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Primary 4 Science Life Cycles Quiz
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Questions
TuitionGoWhere Primary School (AI)
Primary 4 Science - Life Cycles Quiz 01
Name: _________________________ Date: _____________
Class: _________________________ Score: ______ / 15
Section A: Multiple Choice Questions (1 mark each)
1. Which plant part develops from a fertilised egg cell?
A) Flower
B) Fruit
C) Seed
D) Leaf
2. What is pollination?
A) Transfer of pollen from stamen to pistil
B) Transfer of seeds to soil
C) Growth of seedling
D) Making of food by leaves
3. Which of the following is NOT a method of seed dispersal?
A) Wind
B) Water
C) Pollination
D) Animals
4. In flowering plants, which part contains the ovules?
A) Stamen
B) Pistil
C) Petal
D) Sepal
5. Which condition is NOT necessary for seed germination?
A) Water
B) Warmth
C) Air
D) Light
Section B: Short Answer Questions (2 marks each)
6. Name the male and female parts of a flower.
Answer: _____________________________________________
7. What happens during fertilisation in a flowering plant?
Answer: ___________________________________________________
8. Give two methods of pollination and one example of each.
Answer: ___________________________________________________
9. How does the life cycle of a flowering plant differ from that of a non-flowering plant like a fern?
Answer: ___________________________________________________
10. Name two adaptations of seeds dispersed by wind.
Answer: _____________________________________________
Section C: Application Questions (2 marks each)
11. A farmer notices that his tomato plants are producing fewer fruits than usual even though they have many flowers. What could be the reason?
Answer: ___________________________________________________
12. Explain why some seeds have hooks or sticky surfaces.
Answer: ___________________________________________________
13. Why do plants produce many more seeds than the number of plants that actually grow?
Answer: ___________________________________________________
14. A coconut can float on water. How does this help in its dispersal?
Answer: ___________________________________________________
15. Explain why dandelion seeds are light and have a fluffy structure.
Answer: ___________________________________________________
End of Quiz
Answers
TuitionGoWhere Primary School (AI)
Primary 4 Science - Life Cycles Quiz 01 - Answer Key
Section A: Multiple Choice Questions (1 mark each)
1. C) Seed
The seed develops from the fertilised egg cell (ovule).
2. A) Transfer of pollen from stamen to pistil
Pollination is the transfer of pollen grains from the anther to the stigma.
3. C) Pollination
Pollination is not a method of seed dispersal; it is the transfer of pollen.
4. B) Pistil
The pistil (female part) contains the ovary where ovules are found.
5. D) Light
Seeds need water, warmth, and air to germinate, but not light.
Section B: Short Answer Questions (2 marks each)
6. Male part: Stamen (consisting of anther and filament)
Female part: Pistil (consisting of stigma, style, and ovary)
Award 1 mark for each correct part.
7. During fertilisation, the male cell (in pollen) joins with the female cell (egg cell/ovule) in the ovary to form a seed.
Award 2 marks for explaining the joining of male and female cells.
8. Methods of pollination:
- Wind pollination (e.g., grass, wheat, corn)
- Insect/animal pollination (e.g., hibiscus, rose, sunflower)
Award 1 mark for each correct method with example.
9. Flowering plants reproduce through seeds formed after pollination and fertilisation. Non-flowering plants like ferns reproduce through spores, not seeds, and do not have flowers.
Award 2 marks for correct comparison.
10. Any two of:
- Light weight
- Wings (like maple seeds)
- Fluffy/feathery structures (like dandelion)
- Small size
Award 1 mark for each correct adaptation.
Section C: Application Questions (2 marks each)
11. Possible reasons:
- Lack of pollinators (bees, insects) to transfer pollen
- Poor pollination due to weather conditions
- Flowers may not be receiving enough nutrients
Award 2 marks for identifying pollination problem.
12. Seeds with hooks or sticky surfaces are adapted for dispersal by animals. The hooks or sticky surfaces attach to the fur or feathers of animals, which carry the seeds to new locations.
Award 2 marks for explaining animal dispersal mechanism.
13. Not all seeds will survive to become plants because:
- Some may not land in suitable places
- Some may be eaten by animals
- Some may not have the right conditions for germination
- Some may rot or be destroyed
Award 2 marks for explaining survival challenges.
14. The coconut can float on water because it has a fibrous outer layer that traps air. This allows it to float across rivers and oceans to reach new locations where it can germinate and grow.
Award 2 marks for explaining water dispersal.
15. Dandelion seeds are light and fluffy so they can be easily carried by the wind over long distances. The fluffy parachute-like structure increases air resistance, allowing the seed to stay airborne longer.
Award 2 marks for explaining wind dispersal adaptation.
Marking Scheme Summary
- Section A: 5 marks (5 questions × 1 mark)
- Section B: 10 marks (5 questions × 2 marks)
- Section C: 10 marks (5 questions × 2 marks)
- Total: 25 marks
End of Answer Key