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Primary 6 PSLE Science Semestral Assessment 2 (End of Year) Paper 1

Free P6 PSLE Science SA2 Paper 1, Ox Exam version, with questions, answers, and PSLE-focused practice for Singapore students.

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Primary 6 PSLE Science From Real Exams Generated by Ox Alpha Updated 2026-08-27

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Questions

TuitionGoWhere Practice Paper - Science Primary 6 PSLE

TuitionGoWhere Exam Practice (AI)

Subject: Science Level: Primary 6 PSLE Paper: SA2 Practice Paper - Version 1 of 5 Topic Focus: Diversity Duration: 45 minutes Total Marks: 50

Name: ______________________ Class: ____________ Date: ______________ Score: ________ / 50

Instructions to students:

Answer ALL 20 questions.
Section A: write the letter (A, B, C or D) of the correct answer in the brackets provided.
Sections B to D: write your answers in the spaces provided.
The number of marks is shown in brackets [ ] at the end of each question or part.
Check your work if you have time left.

Section A: Multiple-Choice Questions (Questions 1-5) — 10 marks

Write the letter of the correct answer in the brackets. Each question carries 2 marks.

1. Many people think a whale is a fish because it lives in the sea. Which statement shows why scientists classify the whale as a mammal?

A It has fins and can swim well. B It gives birth to live young and feeds them with milk. C It breathes through gills while swimming. D Its body is covered with smooth scales.

Answer: ( ______ ) [2]

2. Which statement about bread mould is correct?

A It makes its own food just like green plants. B It can only be seen using a microscope. C It does not contain chlorophyll and cannot make its own food. D It is classified as a plant because it grows on dead matter.

Answer: ( ______ ) [2]

3. The bird's nest fern does not bear flowers. It reproduces by __________ and is therefore classified as a __________ plant.

A seeds; flowering B spores; non-flowering C spores; flowering D seeds; non-flowering

Answer: ( ______ ) [2]

4. Mei Ling is choosing a material to make a raincoat. Which property of the material is the most important?

A It is able to stretch when pulled. B It does not allow water to pass through it. C It is able to sink in water. D It allows light to pass through it.

Answer: ( ______ ) [2]

5. Ravi observed four animals in the school garden: a grasshopper, a goldfish, an earthworm and a chicken. Which animals are invertebrates?

A grasshopper and goldfish B goldfish and chicken C grasshopper and earthworm D earthworm and chicken

Answer: ( ______ ) [2]

Section A subtotal: 10 marks

Section B: Short-Answer Questions (Questions 6-10) — 10 marks

Each question carries 2 marks.

6. A spider is often mistaken for an insect. State one difference between a spider and an insect that shows the spider is not an insect.

________________________________________________________________ [2]

7. The classification key below sorts four animals into their groups.

Image pending generation: figure for Q7.

Use the key above to identify the group of each animal:

(a) A snake: ______________________

(b) A dolphin: ______________________ [2]

8. Mei found a mushroom growing on a rotting log. State one reason why the mushroom is classified as a fungus and not a plant.

________________________________________________________________ [2]

9. A towel is made of cotton. State two properties of cotton that make it suitable for making towels.

(i) ________________________________________________________________

(ii) ________________________________________________________________ [2]

10. James left a slice of bread in a warm, damp cupboard. After three days, fuzzy black patches appeared on the bread.

(a) What are these patches? ______________________

(b) State one condition that helped them grow. ______________________ [2]

Section B subtotal: 10 marks

Section C: Structured Questions (Questions 11-15) — 15 marks

Each question carries 3 marks.

11. The table shows observations of four animals P, Q, R and S.

Animal	Body covering	Reproduction	Other information
P	hair	gives birth to live young	feeds its young with milk
Q	wet scales	lays eggs in water	breathes through gills
R	feathers	lays eggs on land	has a beak and wings
S	dry scales	lays eggs on land	breathes through lungs

(a) Identify the animal group of animal P: ______________________

(b) Give two reasons for your answer in (a).

Reason 1: ______________________________________________________

Reason 2: ______________________________________________________ [3]

12. Complete the classification chart below by filling in boxes A, B and C.

Animals are first divided into (A) __________ and (B) __________. Vertebrates are then divided into five groups: fish, amphibians, reptiles, birds and (C) __________. [3]

13. The table shows the properties of four materials.

Material	Strong	Flexible	Waterproof	Absorbs water
W	Yes	Yes	Yes	No
X	No	Yes	Yes	No
Y	Yes	No	No	Yes
Z	Yes	No	Yes	No

(a) Which material is most suitable for making an umbrella canopy? ________

(b) Give one reason for your choice in (a).

14. Sarah collected four plants: moss, bird's nest fern, hibiscus and pine tree.

(a) Which two plants are non-flowering plants? ______________________

(b) How does the bird's nest fern reproduce? ______________________

15. Ben used a microscope to observe organism T. He recorded: single-celled, no chlorophyll, found in pond water, reproduces very quickly.

(a) Can organism T be classified as a plant? ________

(b) Explain your answer in (a). ______________________

Section C subtotal: 15 marks

Section D: Open-Ended Questions (Questions 16-20) — 15 marks

Each question carries 3 marks.

16. Animal X has a backbone, dry scaly skin and lays leathery eggs on land. It breathes through lungs.

Identify the animal group of animal X and give three reasons for your answer.

Group: ______________________

Reasons: ________________________________________________________

________________________________________________________________ [3]

17. Plants A and B were observed in a garden. Plant A bears flowers and fruits. Plant B has no flowers and grows spores on the underside of its leaves.

(a) Classify each plant as flowering or non-flowering.

Plant A: ______________ Plant B: ______________

(b) State one other difference between flowering and non-flowering plants.

________________________________________________________________ [3]

18. Sam tested strips of four different materials of the same size and thickness. He hung weights on each strip until it broke. His results are shown below.

Material	Number of weights held before breaking
J	4
K	12
L	8
M	2

(a) Which material is the strongest? ________

(b) Why did Sam use strips of the same size and thickness? ______________________

(c) State one property, other than strength, that should be considered when choosing a material to make a school bag. ______________________ [3]

19. A lion is an animal that has hair, gives birth to live young and feeds its young with milk.

Complete the classification of the lion below:

(a) The lion is a __________ (vertebrate / invertebrate).

(b) The lion belongs to the animal group called __________.

________________________________________________________________ [3]

20. A baker adds yeast to bread dough before baking. The dough rises and becomes fluffy.

(a) What is yeast? ______________________

(b) Explain why the dough rises. ______________________

Section D subtotal: 15 marks

END OF PAPER

Total: 50 marks

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Answers

TuitionGoWhere Practice Paper - Science Primary 6 PSLE

Answer Key - SA2 Practice Paper, Version 1 of 5

Topic Focus: Diversity | Total Marks: 50

Section A: Multiple-Choice Questions (Questions 1-5) — 10 marks

(2 marks each)

1. B — It gives birth to live young and feeds them with milk. [2]

2. C — It does not contain chlorophyll and cannot make its own food. [2]

3. B — spores; non-flowering. [2]

4. B — It does not allow water to pass through it. [2]

5. C — grasshopper and earthworm. [2]

Section A subtotal: 10 marks

Section B: Short-Answer Questions (Questions 6-10) — 10 marks

(2 marks each)

6. A spider has eight legs / two body segments, while an insect has six legs / three body segments. Any one valid difference accepted. [2]

7. (a) Snake: Reptile — it has dry scales and lays eggs on land. [1] (b) Dolphin: Mammal — it has no feathers, no dry scaly egg-laying, but has hair and feeds its young with milk. [1]

8. The mushroom does not contain chlorophyll and cannot make its own food; it feeds on dead/rotting matter. (Any one valid reason.) [2]

9. Any two: (i) Cotton is soft and comfortable against the skin. (ii) Cotton absorbs water well (soaks up sweat/water). (iii) Cotton is flexible/lightweight. [2]

10. (a) The patches are mould (a fungus). [1] (b) Warmth and moisture/dampness helped the mould grow. [1]

Section B subtotal: 10 marks

Section C: Structured Questions (Questions 11-15) — 15 marks

(3 marks each)

11. (a) P is a mammal. [1] (b) Any two:

It has hair as its body covering.
It gives birth to live young.
It feeds its young with milk. [2]

12. (A) Vertebrates (animals with backbones) [1] (B) Invertebrates (animals without backbones) [1] (C) Mammals [1]

13. (a) Material W [1] (b) W is strong, flexible and waterproof, and does not absorb water, so it keeps rain out and will not tear easily. [1] (c) Material Y — it absorbs water well. [1]

14. (a) Moss and bird's nest fern. [1] (b) It reproduces by spores. [1] (c) The hibiscus bears flowers (and seeds) while the moss does not bear flowers (reproduces by spores). [1]

15. (a) No. [1] (b) It has no chlorophyll and cannot make its own food, which all plants can do. [1] (c) Bacteria (or protozoa/single-celled microorganism group). [1]

Section C subtotal: 15 marks

Section D: Open-Ended Questions (Questions 16-20) — 15 marks

(3 marks each)

16. Group: Reptile. [1] Reasons (any three):

It has a backbone (is a vertebrate).
It has dry scaly skin.
It lays leathery eggs on land.
It breathes through lungs. [2]

17. (a) Plant A: Flowering. Plant B: Non-flowering. [1] (b) Flowering plants reproduce by seeds (formed in flowers/fruits); non-flowering plants reproduce by spores. [2]

18. (a) Material K — it held the greatest number of weights (12) before breaking. [1] (b) To ensure a fair test — only the type of material was changed; all other variables were kept the same. [1] (c) Flexibility / durability / waterproofness / lightness (any one reasonable property). [1]

19. (a) Vertebrate. [1] (b) Mammals. [1] (c) It breathes through lungs / has hair or fur covering its body / is warm-blooded (any characteristic not already stated). [1]

20. (a) Yeast is a microorganism (a fungus). [1] (b) Yeast respires and produces carbon dioxide gas; the gas trapped in the dough causes it to rise and become fluffy. [1] (c) Some microorganisms cause food to spoil / cause diseases (e.g., tooth decay, flu) / cause mould on food. [1]

Section D subtotal: 15 marks

TOTAL: 50 marks