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

Free P3 Science SA2 Paper 2, GLM5.3 Exam version, with questions, answers, and syllabus-aligned practice for Singapore students.

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Primary 3 Science From Real Exams Generated by GLM 5.3 Flash Updated 2026-08-27

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TuitionGoWhere Practice Paper - Science Primary 3

Primary 3 Science Quiz - Diversity (SA2 Practice, Version 2)

TuitionGoWhere Exam Practice (AI)

Subject: Science Level: Primary 3 Paper: SA2 Practice Paper - Topic: Diversity (Version 2 of 5) Duration: 1 hour Total Marks: 40 Name: ______________________ Class: ______________________ Date: ______________________ Score: ________ / 40

Instructions to students:

Answer ALL 20 questions.
Section A (Questions 1-5): Circle the correct answer. Each question carries 1 mark.
Section B (Questions 6-10) and Section C (Questions 11-15): Write your answers in the spaces provided. Each question carries 2 marks.
Section D (Questions 16-20): Write your answers in the spaces provided. Each question carries 3 marks.
Check your work before handing in.

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TuitionGoWhere Practice Paper - Science Primary 3

Primary 3 Science Quiz - Diversity (SA2 Practice, Version 2)

TuitionGoWhere Exam Practice (AI)

Instructions to students:

Answer ALL 20 questions.
Section A (Questions 1-5): Circle the correct answer. Each question carries 1 mark.
Section B (Questions 6-10) and Section C (Questions 11-15): Write your answers in the spaces provided. Each question carries 2 marks.
Section D (Questions 16-20): Write your answers in the spaces provided. Each question carries 3 marks.
Check your work before handing in.

Section A: Multiple-Choice Questions (5 marks)

Question 1. Which one of the following is a living thing? (1) rock (2) wooden chair (3) moss (4) glass bottle

Question 2. Which group below contains ONLY living things? (1) mushroom, fern, ant (2) bread mould, table, cat (3) bird, stone, seaweed (4) bacteria, water, grasshopper

Question 3. Living things can be classified into plants, animals, fungi and ______________. (1) rocks (2) bacteria (3) machines (4) minerals

Question 4. Which animal can be grouped with the guppy because both give birth to young alive? (1) chicken (2) platypus (3) swordtail fish (4) snake

Question 5. Which material is most suitable for making an umbrella canopy? (1) cardboard (2) waterproof fabric (3) tissue paper (4) sponge

Section B: Short Answer Questions (10 marks)

Question 6. State two differences between living things and non-living things.

Question 7. Ali observed an organism. It cannot make its own food and grows on decaying bread. Is the organism a plant? Explain your answer.

Question 8. Classify the following into plants and animals: hibiscus, dolphin, orchid, eagle.

Question 9. Give one reason why we classify things into groups.

Question 10. Mei Ling saw an organism under a microscope. It is made of only one cell. Name the group it belongs to.

Section C: Short Answer Questions (10 marks)

Question 11. The table shows three animals: rabbit, shark, sparrow. Write one similarity and one difference between them in terms of how they reproduce.

Question 12. Why are fungi and bacteria important in nature? Give one reason.

Question 13. Ravi wants to carry hot soup. Should he use a metal bowl or a plastic bowl? Give a reason for your choice based on the property of the material.

Question 14. State two characteristics that all living things have.

Question 15. A new organism is found. It has leaves, roots and flowers. Which group does it belong to? Give a reason.

Section D: Longer Answer Questions (15 marks)

Question 16. Jane classified four objects into two groups, A and B. Group A: rubber ball, plastic ruler Group B: iron nail, steel spoon State the property she used to classify the objects.

Question 17. Compare a mushroom and a fern. State one similarity and one difference between them.

Question 18. Siti placed a fish in a tank of boiled (previously boiled and cooled) water. The fish died after some time. Explain why.

Question 19. Ben has three cups made of glass, paper and metal. He wants a cup that keeps his cold drink cold for the longest time. Which cup should he choose? Explain your answer using the properties of the materials.

Question 20. Draw a classification chart (with boxes and arrows) to classify living things into their four main groups. Then write one example for each group.

END OF PAPER

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Answers

TuitionGoWhere Practice Paper - Answer Key

Primary 3 Science Quiz - Diversity (SA2 Practice, Version 2) - Answers

Total Marks: 40

Section A: Multiple-Choice Questions (1 mark each)

Question 1. (3) moss Question 2. (1) mushroom, fern, ant Question 3. (2) bacteria Question 4. (3) swordtail fish Question 5. (2) waterproof fabric

Section B: Short Answer Questions (2 marks each)

Question 6. Any two differences, e.g.: Living things can grow/reproduce/respond to changes/need food, air and water; non-living things cannot do these. (1 mark per correct difference)

Question 7. No, it is not a plant. Plants make their own food, but this organism cannot make its own food and grows on decaying matter, so it is a fungus (bread mould).

Question 8. Plants: hibiscus, orchid. Animals: dolphin, eagle. (1 mark for each correctly classified pair)

Question 9. Classification makes it easier to study, find and identify things / helps us organise things so we can understand them better.

Question 10. Bacteria (single-celled organisms).

Section C: Short Answer Questions (2 marks each)

Question 11. Similarity: All reproduce / have young. Difference: Rabbit gives birth to young alive; shark and sparrow lay eggs. (Accept other reasonable reproduction-based answers.)

Question 12. They break down dead plants and animals (decomposers), returning nutrients to the soil / they recycle nutrients in nature.

Question 13. Plastic bowl. Metal conducts heat quickly, so the bowl would become too hot to hold; plastic conducts heat slowly (poor conductor of heat), so it stays comfortable to hold.

Question 14. Any two: They need food, air and water; they grow; they respond to changes; they reproduce; they die.

Question 15. Plant group. It has leaves, roots and flowers, which are parts of a plant; plants can make their own food.

Section D: Longer Answer Questions (3 marks each)

Question 16. She used flexibility (or ability to bend). Group A objects are flexible (can bend); Group B objects are stiff/hard (cannot bend easily). Also accept magnetic vs non-magnetic if justified: iron nail and steel spoon are magnetic; rubber ball and plastic ruler are not.

Question 17. Similarity: Both are living things / fungi-and-plant comparison: both grow and reproduce (both are non-motile). Difference: Fern is a plant and can make its own food; mushroom is a fungus and cannot make its own food (grows on decaying matter).

Question 18. Boiling removes dissolved air/oxygen from the water. Fish need dissolved oxygen in water to breathe (through their gills), so without oxygen the fish died.

Question 19. He should choose the paper cup... Correction: he should choose the cup that conducts heat the slowest. Paper is a poor conductor of heat, so heat from outside transfers into the drink most slowly, keeping the cold drink cold longest. Metal conducts heat fastest (worst choice); glass is intermediate. Accept: choose the paper cup because paper is a poor conductor of heat.

Question 20. Chart must show "Living Things" splitting into four groups: Plants (e.g., hibiscus/fern), Animals (e.g., cat/fish), Fungi (e.g., mushroom/mould), Bacteria (e.g., harmful/useful bacteria such as Lactobacillus). Marks: 1 mark for correct four-group split, 1 mark for clear chart structure (boxes/arrows), 1 mark for one valid example per group.

END OF ANSWER KEY