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Primary 3 Science Practice Paper 1

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Primary 3 Science AI Generated Generated by LongCat 2.0 LLM Updated 2026-08-17

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TuitionGoWhere Practice Paper - Science Primary 3

TuitionGoWhere Practice Paper (AI)

Subject: Science Level: Primary 3 Topic: Diversity (Diversity of Living and Non-Living Things) Paper: Practice Paper 1 of 5 Duration: 40 minutes Total Marks: 40

Name: ____________________ Class: ____________________ Date: ____________________

Instructions

Answer ALL questions.
Write your answers in the spaces provided.
For multiple-choice questions, write only the letter (a, b, c, or d) in the answer space.
Show your working clearly where required.
The number of marks for each question is shown in brackets ( ).

Section A: Multiple Choice (10 marks)

Questions 1–10: Choose the correct answer. Each question carries 1 mark.

1. Which of the following is a living thing?

(a) A plastic cup (b) A wooden chair (c) A goldfish (d) A rubber ball

Answer: _______________

2. Which is NOT a characteristic of living things?

(a) They can grow. (b) They can reproduce. (c) They are made of plastic. (d) They need water to survive.

Answer: _______________

3. A mushroom is classified as a type of:

(a) Plant (b) Animal (c) Fungus (d) Bacteria only

Answer: _______________

4. Which living thing below is an insect?

(a) Frog (b) Eagle (c) Ant (d) Lizard

Answer: _______________

5. Which of the following is a non-living thing that was once part of a living thing?

(a) A growing seedling (b) A piece of wood from a fallen tree (c) A swimming fish (d) A blooming flower

Answer: _______________

6. Living things respond to changes in their surroundings. Which is an example of this?

(a) A rock sitting on the ground (b) A cat running away from a loud noise (c) A ball rolling down a slope (d) A book placed on a shelf

Answer: _______________

7. Which group of living things can make their own food?

(a) Animals (b) Fungi (c) Plants (d) Bacteria

Answer: _______________

8. A frog is classified as:

(a) A reptile (b) An amphibian (c) A mammal (d) A bird

Answer: _______________

9. Which of the following is NOT a characteristic of living things?

(a) They need air. (b) They can move by themselves. (c) They never change. (d) They can reproduce.

Answer: _______________

10. Which animal below is a mammal?

(a) Crocodile (b) Penguin (c) Dolphin (d) Snake

Answer: _______________

Section B: True or False (10 marks)

Questions 11–12: State whether each statement is True or False. Each question carries 1 mark.

11. All living things need food, water, and air to survive.

Answer: _______________

12. A toy car is a living thing because it can move.

Answer: _______________

Questions 13–15: State whether each statement is True or False and explain your answer in one sentence. Each question carries 2 marks.

13. A seed that has just been planted in soil is a living thing.

Answer: _______________

Explanation: _______________________________________________________________

14. Mushrooms are non-living things because they do not move around like animals.

Answer: _______________

Explanation: _______________________________________________________________

15. A balloon that is being inflated is showing the characteristic of growth.

Answer: _______________

Explanation: _______________________________________________________________

Section C: Structured Questions (20 marks)

Answer all questions. Write your answers in the spaces provided.

16. The table below lists some objects. Classify each object as Living or Non-living by writing the correct word in the second column. (4 marks)

Object	Living or Non-living?
(a) Butterfly
(b) Pencil
(c) Fern plant
(d) Cloud

17. Study the list of living things below:

Cat, Eagle, Goldfish, Frog, Lizard, Ant

(a) Sort the animals into the correct groups by writing their names in the table below. (4 marks)

Group	Animals
Mammal
Bird
Fish
Amphibian
Reptile
Insect

(b) Name ONE characteristic that ALL the living things in the list above share. (1 mark)

18. Mei Ling found the following items during a walk at MacRitchie Reservoir: a monitor lizard, a rain tree, a plastic bottle, and a mushroom.

(a) Classify each item as Living or Non-living. (2 marks)

Item	Living or Non-living?
Monitor lizard
Rain tree
Plastic bottle
Mushroom

(b) For any ONE living thing in the table above, name TWO characteristics of living things that it shows. (2 marks)

Living thing: ____________________

Characteristic 1: ___________________________________________________________

Characteristic 2: ___________________________________________________________

19. Wei Jun says: "A car is a living thing because it can move and it needs petrol to go."

(a) Is Wei Jun correct? Write Yes or No. (1 mark)

Answer: _______________

(b) Explain your answer using TWO reasons. (2 marks)

Reason 1: _______________________________________________________________

Reason 2: _______________________________________________________________

20. The diagram below shows a simple food chain.

Image pending generation for this question.

Grass → Grasshopper → Frog → Snake

(a) Name ONE characteristic of living things that the grass shows. (1 mark)

(b) Which animal in the food chain is a reptile? (1 mark)

Difference 1: _______________________________________________________________

Difference 2: _______________________________________________________________

End of Paper

This practice paper was generated using syllabus-aligned templates. It is designed to complement classroom learning and is not derived from any specific past-year examination paper.

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Answers

TuitionGoWhere Practice Paper - Science Primary 3

Answer Key — Practice Paper 1 of 5

Subject: Science (Primary 3) Topic: Diversity (Diversity of Living and Non-Living Things) Total Marks: 40

Section A: Multiple Choice (10 marks)

1. Answer: (c) A goldfish [1 mark]

Explanation: A goldfish is a living thing because it needs food, water, and air; it can grow, reproduce, and respond to changes. A plastic cup, wooden chair, and rubber ball are non-living things.

Marking note: Award 1 mark for (c) only.

2. Answer: (c) They are made of plastic. [1 mark]

Explanation: Being made of plastic is not a characteristic of living things. Living things can grow, reproduce, and need water to survive. "They are made of plastic" describes a material property, not a life process.

Marking note: Award 1 mark for (c) only.

3. Answer: (c) Fungus [1 mark]

Explanation: A mushroom is a type of fungus. Fungi are a separate group of living things that are different from plants, animals, and bacteria.

Marking note: Award 1 mark for (c) only. Common mistake: students may select (a) Plant because mushrooms grow in soil like plants.

4. Answer: (c) Ant [1 mark]

Explanation: An ant is an insect. Insects have three body parts (head, thorax, abdomen) and six legs. A frog is an amphibian, an eagle is a bird, and a lizard is a reptile.

Marking note: Award 1 mark for (c) only.

5. Answer: (b) A piece of wood from a fallen tree [1 mark]

Explanation: Wood was once part of a living tree. Although the tree has fallen and the wood no longer shows all characteristics of living things, it was originally part of a living organism. A growing seedling, swimming fish, and blooming flower are all currently living.

Marking note: Award 1 mark for (b) only. This question tests the concept that non-living things can originate from living things.

6. Answer: (b) A cat running away from a loud noise [1 mark]

Explanation: Running away from a loud noise shows that the cat is responding to a change in its surroundings. This is a characteristic of living things. A rock, ball, and book do not respond on their own.

Marking note: Award 1 mark for (b) only. Common mistake: students may choose (c) because a ball moves, but it moves due to an external force (gravity), not by itself.

7. Answer: (c) Plants [1 mark]

Explanation: Plants can make their own food through photosynthesis using sunlight, water, and carbon dioxide. Animals and fungi cannot make their own food.

Marking note: Award 1 mark for (c) only.

8. Answer: (b) An amphibian [1 mark]

Explanation: Frogs are amphibians. Amphibians can live both in water and on land. They have moist skin and typically begin life in water before moving to land as adults.

Marking note: Award 1 mark for (b) only. Common mistake: students may confuse frogs with reptiles because both can live on land.

9. Answer: (c) They never change. [1 mark]

Explanation: "They never change" is NOT a characteristic of living things. In fact, living things do change — they grow, respond to stimuli, and go through life cycles. The statement is false and therefore the correct answer to "which is NOT a characteristic."

Marking note: Award 1 mark for (c) only. This is a negative question; students must identify which option is NOT a characteristic.

10. Answer: (c) Dolphin [1 mark]

Explanation: A dolphin is a mammal. Mammals breathe air with lungs, give birth to live young, and feed their young milk. Although dolphins live in water, they are not fish. A crocodile and snake are reptiles; a penguin is a bird.

Marking note: Award 1 mark for (c) only. Common mistake: students may think dolphins are fish because they live in water and have a streamlined body.

Section B: True or False (10 marks)

11. Answer: True [1 mark]

Explanation: All living things need food, water, and air (oxygen/carbon dioxide) to survive. These are basic needs of life.

Marking note: Award 1 mark for True only.

12. Answer: False [1 mark]

Explanation: A toy car is non-living. Although it can move, it moves only when a person pushes it or when a motor is powered by batteries. It does not move by itself. It also cannot grow, reproduce, or respond to changes on its own.

Marking note: Award 1 mark for False only.

13. Answer: True [1 mark] + Explanation: A seed is living because it can germinate and grow into a new plant, showing the characteristics of growth and reproduction. [1 mark]

Explanation: A seed contains a tiny living plant (embryo) inside. When given water, air, and warmth, it will germinate and grow. This shows that the seed is a living thing even before it sprouts.

Marking note: Award 1 mark for True and 1 mark for a valid explanation. Accept any explanation that mentions the seed can grow/germinate or is capable of becoming a living plant.

14. Answer: False [1 mark] + Explanation: Mushrooms are living things (fungi) because they can grow, reproduce, and need food and water to survive, even though they do not move around like animals. [1 mark]

Explanation: Not all living things move around. Plants and fungi stay in one place but are still living because they grow, reproduce, and need food and water. Movement like that of animals is not the only way living things move.

Marking note: Award 1 mark for False and 1 mark for a valid explanation. Accept any explanation that states mushrooms are fungi/living things and can grow or reproduce.

15. Answer: False [1 mark] + Explanation: A balloon being inflated is not showing growth because the balloon itself is not a living thing; it is only expanding due to air being pumped into it from outside. [1 mark]

Explanation: Growth in living things means an increase in the number of cells or the size of the organism from within. A balloon expands because air is forced into it externally — this is not biological growth.

Marking note: Award 1 mark for False and 1 mark for a valid explanation. Accept any explanation that distinguishes biological growth from physical expansion caused by external force.

Section C: Structured Questions (20 marks)

16. [4 marks — 1 mark per correct classification]

Object	Living or Non-living?
(a) Butterfly	Living
(b) Pencil	Non-living
(c) Fern plant	Living
(d) Cloud	Non-living

Explanation:

(a) A butterfly is a living thing (insect) — it can grow, reproduce, move by itself, and respond to changes.
(b) A pencil is non-living — it cannot grow, reproduce, or move by itself.
(c) A fern plant is a living thing — it can grow, make its own food, and reproduce.
(d) A cloud is non-living — it is made of water droplets and does not show characteristics of life.

Marking note: Award 1 mark for each correct classification. No half marks.

17. [5 marks total]

(a) [4 marks — award 2 marks for 5–6 correct, 1 mark for 3–4 correct, 0 marks for fewer than 3 correct]

Group	Animals
Mammal	Cat
Bird	Eagle
Fish	Goldfish
Amphibian	Frog
Reptile	Lizard
Insect	Ant

Explanation: Each animal belongs to a specific group based on its characteristics:

Cat: mammal (has fur, feeds young milk, breathes with lungs)
Eagle: bird (has feathers, wings, lays eggs)
Goldfish: fish (has fins, gills, lives in water)
Frog: amphibian (can live in water and on land, moist skin)
Lizard: reptile (has scaly skin, lays eggs on land)
Ant: insect (has 3 body parts, 6 legs)

Marking note: Award 2 marks if 5 or 6 are correct, 1 mark if 3 or 4 are correct, 0 marks if fewer than 3 are correct.

(b) [1 mark] Accept any ONE of the following (or equivalent):

They can grow.
They can reproduce.
They need food/water/air to survive.
They can respond to changes.
They can move by themselves.

Marking note: Award 1 mark for any valid characteristic shared by all living things.

18. [4 marks total]

(a) [2 marks — ½ mark per correct classification]

Item	Living or Non-living?
Monitor lizard	Living
Rain tree	Living
Plastic bottle	Non-living
Mushroom	Living

Explanation:

Monitor lizard: living (reptile — can grow, reproduce, move, respond)
Rain tree: living (plant — can grow, make food, reproduce)
Plastic bottle: non-living (man-made object — cannot grow or reproduce)
Mushroom: living (fungus — can grow, reproduce, needs food and water)

Marking note: Award ½ mark for each correct classification.

(b) [2 marks — 1 mark per correct characteristic]

If the student chooses Monitor lizard:

Characteristic 1: It can move by itself.
Characteristic 2: It can respond to changes / It needs food and water / It can grow / It can reproduce.

If the student chooses Rain tree:

Characteristic 1: It can grow.
Characteristic 2: It can make its own food / It needs water and air / It can reproduce.

If the student chooses Mushroom:

Characteristic 1: It can grow.
Characteristic 2: It can reproduce / It needs food and water / It is a living thing (fungus).

Marking note: Award 1 mark for each valid characteristic of living things, up to 2 marks. The characteristic must be specific and correct.

19. [3 marks total]

(a) [1 mark] Answer: No

Marking note: Award 1 mark for No only.

(b) [2 marks — 1 mark per valid reason]

Accept any TWO of the following reasons:

A car cannot grow on its own (it does not increase in size by producing new cells).
A car cannot reproduce (it cannot make another car by itself).
A car does not respond to changes on its own (it needs a driver).
A car is not a living thing because it does not need air, food, and water in the way living things do.
A car moves only when driven by a person or engine, not by itself.

Marking note: Award 1 mark for each valid reason, up to 2 marks. The reason must correctly explain why a car is non-living.

20. [4 marks total]

(a) [1 mark] Accept any ONE of the following:

It can grow.
It can make its own food (photosynthesis).
It needs water, air, and sunlight to survive.
It can reproduce / It responds to changes.

Marking note: Award 1 mark for any valid characteristic of living things shown by grass.

(b) [1 mark] Answer: Snake

Explanation: A snake is a reptile. It has scaly skin and lays eggs on land.

Marking note: Award 1 mark for Snake only.

Accept any TWO of the following differences:

A grasshopper has 6 legs; a mammal has 4 legs (or 2 legs and 2 arms).
A grasshopper has 3 body parts (head, thorax, abdomen); a mammal has a different body structure.
A grasshopper does not feed its young milk; mammals feed their young milk.
A grasshopper has an exoskeleton (hard outer covering); mammals have an internal skeleton.
A grasshopper lays eggs; most mammals give birth to live young.

Marking note: Award 1 mark for each valid difference, up to 2 marks. The difference must correctly contrast insects and mammals.

Summary of Marks

Section	Marks
Section A: Multiple Choice (Q1–10)	10
Section B: True or False (Q11–15)	10
Section C: Structured Questions (Q16–20)	20
Total	40

This answer key was generated using syllabus-aligned marking schemes. It is designed to complement classroom learning and is not derived from any specific past-year examination paper.