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Primary 5 Science Semestral Assessment 2 (End of Year) Paper 3

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

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Primary 5 Science From Real Exams Generated by Ox Alpha Updated 2026-08-27

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Questions

TuitionGoWhere Practice Paper - Science Primary 5

TuitionGoWhere Exam Practice (AI)

SA2 Practice Paper — Theme: Diversity (Version 3 of 5)

Field	Details
Subject:	Science
Level:	Primary 5
Paper:	SA2 Topical Practice Paper (Version 3)
Duration:	1 hour
Total Marks:	55

Name: ______________________ Class: ________ Date: ____________

Instructions

Answer all 20 questions.
Section A: Circle the number (1, 2, 3 or 4) of the correct answer.
Sections B–D: Write your answers in the spaces provided.
Marks for each question are shown in brackets [ ].
Check your answers before handing in.

Section A: Multiple Choice (Questions 1–5, 2 marks each, 10 marks)

Circle the correct option number.

1. Which of the following organisms is classified as a fungus? (1) Moss (2) Mushroom (3) Fern (4) Hibiscus [2]

2. Which characteristic is used to place an animal in the group mammals? (1) It lays eggs in water. (2) It has feathers and a beak. (3) It has hair or fur and feeds its young with milk. (4) It has moist skin and lives near water. [2]

3. Animal W has a backbone, does not have feathers, and has dry, scaly skin. Use the classification key below to identify the group Animal W belongs to.

Image pending generation: diagram for Q3.

(1) Birds (2) Reptiles (3) Amphibians (4) Invertebrates [2]

4. Which statement about bacteria is true? (

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TuitionGoWhere Practice Paper - Science Primary 5

TuitionGoWhere Exam Practice (AI)

SA2 Practice Paper — Theme: Diversity (Version 3 of 5)

Field	Details
Subject:	Science
Level:	Primary 5
Paper:	SA2 Topical Practice Paper (Version 3)
Duration:	1 hour
Total Marks:	55

Name: ______________________ Class: ________ Date: ____________

Instructions

Answer all 20 questions.
Section A: Circle the number (1, 2, 3 or 4) of the correct answer.
Sections B–D: Write your answers in the spaces provided.
Marks for each question are shown in brackets [ ].
Check your answers before handing in.

Section A: Multiple Choice (Questions 1–5, 2 marks each, 10 marks)

Circle the correct option number.

1. Which of the following organisms is classified as a fungus? (1) Moss (2) Mushroom (3) Fern (4) Hibiscus [2]

3. Animal W has a backbone, does not have feathers, and has dry, scaly skin. Use the classification key below to identify the group Animal W belongs to.

Image pending generation: diagram for Q3.

(1) Birds (2) Reptiles (3) Amphibians (4) Invertebrates [2]

4. Which statement about bacteria is true? (1) Bacteria are multicellular organisms. (2) Bacteria can only be seen with a microscope. (3) Bacteria make their own food like green plants. (4) Bacteria are classified as flowering plants. [2]

5. Which of the following is not a characteristic of all living things? (1) They grow. (2) They respond to changes around them. (3) They reproduce. (4) They make their own food. [2]

Section B: Short Answer (Questions 6–10, 3 marks each, 15 marks)

6. Mei Ling collected four organisms: a hibiscus plant, a moss plant, a mushroom and a bacterium. Complete the table by writing each organism under its correct heading. (1 mark for each correct row, maximum 3)

Flowering plant	Non-flowering plant	Fungus	Microorganism (bacterium)

7. Animal X lives only in water. It has fins and scales and breathes through gills throughout its life. Animal Y lives part of its life in water and part on land. It has moist skin, breathes through gills when young and through lungs when adult. (a) Name the group Animal X belongs to. [1] (b) Name the group Animal Y belongs to. [1] (c) State one similarity between Animal X and Animal Y. [1] [3]

8. An animal has six legs, three body parts and two pairs of wings. (a) Name the group the animal belongs to. [1] (b) State one other feature of this group of animals. [2] [3]

9. Match each object to the property of its material that makes it suitable. Write the letters (A, B, C) in the blanks.

Object	Property
Window pane → ______	A: It is waterproof.
Raincoat → ______	B: It allows light to pass through.
Spring of a bed → ______	C: It is springy and bends easily.

10. State two ways in which fungi are different from green plants. [3]

Section C: Structured Questions (Questions 11–15, 3 marks each, 15 marks)

11. Use this key to identify Animal Z: it has a backbone, has feathers, and swims in water but cannot fly. 1(a) Has a backbone → go to 2 1(b) No backbone → invertebrate 2(a) Has feathers → go to 3 2(b) No feathers → go to 4 3(a) Can fly → flying bird 3(b) Cannot fly → __________ Name the group Animal Z belongs to and state one other feature of this group. [3]

12. Give two ways microorganisms are useful to humans and one way they are harmful. [3]

13. Complete the table by ticking (✓) the correct group for each animal. Each animal belongs to exactly one group.

Animal	Fish	Amphibian	Reptile	Bird
Snake
Penguin
Frog
Shark

14. The whale lives in water like a fish, but scientists classify it as a mammal. Give two reasons why the whale is classified as a mammal. [3]

15. Ali wants to make an umbrella. He tests three materials: cotton cloth, plastic sheet and paper. (a) Which material is most suitable for the umbrella cover? [1] (b) Explain your answer based on the property of the material. [2] [3]

Section D: Longer Answer (Questions 16–20, 3 marks each, 15 marks)

16. Sort these animals into the correct groups: bat, crocodile, salmon, eagle, frog, butterfly. Copy and complete the table. Write each animal once.

Mammal	Reptile	Fish	Bird	Amphibian	Insect

17. Rina observed a fern and a hibiscus plant in the school garden. (a) State one difference in how the two plants reproduce. [1] (b) State one difference in the structures the two plants have. [2] [3]

Image pending generation: diagram for Q18.

18. Siti set up the experiment shown above to observe the growth of mould on bread. (a) What was she trying to find out? [1] (b) Which slice would have more mould after five days? [1] (c) Why did Siti use the same type and size of bread for both slices? [1] [3]

19. The body of a cooking pot is made of metal, but its handle is made of plastic. Explain why each material is suitable for its part of the pot. [3]

20. Complete the classification key below for the sparrow, lizard, goldfish and frog by filling in each blank.

1(a) ________________________ → lizard 1(b) Does not have dry, scaly skin → go to 2 2(a) Has feathers → sparrow 2(b) Has no feathers → go to 3 3(a) Lives only in water, has fins and gills → ____________ 3(b) Can live both on land and in water → ____________ [3]

— END OF PAPER —

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Answers

TuitionGoWhere Practice Paper - Science Primary 5

SA2 Practice Paper — Theme: Diversity (Version 3 of 5) — Answer Scheme

Total Marks: 55

Section A: Multiple Choice (2 marks each)

Q	Answer	Explanation
1	(2) Mushroom	Mushrooms are fungi; moss and fern are non-flowering plants; hibiscus is a flowering plant.
2	(3)	Mammals have hair/fur and feed their young with milk.
3	(2) Reptiles	Backbone: Yes → feathers: No → dry, scaly skin: Yes → Reptiles.
4	(2)	Bacteria are unicellular and visible only under a microscope.
5	(4)	Not all living things make their own food (e.g. animals, fungi).

Section B (3 marks each)

6. Flowering plant: hibiscus. Non-flowering plant: moss. Fungus: mushroom. Microorganism: bacterium. (1 mark per correct entry, max 3)

7. (a) Fish. [1] (b) Amphibian. [1] (c) Any one: both are vertebrates / both live in water / both breathe using gills at some stage of life. [1]

8. (a) Insect. [1] (b) Any one, with brief explanation: has an exoskeleton / has a pair of antennae / has three pairs of legs (six legs) / body divided into head, thorax and abdomen. [2]

9. Window pane → B (allows light through); Raincoat → A (waterproof); Spring → C (springy, bends easily). (1 mark each)

10. Any two:

Fungi do not have chlorophyll and cannot make their own food; green plants can.
Fungi do not have leaves, stems or roots.
Most fungi reproduce by spores (many green plants reproduce by seeds). [3]

Section C (3 marks each)

11. Group: flightless bird (e.g. penguin group). Feature: any one — has feathers / has a beak / lays eggs / has two legs / warm-blooded / vertebrate. [3]

12. Useful (any two): yeast makes bread rise; used to make yoghurt/cheese; decomposers break down dead matter and recycle nutrients. Harmful (any one): cause diseases; spoil food. [3]

13. Snake — Reptile ✓; Penguin — Bird ✓; Frog — Amphibian ✓; Shark — Fish ✓. (1 mark per correct pair of rows, i.e. ~1 mark each, max 3)

14. Any two: the whale gives birth to live young; it feeds its young with milk; it breathes with lungs; it has hair (some) and is warm-blooded. [3]

15. (a) Plastic sheet. [1] (b) Plastic is waterproof, so it keeps rain out; cotton absorbs water and paper tears/soaks through when wet. [2]

Section D (3 marks each)

16. Mammal: bat. Reptile: crocodile. Fish: salmon. Bird: eagle. Amphibian: frog. Insect: butterfly. (½ mark each × 6 = 3)

17. (a) The fern reproduces by spores; the hibiscus reproduces by seeds formed in flowers. [1] (b) Any one, explained: the fern has no flowers or fruits; the hibiscus has flowers and fruits. [2]

18. (a) To find out whether temperature (warm vs cold place) affects the growth of mould on bread. [1] (b) Slice A (warm cupboard). [1] (c) To ensure a fair test — only the location/temperature was changed; all other conditions stayed the same. [1]

19. Metal conducts heat well, so heat passes quickly through the pot body to cook the food evenly. Plastic is a poor conductor of heat, so the handle does not get hot and can be held safely. (1 mark for metal property/use, 1 for plastic property, 1 for linking to safety/cooking)

20. 1(a) Has dry, scaly skin → lizard. 3(a) → goldfish. 3(b) → frog. (1 mark each)

— END OF ANSWER SCHEME —