From Real Exams Exam Paper

Primary 3 Science Weighted Assessment 3 (Term 3) Paper 5

Free P3 Science WA3 Paper 5, Exam version, with questions, answers, and syllabus-aligned practice for Singapore students.

These static practice materials are generated from the site's syllabus and paper-generation workflow, with source and model context shown so students and parents can evaluate the material before use.

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

Back to Subject Browse Free Exam Papers

Questions

TuitionGoWhere Primary 3 Science

Weighted Assessment 3 (2026) - Version 5

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. All living things need ____________ to stay alive.

(A) Toys and games
(B) Television and books
(C) Air, water, and food
(D) Clothes and shoes

( )

2. Which is a characteristic of non-living things?

(A) They can grow
(B) They need food
(C) They cannot reproduce
(D) They can breathe

( )

3. What is the correct order of a chicken's life cycle?

(A) Chick → Egg → Adult chicken
(B) Egg → Adult chicken → Chick
(C) Egg → Chick → Adult chicken
(D) Adult chicken → Egg → Chick

( )

4. Which part of a plant transports water from roots to leaves?

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

( )

5. We use our ____________ to taste different flavours.

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

( )

6. What is another name for the caterpillar stage in a butterfly's life cycle?

(A) Egg
(B) Larva
(C) Pupa
(D) Adult

( )

7. Roots help the plant by:

(A) Making food
(B) Absorbing sunlight
(C) Absorbing water and minerals
(D) Attracting bees

( )

8. Which material is natural?

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

( )

9. Which of these animals has a life cycle with only 3 stages?

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

( )

10. Which sense do we use to know if it is raining outside without looking?

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

( )

11. What is the main function of a flower?

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

( )

12. Which of these is NOT a living thing?

(A) Bacteria
(B) Virus
(C) River
(D) Algae

( )

13. During which stage does a butterfly stay still and not eat?

(A) Egg stage
(B) Caterpillar stage
(C) Pupa stage
(D) Adult stage

( )

14. Our skin can detect:

(A) Light and darkness
(B) Sound and music
(C) Pressure and temperature
(D) Taste and flavour

( )

15. Seeds need water, air, and ____________ to germinate.

(A) Sunlight
(B) Warmth
(C) Fertilizer
(D) Flowers

( )

Section B: Short Answer Questions (20 marks)

Answer all questions in the spaces provided.

16. Write THREE differences between living and non-living things. (3 marks)

Living Things	Non-living Things

17. Circle the correct answer for each question. (5 marks)

(a) Plants get water through their ( roots / leaves / flowers ).

(b) The sense of ( smell / touch / hearing ) helps us detect hot and cold.

(d) ( Cotton / Nylon / Plastic ) is a natural material from plants.

(e) The ( flower / stem / root ) supports the plant and holds it upright.

18. Label the stages of the butterfly life cycle. (4 marks)

Stage 1: _____________ (tiny, round, laid on leaf)
          ↓
Stage 2: _____________ (eats leaves, has many legs)
          ↓
Stage 3: _____________ (does not move, wrapped in case)
          ↓
Stage 4: _____________ (has wings, can fly)

19. Write the sense organ used for each of the following senses. (5 marks)

(a) Sight: _______________

(b) Hearing: _______________

(d) Taste: _______________

(e) Touch: _______________

20. List three things that all living things can do. (3 marks)

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

Answer all questions in the spaces provided.

21. Kevin found some frog eggs in a pond. He decided to observe them. (5 marks)

(a) What will hatch from the frog eggs? (1 mark)

(b) Describe two changes that will happen as this young animal grows into an adult frog. (2 marks)

Change 1: _________________________________________________

Change 2: _________________________________________________

22. Look at the materials below and answer the questions. (5 marks)

Materials: Wool sweater, Rubber boot, Plastic container, Silk scarf, Wooden box

(a) Which materials come from animals? (2 marks)

(b) Which material comes from trees? (1 mark)

Natural: _____________________________________________________

Man-made: __________________________________________________

23. A sunflower plant has roots, a stem, leaves, and a flower. (5 marks)

(a) Which part helps the plant make food? What does this part need to make food? (2 marks)

Part: _____________________________________________________________

Needs: _____________________________________________________________

(b) If the stem of the sunflower is cut, what will happen to the leaves? Why? (2 marks)

End of Paper

Free quiz and exam paper access

Enter your details to view this paper

Your access is remembered on this device.

Answers

TuitionGoWhere Primary 3 Science

Weighted Assessment 3 (2026) - Version 5 Answer Key

Duration: 45 minutes
Total Marks: 50

Section A: Multiple Choice Questions (15 marks)

Question	Answer	Explanation
1	(C)	All living things need air, water, and food to survive.
2	(C)	Non-living things cannot reproduce. Only living things can grow, need food, and breathe.
3	(C)	Chicken life cycle: Egg → Chick → Adult chicken.
4	(B)	The stem transports water from roots to leaves and other parts.
5	(C)	The tongue is the sense organ for taste.
6	(B)	Larva is another name for caterpillar stage.
7	(C)	Roots absorb water and minerals from the soil.
8	(C)	Silk is natural (from silkworms). Plastic, nylon, and glass are man-made.
9	(C)	Chicken has 3 stages. Butterfly, mosquito, and housefly have 4 stages.
10	(B)	We can hear the sound of rain with our ears.
11	(C)	Flowers make seeds for plant reproduction.
12	(C)	River is not a living thing. Bacteria, viruses, and algae are living.
13	(C)	During pupa stage, the butterfly stays still inside a chrysalis and does not eat.
14	(C)	Skin detects pressure (touch) and temperature (hot/cold).
15	(B)	Seeds need water, air, and warmth to germinate.

Section B: Short Answer Questions (20 marks)

16. Differences between living and non-living things (3 marks)

Living Things	Non-living Things
Can grow	Cannot grow
Need food	Do not need food
Can reproduce	Cannot reproduce

Other acceptable answers:

Living things can move / Non-living things cannot move on their own
Living things breathe / Non-living things do not breathe
Living things respond to surroundings / Non-living things do not respond

Award 1 mark for each correct pair.

17. Circle the correct answer (5 marks)

(a) Plants get water through their ( roots / leaves / flowers ).

(b) The sense of ( smell / touch / hearing ) helps us detect hot and cold.

(d) ( Cotton / Nylon / Plastic ) is a natural material from plants.

(e) The ( flower / stem / root ) supports the plant and holds it upright.

Award 1 mark for each correct answer.

18. Butterfly life cycle stages (4 marks)

Stage 1: **Egg** (tiny, round, laid on leaf)
          ↓
Stage 2: **Caterpillar / Larva** (eats leaves, has many legs)
          ↓
Stage 3: **Pupa / Chrysalis** (does not move, wrapped in case)
          ↓
Stage 4: **Adult butterfly / Butterfly** (has wings, can fly)

Award 1 mark for each correct label.

19. Sense organs for each sense (5 marks)

(a) Sight: Eyes

(b) Hearing: Ears

(d) Taste: Tongue

(e) Touch: Skin

Award 1 mark for each correct answer.

20. Three things all living things can do (3 marks)

Accept any three of:

Grow
Reproduce / Have young
Move
Breathe / Need air
Eat / Need food
Respond to changes in their surroundings
Get rid of waste

Award 1 mark for each correct answer.

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

21. Frog eggs observation (5 marks)

(a) What will hatch from the frog eggs? (1 mark)

Tadpole / Tadpoles

(b) Two changes as it grows into adult frog (2 marks)

Accept any two of:

It will grow legs (1 mark)
It will lose its tail (1 mark)
It will develop lungs to breathe air (1 mark)
Gills will disappear (1 mark)
It will be able to live on land (1 mark)

Frog eggs need to be in water because:

The eggs need water to stay moist / not dry out (1 mark)
The tadpoles that hatch need water to breathe using gills (1 mark)

Tadpoles live in water and breathe through gills, so eggs must be laid in water.

22. Materials sorting (5 marks)

(a) Which materials come from animals? (2 marks)

Wool sweater (from sheep) and Silk scarf (from silkworms)

Award 1 mark for each correct answer.

(b) Which material comes from trees? (1 mark)

Wooden box (and Rubber boot - rubber comes from rubber trees)

Accept either answer for full marks.

Natural: Wool sweater, Rubber boot, Silk scarf, Wooden box

Man-made: Plastic container

Award 1 mark for natural list (at least 3 correct), 1 mark for man-made.

23. Sunflower plant parts (5 marks)

(a) Which part makes food? What does it need? (2 marks)

Part: Leaf / Leaves (1 mark)

Needs: Sunlight (and water and air/carbon dioxide) (1 mark)

(b) If stem is cut, what happens to leaves? Why? (2 marks)

The leaves will wilt and die (1 mark) because water cannot be transported from the roots to the leaves anymore. (1 mark)

The leaves will not get water because the stem is the part that carries water from roots to leaves.

The flower develops into a fruit / The flower makes seeds / Seeds form inside the flower

Marking Summary

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

End of Answer Key