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Primary 4 Science Practice Paper 4
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Questions
TuitionGoWhere Practice Paper - Science Primary 4
TuitionGoWhere Practice Paper (AI)
Subject: Science Level: Primary 4 Paper: Practice Paper — Diversity (Topic Focus) Duration: 40 minutes Total Marks: 40
Name: ___________________________ Class: ___________________________ Date: ___________________________
Instructions
- Answer all questions.
- Write your answers in the spaces provided.
- For multiple-choice questions, shade the correct option or write the letter in the answer space.
- Show your working where required.
- The number of marks for each question is shown in brackets [ ].
Section A: Multiple Choice (10 marks)
Questions 1–10. Each question carries 1 mark. Choose the best answer.
1. Which of the following is a characteristic of living things?
A) They are all green in colour B) They can grow and reproduce C) They are all animals D) They do not need water
Answer: ___________
2. Which of these is a non-living thing?
A) A butterfly B) A potted plant C) A wooden ruler D) A goldfish
Answer: ___________
3. What is the main reason scientists classify living things?
A) To give them all the same name B) To group them by their similarities and differences C) To make them easier to draw D) To count how many there are in the world
Answer: ___________
4. Which of the following groups contains only animals?
A) Rose, fern, moss B) Dog, eagle, earthworm C) Mushroom, algae, grass D) Goldfish, sunflower, frog
Answer: ___________
5. A mammal is an animal that __________.
A) has feathers and lays eggs B) has scales and lives in water C) has fur or hair and feeds its young milk D) has a hard shell and moves very slowly
Answer: ___________
6. Which of these is an insect?
A) Spider B) Crab C) Ant D) Centipede
Answer: ___________
7. The diagram below shows a classification key. Which animal is correctly matched?
Has wings? ─── Yes ──→ Can fly? ─── Yes ──→ [Animal A]
└─── No ──→ [Animal B]
└─── No ──→ Has fins? ─── Yes ──→ [Animal C]
└─── No ──→ [Animal D]
A) Animal A — Penguin B) Animal B — Bat C) Animal C — Shark D) Animal D — Eagle
Answer: ___________
8. Which of the following is a characteristic of all living things?
A) They can fly B) They can photosynthesise C) They can respond to changes in their surroundings D) They can swim
Answer: ___________
9. Ferns and mosses are grouped together because they both __________.
A) produce flowers B) produce seeds C) reproduce by spores D) have fruits
Answer: ___________
10. What does biodiversity mean?
A) The study of one type of animal B) The variety of living things in an environment C) The number of plants in a garden D) The size of the largest animal in a forest
Answer: ___________
Section B: Short Answer (20 marks)
Questions 11–18. Answer in the spaces provided.
11. State two characteristics that all living things share. [2]
(i) _______________________________________________________________
(ii) _______________________________________________________________
12. The table below lists four organisms. Complete the table by classifying each one. [4]
| Organism | Plant or Animal? | Has legs? (Yes/No) | Has wings? (Yes/No) |
|---|---|---|---|
| Sparrow | |||
| Fern | |||
| Cat | |||
| Butterfly |
13. Study the pictures below (described). Identify whether each organism is a mammal, bird, fish, reptile, amphibian, or insect. [3]
(a) An animal with feathers, wings, and a beak that lays eggs on land.
Answer: ___________
(b) An animal with moist skin, no scales, that lives both in water and on land.
Answer: ___________
(c) An animal with six legs and three body parts (head, thorax, abdomen).
Answer: ___________
14. Explain why a whale is classified as a mammal and not a fish. Give two reasons. [2]
(i) _______________________________________________________________
(ii) _______________________________________________________________
15. A student found an unknown organism in the school garden. It has a soft body, no legs, and leaves a slimy trail.
(a) Name the group of animals this organism most likely belongs to. [1]
Answer: ___________
(b) Give one reason for your answer. [1]
16. Use the following classification key to identify Organism X. [2]
Organism X: It is small, has a shell, no legs, and lives in water.
Step 1: Has legs? ── Yes → Go to Step 2
└── No → Go to Step 3
Step 2: Has 6 legs? → Insect
Has 8 legs? → Arachnid
Step 3: Has a shell? → Yes → Mollusc
└── No → Worm
Organism X is a ___________
17. Give two differences between flowering plants and non-flowering plants (such as ferns and mosses). [2]
| Flowering Plants | Non-Flowering Plants | |
|---|---|---|
| Difference 1 | ||
| Difference 2 |
18. Why is it important to protect biodiversity in Singapore? Give one reason. [1]
Section C: Structured / Application (10 marks)
Questions 19–20. Answer in the spaces provided.
19. The bar chart below (described) shows the number of different types of animals found in two locations — a park and a pond.
Park: Birds (8), Insects (15), Mammals (3), Reptiles (2) Pond: Fish (12), Insects (10), Amphibians (4), Birds (5)
(a) Which location has the greater diversity of animals? Explain your answer. [2]
(b) Which type of animal is found in both locations? [1]
Answer: ___________
(c) Suggest one reason why the pond has more fish than the park. [1]
20. A group of students carried out a survey of living things in two different habitats: a grassy field and a concrete playground.
Their results are shown below:
| Living things found | Grassy field | Concrete playground |
|---|---|---|
| Grass | ✓ | ✗ |
| Ants | ✓ | ✓ |
| Butterflies | ✓ | ✗ |
| Sparrows | ✓ | ✓ |
| Moss | ✓ | ✗ |
| Lizard | ✓ | ✗ |
(a) Which habitat has more types of living things? [1]
Answer: ___________
(b) Give one reason for your answer in (a). [1]
(c) Explain why more types of living things are found in the grassy field than on the concrete playground. [2]
(d) If the concrete playground were turned into a garden, predict what would happen to the number of types of living things found there. [1]
End of Paper
Answers
TuitionGoWhere Practice Paper — Science Primary 4
Answer Key — Version 4
Section A: Multiple Choice (10 marks)
1. B — They can grow and reproduce
Marking note: All living things grow and can reproduce. Colour, movement, and water needs vary. [1]
2. C — A wooden ruler
Marking note: A wooden ruler is made from wood (once living, now non-living material). The butterfly, potted plant, and goldfish are all living things. [1]
3. B — To group them by their similarities and differences
Marking note: Classification helps scientists organise and study living things systematically. [1]
4. B — Dog, eagle, earthworm
Marking note: Option A contains only plants; C contains a mushroom (fungus), algae, and grass (plants); D contains a plant (sunflower). [1]
5. C — has fur or hair and feeds its young milk
Marking note: Feathers and egg-laying describe birds; scales and water describe fish; hard shell describes some reptiles/turtles. [1]
6. C — Ant
Marking note: Insects have 6 legs. Spiders (8 legs) are arachnids; crabs (10 legs) are crustaceans; centipedes are myriapods. [1]
7. C — Animal C — Shark
Marking note: A shark has no wings (→ No at Step 1) and has fins (→ Yes at Step 3) → Animal C. Penguin cannot fly (→ Animal B). Bat can fly (→ Animal A). Eagle can fly (→ Animal A). [1]
8. C — They can respond to changes in their surroundings
Marking note: Responding to stimuli is a characteristic of all living things. Not all living things can fly, photosynthesise, or swim. [1]
9. C — reproduce by spores
Marking note: Ferns and mosses are non-flowering plants that reproduce by spores, not by seeds or flowers. [1]
10. B — The variety of living things in an environment
Marking note: Biodiversity refers to the range/diversity of different species in a given area. [1]
Section B: Short Answer (20 marks)
11. State two characteristics that all living things share. [2]
(i) They can grow. [1] (ii) They can reproduce (produce young/offspring). [1]
Acceptable alternatives: They can respond to stimuli / They need food and water / They can breathe (respire) / They can excrete / They can move (not all, but commonly accepted at P4). Award 1 mark each for any two valid characteristics.
12. Complete the table. [4]
| Organism | Plant or Animal? | Has legs? (Yes/No) | Has wings? (Yes/No) |
|---|---|---|---|
| Sparrow | Animal | Yes | Yes |
| Fern | Plant | No | No |
| Cat | Animal | Yes | No |
| Butterfly | Animal | Yes | Yes |
Marking note: Award 1 mark for each correctly completed row (all three columns correct = 1 mark per row). [4]
13. Identify each group. [3]
(a) Bird [1] — Feathers, wings, beak, and laying eggs on land are key bird characteristics.
(b) Amphibian [1] — Moist skin, no scales, and living in both water and on land describe amphibians (e.g., frogs).
(c) Insect [1] — Six legs and three body parts (head, thorax, abdomen) define insects.
14. Explain why a whale is a mammal, not a fish. Give two reasons. [2]
(i) A whale breathes air using lungs (it surfaces to breathe), whereas fish breathe through gills. [1]
(ii) A whale gives birth to live young and feeds them milk, whereas most fish lay eggs and do not produce milk. [1]
Acceptable alternatives: Whales are warm-blooded; whales have a horizontal tail fluke (fish have vertical); whales have a blowhole. Award 1 mark each for any two valid mammalian characteristics.
15. Unknown organism: soft body, no legs, slimy trail.
(a) Mollusc (or Gastropod — snails and slugs) [1]
(b) It has a soft body and leaves a slimy trail, which are characteristics of snails/slugs (molluscs). [1]
Acceptable: "Snail" or "slug" accepted for (a) if student identifies the specific animal. Award mark for correct reasoning in (b).
16. Classification key — Organism X: small, has a shell, no legs, lives in water. [2]
Step 1: Has legs? → No → Go to Step 3 [1] Step 3: Has a shell? → Yes → Mollusc [1]
Organism X is a Mollusc (e.g., a water snail).
17. Two differences between flowering and non-flowering plants. [2]
| Flowering Plants | Non-Flowering Plants | |
|---|---|---|
| Difference 1 | Produce flowers | Do not produce flowers |
| Difference 2 | Reproduce by seeds (inside fruits) | Reproduce by spores |
Acceptable alternatives for Difference 2: Flowering plants have fruits; non-flowering plants do not. Award 1 mark per correct row.
18. Why is it important to protect biodiversity in Singapore? [1]
Any one valid reason, e.g.:
- To maintain a balanced ecosystem so that all living things can survive.
- To ensure we have clean air, water, and food (ecosystem services).
- To prevent species from becoming extinct.
- To allow future generations to enjoy and learn from nature.
Award 1 mark for any reasonable answer.
Section C: Structured / Application (10 marks)
19. Bar chart data analysis — Park vs. Pond.
(a) The pond has greater diversity. [1] The pond has 4 different types of animals (fish, insects, amphibians, birds), while the park also has 4 types (birds, insects, mammals, reptiles). However, if comparing total number of types, both have 4 — accept either answer with valid reasoning.
Clarification: Both have 4 types. Award the mark if the student states either location and gives a valid explanation (e.g., "The pond has more types because it has fish and amphibians which are not found in the park"). If the student says the pond because it has more total animals (12+10+4+5=31 vs. 8+15+3+2=28), accept with reasoning. [1 for answer + 1 for explanation]
(b) Birds and Insects are found in both locations. [1]
Accept either "Birds" or "Insects" — both are correct. Award 1 mark.
(c) Fish live in water, and the pond provides a water habitat for fish to survive, whereas the park does not have a body of water. [1]
Accept any reasonable answer linking water to fish habitat.
20. Habitat survey — Grassy field vs. Concrete playground.
(a) Grassy field [1] — It has 6 types of living things compared to only 2 on the concrete playground.
(b) The grassy field has more types of living things (6 types) while the concrete playground has only 2 types (ants and sparrows). [1]
(c) The grassy field has more food, water, and shelter available for living things. [1] Plants like grass and moss provide food and shelter for insects, which in turn attract birds and lizards. The concrete playground lacks soil, plants, and water, so fewer organisms can survive there. [1]
Award 1 mark for identifying resources (food/water/shelter) and 1 mark for explaining the food chain / interdependence.
(d) The number of types of living things would increase. [1] A garden would provide food, water, and shelter, attracting more insects, birds, and plants.
Accept: "It would increase" / "More living things would come" / similar valid prediction.
Total: 40 marks