not break easily.

Question 10 (2 marks) No, she is not correct. (1 mark) Mould is a fungus, not a plant. It does not have leaves and cannot make its own food. (1 mark)

Section C: Data-Based and Structured Questions (Questions 11–15)

Question 11 (2 marks) All animals in Group P have hair/fur covering their bodies. (Also acceptable: they give birth to live young.)

Question 12 (3 marks) (a) Spores (b) Spores (c) Fungus/Fungi (1 mark each)

Question 13 (3 marks) (a) Plastic strip (b) Glass strip (c) Plastic strip. It bent a lot and returned to its original shape without breaking, so it is flexible and would not crack when the case bends. (1 mark)

Question 14 (3 marks) (a) Any two differences (1 mark each):

  • The fish is covered with scales but the dolphin has skin.
  • The fish breathes through gills but the dolphin breathes through lungs.
  • The fish lays eggs but the dolphin gives birth to live young and suckles its young. (b) Mammals (1 mark)

Question 15 (4 marks) (a) Objects that absorb water / Objects that can soak up water (1 mark) (b) Objects that do not absorb water / Waterproof objects (1 mark) (c) Group Y. Rubber does not absorb water, like the other objects in Group Y. (1 mark) (d) Any one property with examples, e.g. Flexibility: flexible objects (sponge, tissue paper, cloth) versus stiff objects (metal spoon, glass tile, plastic sheet). Also acceptable: hardness, or whether the object breaks easily when bent. (1 mark)

Section D: Open-Ended Application Questions (Questions 16–20)

Question 16 (3 marks) Any correct three-group classification with reasons, e.g.:

  • Group 1: Grass — flowering plant (bears flowers).
  • Group 2: Moss and fern — non-flowering plants (reproduce by spores).
  • Group 3: Mushroom — fungus (not a plant; reproduces by spores and cannot make its own food). (1 mark per correctly classified group with reason)

Question 17 (4 marks) Nylon fabric. (1 mark) Any two explanations (from the table):

  • It is strong, so it can carry many heavy books without tearing. (1 mark)
  • It does not absorb water, so Mei's books stay dry when she walks in the rain. (1 mark)
  • It is very light, so the bag will not add much weight. (1 mark)
  • It is very flexible, so it is comfortable to carry. (1 mark)

Question 18 (3 marks) (a) Observation 1: The plant had grown taller (growth). (1 mark) Observation 2: Its leaves turned towards the window (responding to light/changes around it). (1 mark) (b) Water is a basic need of plants. Without water, the plant cannot survive and will wilt/die. (1 mark)

Question 19 (2 marks) The mould and the fern are living. (1 mark) Reason: Both grow, reproduce and need air, water and food, while the robot and stool do not. (1 mark)

Question 20 (3 marks) Plastic-coated fabric. (1 mark) Any two explanations (from the table):

  • It does not absorb water, so rain will not soak through the umbrella. (1 mark)
  • It is strong, so it will not tear easily in wind/rain. (1 mark)
  • It is very flexible, so it can be folded and opened easily. (1 mark)

End of Answer Key