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Primary 3 Science Weighted Assessment 3 (Term 3) Paper 2

Free P3 Science WA3 Paper 2, Exam version, with questions, answers, and syllabus-aligned practice for Singapore students.

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Primary 3 Science From Real Exams Generated by Claude Sonnet 4 Updated 2026-08-17

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Questions

TuitionGoWhere Primary 3 Science

Weighted Assessment 3 (2026) - Version 2

Name: _________________________________ Class: _______ Date: ___________

Duration: 45 minutes
Total Marks: 50

Section A: Multiple Choice Questions (15 marks)

Choose the correct answer and write the letter (A, B, C, or D) in the brackets provided. Each question carries 1 mark.

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

(A) They need food
(B) They can grow
(C) They can rust
(D) They can reproduce

( )

2. Which material comes from animals?

(A) Cotton
(B) Wool
(C) Wood
(D) Rubber

( )

3. A frog begins its life as a/an:

(A) Tadpole
(B) Egg
(C) Baby frog
(D) Pupa

( )

4. Which part of a plant holds it firmly in the soil?

(A) Stem
(B) Leaf
(C) Root
(D) Flower

( )

5. What sense do we use when we feel something hot?

(A) Sight
(B) Touch
(C) Smell
(D) Hearing

( )

6. Which of these animals goes through 3 stages in its life cycle?

(A) Butterfly
(B) Frog
(C) Chicken
(D) Mosquito

( )

7. Plants need sunlight to:

(A) Absorb water
(B) Make food
(C) Grow flowers
(D) Spread seeds

( )

8. Which of the following is a natural material?

(A) Nylon
(B) Plastic
(C) Glass
(D) Rubber

( )

9. The young of a frog is called a:

(A) Chick
(B) Tadpole
(C) Caterpillar
(D) Pupa

( )

10. Which sense organ helps us to see things?

(A) Ears
(B) Nose
(C) Eyes
(D) Tongue

( )

11. What is the function of a flower?

(A) To absorb water
(B) To make food
(C) To transport water
(D) To make seeds

( )

12. Which of these is a living thing?

(A) Cloud
(B) Fire
(C) Grass
(D) Wind

( )

13. A caterpillar is the young of a:

(A) Mosquito
(B) Cockroach
(C) Butterfly
(D) Grasshopper

( )

14. Which body part do we use to smell a flower?

(A) Eyes
(B) Ears
(C) Nose
(D) Tongue

( )

15. Water travels from the roots to the leaves through the:

(A) Flower
(B) Stem
(C) Seed
(D) Fruit

( )

Section B: Short Answer Questions (20 marks)

Answer all questions in the spaces provided.

16. Sort the following items into natural and man-made materials. (4 marks)

Items: Plastic bottle, Wooden table, Cotton shirt, Metal can

Natural Materials	Man-made Materials

17. Match the sense organ to its function. Draw lines to connect them. (5 marks)

Sense Organ	Function
Eyes	Detect taste
Ears	Detect smell
Nose	Detect light
Tongue	Detect sound
Skin	Detect temperature

18. Complete the life cycle of a chicken by filling in the missing stages. (4 marks)

    _____________ → _____________ → Adult Chicken
         ↑                                    |
         |____________________________________|
                      (lays eggs)

19. State whether each statement is TRUE or FALSE. (4 marks)

(a) All living things can move from place to place. ______________

(b) Plants are living things. ______________

(d) Roots help to make food for the plant. ______________

20. Name the parts of a plant that perform these functions. (3 marks)

(a) Makes food for the plant: ______________

(b) Takes in water from the soil: ______________

Section C: Word Problems / Structured Questions (15 marks)

Answer all questions in the spaces provided.

21. Sarah observed a pond near her house. She saw some tadpoles swimming in the water. (5 marks)

(a) What animal will the tadpoles grow into? (1 mark)

(b) Name two differences between a tadpole and an adult frog. (2 marks)

Difference 1: _________________________________________________

Difference 2: _________________________________________________

22. Tom wants to grow a bean plant. He puts a seed in a pot with soil. (5 marks)

(a) Name three things Tom needs to give the seed for it to germinate. (3 marks)

(b) After the plant grows, which part will help it stand upright? (1 mark)

23. Look at the list of items below. (5 marks)

Items: Toy car, Hamster, Robot, Sunflower, Chair

(a) Which items are living things? (2 marks)

(b) Give one reason why a robot is not a living thing even though it can move. (2 marks)

End of Paper

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Answers

TuitionGoWhere Primary 3 Science

Weighted Assessment 3 (2026) - Version 2 Answer Key

Duration: 45 minutes
Total Marks: 50

Section A: Multiple Choice Questions (15 marks)

Question	Answer	Explanation
1	(C)	Rusting is not a characteristic of living things. Living things need food, grow, and reproduce.
2	(B)	Wool comes from sheep (animals). Cotton comes from plants, wood from trees, rubber from rubber trees.
3	(B)	A frog begins its life as an egg, then hatches into a tadpole.
4	(C)	Roots anchor the plant firmly in the soil.
5	(B)	Touch (through our skin) helps us feel temperature (hot/cold).
6	(C)	Chicken has 3 stages: Egg → Chick → Adult chicken. Butterfly has 4, Frog has 3-4, Mosquito has 4.
7	(B)	Plants need sunlight to make food through photosynthesis.
8	(D)	Rubber is a natural material from rubber trees. Nylon, plastic, and glass are man-made.
9	(B)	Tadpole is the young of a frog.
10	(C)	Eyes are the sense organs for sight.
11	(D)	Flowers make seeds for reproduction.
12	(C)	Grass is a living thing (plant). Cloud, fire, and wind are not living.
13	(C)	A caterpillar is the young (larva) of a butterfly.
14	(C)	We use our nose to smell.
15	(B)	The stem transports water from roots to leaves.

Section B: Short Answer Questions (20 marks)

16. Sorting natural and man-made materials (4 marks)

Natural Materials	Man-made Materials
Wooden table	Plastic bottle
Cotton shirt	Metal can

Award 1 mark for each correctly placed item.

17. Matching sense organs to functions (5 marks)

Sense Organ	Function
Eyes	Detect light
Ears	Detect sound
Nose	Detect smell
Tongue	Detect taste
Skin	Detect temperature

Award 1 mark for each correct match.

18. Chicken life cycle (4 marks)

    **Egg** → **Chick** → Adult Chicken
         ↑                           |
         |___________________________|
                 (lays eggs)

Award 2 marks for "Egg" and 2 marks for "Chick".

19. True or False statements (4 marks)

(a) All living things can move from place to place. FALSE (Plants are living things but cannot move from place to place)

(b) Plants are living things. TRUE

(d) Roots help to make food for the plant. FALSE (Leaves make food for the plant)

Award 1 mark for each correct answer.

20. Plant parts and functions (3 marks)

(a) Makes food for the plant: Leaf / Leaves

(b) Takes in water from the soil: Root / Roots

Award 1 mark for each correct answer.

Section C: Word Problems / Structured Questions (15 marks)

21. Tadpole questions (5 marks)

(a) What animal will the tadpoles grow into? (1 mark)

Frog

(b) Two differences between a tadpole and an adult frog (2 marks)

Accept any two of:

Tadpole has a tail; adult frog has no tail
Tadpole has gills; adult frog has lungs
Tadpole lives only in water; adult frog can live on land and water
Tadpole has no legs; adult frog has four legs

Award 1 mark for each correct difference.

Tadpoles live in water because they breathe through gills (1 mark) and gills can only work in water. (1 mark)

Tadpoles need to live in water because they cannot breathe air with lungs yet.

22. Bean plant questions (5 marks)

(a) Three things for seed germination (3 marks)

Water
Air
Warmth / Suitable temperature

Award 1 mark for each correct answer.

(b) Which part helps plant stand upright? (1 mark)

Stem

Leaves make food for the plant. OR Leaves carry out photosynthesis.

23. Living and non-living things (5 marks)

(a) Which items are living things? (2 marks)

Hamster and Sunflower

Award 1 mark for each correct answer.

(b) Why is a robot not a living thing even though it can move? (2 marks)

A robot is not a living thing because:

It cannot grow (1 mark)
It cannot reproduce / It does not need food / It is not made of cells (1 mark)

Accept any two valid reasons.

Accept any one of: Air, Water, Food

Marking Summary

Section	Marks
Section A: MCQ	15
Section B: Short Answer	20
Section C: Structured Questions	15
Total	50

End of Answer Key