Primary 3 Science Life Cycles Quiz

P3 Science Quiz: Life Cycles of Plants & Animals

Questions: 20 Time: 30 minutes Total Marks: 40

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Section A: Multiple Choice (12 marks)

Choose the best answer and write 1, 2, 3 or 4 in the brackets. Each question carries 2 marks.

1. The correct order for a plant's life cycle is: (2 marks)

1. Seed → Flower → Seedling → Fruit → Plant
2. Seed → Seedling → Plant → Flower → Fruit → Seed
3. Seedling → Seed → Plant → Flower → Fruit
4. Flower → Seed → Plant → Seedling → Fruit

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2. Which animal has a 4-stage life cycle? (2 marks)

1. Grasshopper
2. Butterfly
3. Chicken
4. Frog (tadpole stage only)

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3. What does a caterpillar become during the pupa stage? (2 marks)

1. An egg
2. A larger caterpillar
3. A butterfly or moth
4. A different type of insect

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4. Baby frogs are called: (2 marks)

1. Froglets
2. Tadpoles
3. Chicks
4. Pupae

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5. Which animal goes through metamorphosis? (2 marks)

1. Chicken
2. Cat
3. Frog
4. Dog

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6. Seeds need these things to germinate (start growing): (2 marks)

1. Only water
2. Only air
3. Water, air, and warmth
4. Only sunlight

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Section B: Short Answer (14 marks)

Answer the questions clearly. Each question carries 2 marks unless stated.

7. Name the FOUR stages in a butterfly's life cycle. (4 marks)

a) _________________________

b) _________________________

c) _________________________

d) _________________________

8. What is the difference between a 3-stage and 4-stage life cycle? (2 marks)

Answer: _________________________

9. Complete this plant life cycle sequence: (2 marks)

Seed → __________ → Plant → __________ → Fruit → Seed

10. Why do flowers exist in a plant's life cycle? (2 marks)

Answer: _________________________

11. A chicken's life cycle has these stages. Put them in the correct order: (2 marks) [Adult chicken, Chick, Young chicken, Egg]

1. __________ → 2. __________ → 3. __________ → 4. __________

12. Name TWO things that happen when a tadpole changes into a frog. (2 marks)

a) _________________________

b) _________________________

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Section C: Investigation & Application (14 marks)

Use your knowledge to solve these problems.

13. Life Cycle Comparison: (6 marks)

Complete this table comparing different animals:

Animal	Number of Stages	Stage Names
Butterfly	4	Egg → Larva → _______ → _______
Grasshopper	_______	Egg → _______ → Adult
Chicken	_______	_______ → Chick → Adult

14. Ahmad planted some bean seeds. Observe what happens: (4 marks)

Day 1: Ahmad planted the seeds in soil and watered them. Day 5: Small green shoots appeared above the soil. Day 12: The plants have their first real leaves. Day 20: Small white flowers appeared. Day 35: Green pods (fruits) formed where the flowers were.

Questions: a) What stage is the plant on Day 5? _________________________

b) What stage is the plant on Day 20? _________________________

c) What will be inside the green pods? _________________________

d) What conditions did the seeds need to start growing? _________________________

15. Design an Investigation: (4 marks)

Mei Ling wants to find out if seeds can grow without water.

Help her design the investigation:

a) What will she compare? _________________________

b) What will she keep the same? _________________________

c) What will she observe? _________________________

d) What result do you predict? _________________________

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Answer Key Summary:

1. Seed → Seedling → Plant → Flower → Fruit → Seed
2. Butterfly (4 stages: egg, larva, pupa, adult)
3. A butterfly or moth (metamorphosis in pupa)
4. Tadpoles (baby frogs)
5. Frog (undergoes metamorphosis from tadpole)
6. Water, air, and warmth (all needed for germination)
7. Egg → Larva (caterpillar) → Pupa → Adult (butterfly)
8. 3-stage skips pupa; 4-stage includes pupa transformation
9. Seedling, Flower
10. For reproduction (making seeds)
11. Egg → Chick → Young chicken → Adult chicken
12. Grows legs, loses tail, develops lungs, etc.
13. Pupa/Adult, 3/Nymph, 3/Egg 14a. Seedling, 14b. Flowering plant, 14c. Seeds, 14d. Water, air, warmth
14. Seeds with/without water; same type, amount, temperature; growth; seeds without water won't grow

P3 Science Quiz: Life Cycles of Plants & Animals - ANSWERS

Questions: 20
Time: 30 minutes
Total Marks: 40

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Section A: Multiple Choice (12 marks)

Each question carries 2 marks.

1. The correct order for a plant's life cycle is: (2 marks)

Answer: 2 (Seed → Seedling → Plant → Flower → Fruit → Seed)

Explanation: This is the complete plant life cycle. Seeds germinate into seedlings, grow into plants, produce flowers for reproduction, which develop into fruits containing new seeds.

2. Which animal has a 4-stage life cycle? (2 marks)

Answer: 2 (Butterfly)

Explanation: Butterflies have complete metamorphosis with 4 stages: egg → larva (caterpillar) → pupa (chrysalis) → adult butterfly. Grasshoppers have 3 stages (incomplete metamorphosis).

3. What does a caterpillar become during the pupa stage? (2 marks)

Answer: 3 (A butterfly or moth)

Explanation: During the pupa stage, the caterpillar undergoes complete transformation (metamorphosis) to become an adult butterfly or moth.

4. Baby frogs are called: (2 marks)

Answer: 2 (Tadpoles)

Explanation: Young frogs that live in water and breathe through gills are called tadpoles. They later develop legs and lungs to become adult frogs.

5. Which animal goes through metamorphosis? (2 marks)

Answer: 3 (Frog)

Explanation: Frogs undergo metamorphosis, changing from aquatic tadpoles to land-dwelling adults. This involves major body changes like growing legs and developing lungs.

6. Seeds need these things to germinate (start growing): (2 marks)

Answer: 3 (Water, air, and warmth)

Explanation: Seeds need water (to activate growth), air (oxygen for respiration), and warmth (suitable temperature) to begin germinating.

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Section B: Short Answer (14 marks)

Each question carries 2 marks unless stated.

7. Name the FOUR stages in a butterfly's life cycle. (4 marks)

a) Egg (1 mark)

b) Larva (caterpillar) (1 mark)

c) Pupa (chrysalis) (1 mark)

d) Adult (butterfly) (1 mark)

8. What is the difference between a 3-stage and 4-stage life cycle? (2 marks)

Answer: 3-stage life cycle skips the pupa stage; 4-stage life cycle includes a pupa stage where complete transformation occurs.

Explanation: 3-stage = incomplete metamorphosis (grasshopper). 4-stage = complete metamorphosis (butterfly).

9. Complete this plant life cycle sequence: (2 marks)

Seed → SEEDLING → Plant → FLOWER → Fruit → Seed

• First blank: Seedling (1 mark)
• Second blank: Flower (1 mark)

10. Why do flowers exist in a plant's life cycle? (2 marks)

Answer: For reproduction (to make seeds) / To attract pollinators and produce fruits with seeds.

Explanation: Flowers contain reproductive parts that produce seeds after pollination.

11. A chicken's life cycle has these stages. Put them in the correct order: (2 marks)

1. Egg → 2. Chick → 3. Young chicken → 4. Adult chicken

Explanation: Chickens have a simple 3-stage life cycle without metamorphosis.

12. Name TWO things that happen when a tadpole changes into a frog. (2 marks)

a) Grows legs / Develops limbs (1 mark)

b) Loses tail / Develops lungs / Gills disappear (1 mark)

Other acceptable answers: Changes from gills to lungs, develops eyelids, skin changes texture.

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Section C: Investigation & Application (14 marks)

13. Life Cycle Comparison: (6 marks)

Animal	Number of Stages	Stage Names
Butterfly	4	Egg → Larva → Pupa → Adult (2 marks)
Grasshopper	3 (1 mark)	Egg → Nymph (1 mark) → Adult
Chicken	3 (1 mark)	Egg (1 mark) → Chick → Adult

14. Ahmad planted some bean seeds. Observe what happens: (4 marks)

a) What stage is the plant on Day 5? Seedling (1 mark)

Explanation: Small green shoots = early seedling stage.

b) What stage is the plant on Day 20? Adult plant / Flowering plant (1 mark)

Explanation: Plant has flowers, so it's a mature adult plant.

c) What will be inside the green pods? Seeds (1 mark)

Explanation: Pods are fruits that contain seeds for the next generation.

d) What conditions did the seeds need to start growing? Water, air, and warmth / soil, water, appropriate temperature (1 mark)

15. Design an Investigation: (4 marks)

a) What will she compare? Seeds with water vs seeds without water (1 mark)

b) What will she keep the same? Same type of seeds, same amount of light, same temperature, same type of soil (1 mark)

c) What will she observe? Whether the seeds germinate / if shoots appear / growth rate (1 mark)

d) What result do you predict? Seeds without water will not grow / only seeds with water will germinate (1 mark)

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TOTAL: 40 MARKS

Scoring Guide:

• A: 32-40 marks (Excellent understanding of life cycles)
• B: 24-31 marks (Good understanding with minor gaps)
• C: 16-23 marks (Satisfactory, needs review of some concepts)
• D: Below 16 marks (Requires additional support and practice)

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~ End of Answer Key ~