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Primary 4 Science Diversity Quiz
Free P4 Science Diversity quiz, AI version, with questions, answers, and syllabus-aligned practice for Singapore students.
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TuitionGoWhere Primary School (AI)
Primary 4 Science - Diversity Quiz 01 - Answer Key
Section A: Multiple Choice Questions (1 mark each)
1. B) Herbivores
Herbivores are animals that eat only plants.
2. C) Human
Humans eat both plants and animals, making them omnivores.
3. B) Cannot make their own food
Fungi are decomposers and obtain nutrients by breaking down dead matter.
4. C) They give birth to live young and feed them milk
All mammals have mammary glands that produce milk for their young.
5. C) Some harmful and some helpful
Some bacteria cause diseases while others help with digestion and decomposition.
Section B: Short Answer Questions (2 marks each)
6. Any two of:
- Lightweight/hollow bones
- Wings/feathers
- Streamlined body shape
- Strong chest muscles
Award 1 mark for each correct characteristic.
7. Vertebrates have a backbone/spine, while invertebrates do not have a backbone.
Award 2 marks for correct explanation of both.
8. Examples: bacteria, fungi (mushrooms, mould)
Importance: They break down dead plants and animals and return nutrients to the soil, which helps plants grow.
Award 1 mark for examples, 1 mark for importance.
9. Fish, Amphibians, Reptiles, Birds, Mammals
Award 2 marks for all five correct, 1 mark for 3-4 correct.
10. Reptiles:
- Have dry, scaly skin
- Lay eggs on land
- Breathe through lungs throughout life
Amphibians:
- Have moist skin
- Lay eggs in water
- Young breathe through gills, adults use lungs
Award 2 marks for at least 2 correct differences.
Section C: Application Questions (2 marks each)
11. A whale is a mammal because:
- It breathes air through lungs (not gills)
- It gives birth to live young
- It feeds its young with milk
- It is warm-blooded
Award 2 marks for any 2 correct reasons.
12. Mushrooms are fungi because:
- They cannot make their own food (no photosynthesis)
- They do not have chlorophyll
- They obtain nutrients by decomposing dead matter
- They do not have true roots, stems, or leaves
Award 2 marks for explaining that fungi cannot photosynthesize/make their own food.
13. A bat is classified as a mammal because:
- It has fur/hair on its body
- It gives birth to live young
- It feeds its young with milk
- It is warm-blooded
Award 2 marks for any 2 correct reasons.
14. Decomposers are important because:
- They break down dead plants and animals
- They return nutrients to the soil
- These nutrients are then used by plants to grow
- They help recycle matter in the ecosystem
Award 2 marks for explaining nutrient cycling/recycling.
15. Classification:
- Spider: Invertebrate (Arachnid)
- Salmon: Vertebrate (Fish)
- Eagle: Vertebrate (Bird)
- Frog: Vertebrate (Amphibian)
- Snake: Vertebrate (Reptile)
- Butterfly: Invertebrate (Insect)
Award 2 marks for all correct, 1 mark for 4-5 correct.
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