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Primary 5 Science Diversity Quiz

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Questions

Primary 5 Science Quiz - Diversity

Name: ________________________
Class: Primary 5 ______
Date: ________________________
Score: ______ / 40

Duration: 45 minutes
Total Marks: 40

Instructions:

Answer all questions.
Write your answers in the spaces provided.
For multiple-choice questions, write the letter (A, B, C, or D) in the bracket provided.
For open-ended questions, write your answers clearly in complete sentences.
Diagrams are not drawn to scale unless stated.

Section A: Multiple-Choice Questions (10 × 1 mark = 10 marks)

1. Which of the following groups of organisms are all classified as fungi?
A. Mould, yeast, mushroom
B. Moss, fern, mushroom
C. Bacteria, virus, mould
D. Algae, yeast, bacteria

[ ]

2. The diagram below shows a plant cell.
<image_placeholder> id: Q2-fig1 type: diagram linked_question: Q2 description: A typical plant cell with labelled parts: cell wall, cell membrane, cytoplasm, nucleus, chloroplast, vacuole. Part X points to the chloroplast. labels: Cell wall, Cell membrane, Cytoplasm, Nucleus, Chloroplast (X), Vacuole values: None must_show: Clear labels for all organelles; Part X clearly on chloroplast </image_placeholder>

Which part (labelled X) contains chlorophyll and traps light energy for photosynthesis?
A. Nucleus
B. Vacuole
C. Chloroplast
D. Cell wall

[ ]

3. Which of the following characteristics is unique to birds and not shared by mammals?
A. Have a backbone
B. Lay eggs
C. Have feathers
D. Breathe with lungs

[ ]

4. Study the classification chart below.
<image_placeholder> id: Q4-fig1 type: chart linked_question: Q4 description: A dichotomous classification chart for vertebrates. Start: Has backbone → Yes → Has feathers → Bird; No → Has hair/fur → Mammal; No → Has moist skin → Amphibian; No → Has dry scales → Reptile; No → Has gills and fins → Fish. labels: Vertebrates, Bird, Mammal, Amphibian, Reptile, Fish values: None must_show: Clear branching with yes/no questions and animal group names at endpoints </image_placeholder>

An animal has a backbone, dry scales, and lays eggs with leathery shells. Which group does it belong to?
A. Amphibian
B. Reptile
C. Bird
D. Fish

[ ]

5. Which of the following statements about microorganisms is correct?
A. All bacteria are harmful to humans.
B. Viruses can reproduce on their own outside a living cell.
C. Yeast is a fungus used in bread-making.
D. Moulds are single-celled organisms.

[ ]

6. The table below shows the characteristics of four organisms, P, Q, R, and S. A tick (✓) means the organism has the characteristic.

Characteristic	P	Q	R	S
Has cell wall made of cellulose	✓		✓
Has chloroplasts	✓
Reproduces by spores		✓		✓
Feeds on decaying matter		✓		✓

Which organism is most likely a mould?
A. P
B. Q
C. R
D. S

[ ]

7. In the classification of plants, which group reproduces by spores and does not produce flowers or seeds?
A. Flowering plants
B. Non-flowering plants (e.g., ferns, mosses)
C. Fungi
D. Bacteria

[ ]

8. Which of the following is not a characteristic of all living things?
A. Need air, food, and water
B. Can move from place to place
C. Respond to changes
D. Reproduce

[ ]

9. The diagram below shows a flowchart for classifying materials.
<image_placeholder> id: Q9-fig1 type: chart linked_question: Q9 description: Flowchart: Start → Is it living? → Yes → Can it make its own food? → Yes → Plant; No → Animal. No → Is it made of metal? → Yes → Metal; No → Non-metal. labels: Living, Non-living, Plant, Animal, Metal, Non-metal values: None must_show: Clear yes/no decision boxes and final classification categories </image_placeholder>

A piece of wood comes from a tree. According to the flowchart, how should it be classified?
A. Living → Plant
B. Living → Animal
C. Non-living → Metal
D. Non-living → Non-metal

[ ]

10. Which of the following pairs shows a correct match between the organism and its group?
A. Whale — Fish
B. Bat — Bird
C. Shark — Fish
D. Penguin — Mammal

[ ]

Section B: Short-Answer Questions (5 × 2 marks = 10 marks)

11. State two differences between a plant cell and an animal cell.

12. The diagram below shows a mushroom.
<image_placeholder> id: Q12-fig1 type: diagram linked_question: Q12 description: A mushroom showing cap, gills (under cap), stalk, and mycelium (underground threads). Part A points to gills; Part B points to mycelium. labels: Cap, Gills (A), Stalk, Mycelium (B) values: None must_show: Clear labels for cap, gills, stalk, mycelium; Part A on gills, Part B on mycelium </image_placeholder>

(a) Name the part labelled A and state its function.

(b) The part labelled B grows underground. Explain why it is important for the mushroom.

13. Classify the following organisms into the correct groups in the table below.
Organisms: Bacteria, Fern, Mould, Moss, Yeast, Hibiscus plant

Group	Organisms
Bacteria
Fungi
Non-flowering plants
Flowering plants

14. Explain why viruses are considered non-living by most scientists. Give two reasons.

15. The diagram below shows a dichotomous key for classifying four animals: W, X, Y, and Z.
<image_placeholder> id: Q15-fig1 type: chart linked_question: Q15 description: Dichotomous key: 1a. Has feathers → Bird (W); 1b. No feathers → Go to 2. 2a. Has hair/fur → Mammal (X); 2b. No hair/fur → Go to 3. 3a. Has moist skin, lays eggs in water → Amphibian (Y); 3b. Has dry scales, lays eggs on land → Reptile (Z). labels: W, X, Y, Z values: None must_show: Clear numbered steps with characteristics and animal group outcomes </image_placeholder>

Animal Y lays its eggs in water and has moist skin. Based on the key, which animal group does Y belong to?

Section C: Structured / Open-Ended Questions (5 × 4 marks = 20 marks)

16. The table below shows the characteristics of five vertebrates.

Animal	Body Covering	Breathing Method	Reproduction
Guppy	Scales	Gills	Lays eggs in water
Frog	Moist skin	Lungs, skin, gills (tadpole)	Lays eggs in water
Lizard	Dry scales	Lungs	Lays eggs on land
Sparrow	Feathers	Lungs	Lays eggs on land
Bat	Hair/Fur	Lungs	Gives birth to live young

(a) Which animal is a mammal? Give two reasons based on the table.

(b) State one similarity and one difference between the frog and the lizard in terms of reproduction.
Similarity: ___________________________________________________________________
Difference: ___________________________________________________________________

17. A student observed three organisms, A, B, and C, under a microscope and recorded the following:

Organism A: Single-celled, no nucleus, reproduces by binary fission.
Organism B: Single-celled, has nucleus, chloroplasts present, moves using flagellum.
Organism C: Multi-cellular, thread-like structures (hyphae), reproduces by spores.

(a) Identify the group each organism belongs to: Bacteria, Protists, or Fungi.
Organism A: _______________
Organism B: _______________
Organism C: _______________

(b) Organism B can make its own food. Name the process and state the condition needed.
Process: ___________________________________________________________________
Condition needed: ____________________________________________________________

18. The diagram below shows the life cycle of a flowering plant.
<image_placeholder> id: Q18-fig1 type: diagram linked_question: Q18 description: Life cycle of flowering plant: Seed → Germination → Seedling → Adult plant → Flower → Pollination → Fertilisation → Fruit/Seed → Dispersal → back to Seed. Arrows show cycle. Labels: Pollination, Fertilisation, Seed dispersal, Germination. labels: Seed, Germination, Seedling, Adult plant, Flower, Pollination, Fertilisation, Fruit, Seed dispersal values: None must_show: Clear cyclic diagram with all stages labelled and arrows showing direction </image_placeholder>

(a) Name the process that occurs after pollination and before seed formation.

(b) Explain why seed dispersal is important for the survival of the plant species.

19. Scientists classify living things into groups based on shared characteristics.

(a) State two reasons why classification is important.

(b) A student found an unknown organism in the school garden. It has the following characteristics:

Multi-cellular
Has cell walls made of cellulose
Has chloroplasts
Reproduces by spores
Does not produce flowers or seeds

Which plant group does it belong to? Explain your answer using the characteristics above.

20. The diagram below shows a food web in a garden ecosystem.
<image_placeholder> id: Q20-fig1 type: diagram linked_question: Q20 description: Food web: Grass → Grasshopper → Frog → Snake → Eagle. Grass → Rabbit → Fox. Grass → Mouse → Snake. Grass → Grasshopper → Bird. Decomposers (bacteria, fungi) break down all dead organisms. Arrows point from food to consumer. labels: Grass, Grasshopper, Frog, Snake, Eagle, Rabbit, Fox, Mouse, Bird, Decomposers (Bacteria, Fungi) values: None must_show: Clear arrows showing energy flow; all organisms labelled; decomposers shown breaking down dead matter </image_placeholder>

(a) Name one producer and one primary consumer in this food web.
Producer: _______________________
Primary consumer: _______________________

(b) If all the frogs are removed from this ecosystem, explain how the grasshopper population and the snake population would be affected.
Grasshopper population: _______________________________________________________
Snake population: _____________________________________________________________

End of Quiz

Answers

Primary 5 Science Quiz - Diversity (Answer Key)

Total Marks: 40

Section A: Multiple-Choice Questions (10 × 1 mark = 10 marks)

1. A — Mould, yeast, and mushroom are all fungi. Moss and fern are non-flowering plants. Bacteria and viruses are microorganisms but not fungi. Algae are plant-like protists.

2. C — Chloroplasts contain chlorophyll, the green pigment that traps light energy for photosynthesis. The nucleus controls cell activities, the vacuole stores water and substances, and the cell wall provides support.

3. C — Feathers are unique to birds. Both birds and mammals have backbones (vertebrates), lay eggs (though most mammals give live birth, monotremes lay eggs), and breathe with lungs.

4. B — The animal has a backbone (vertebrate), dry scales, and lays eggs with leathery shells on land. These are characteristics of reptiles. Amphibians have moist skin, birds have feathers, and fish have gills and fins.

5. C — Yeast is a single-celled fungus used in bread-making (fermentation produces CO₂ to make dough rise). Not all bacteria are harmful (some are beneficial). Viruses cannot reproduce outside a host cell. Moulds are multi-cellular fungi (made of hyphae).

6. D — Moulds are fungi: they reproduce by spores and feed on decaying matter (saprotrophs). They do not have cell walls made of cellulose (fungi have chitin) or chloroplasts. Organism P is a plant (cellulose cell wall, chloroplasts). Organism Q is a fungus (spores, decaying matter). Organism R has cellulose cell wall but no chloroplasts — could be a plant part or fungus, but not typical mould. Organism S matches mould exactly.

7. B — Non-flowering plants like ferns and mosses reproduce by spores and do not produce flowers or seeds. Flowering plants produce seeds. Fungi and bacteria are not plants.

8. B — Not all living things can move from place to place (e.g., plants are living but fixed in place). All living things need air, food, and water; respond to changes; and reproduce.

9. D — Wood comes from a tree (once living) but is dead material (non-living). It is not made of metal, so it is classified as non-living → non-metal.

10. C — Shark is a fish (cartilaginous fish). Whale is a mammal. Bat is a mammal. Penguin is a bird.

Section B: Short-Answer Questions (5 × 2 marks = 10 marks)

11. (2 marks — 1 mark each for any two correct differences)
Any two of:

Plant cells have a cell wall made of cellulose; animal cells do not.
Plant cells have chloroplasts (for photosynthesis); animal cells do not.
Plant cells have a large central vacuole; animal cells have small or no vacuoles.
Plant cells are usually regular/fixed in shape; animal cells are irregular/flexible.

12. (a) (1 mark for name + 1 mark for function = 2 marks)
Part A: Gills — Function: Produce and release spores for reproduction.
(Accept: "Carry spores" or "Where spores are formed")

(b) (1 mark)
Part B: Mycelium — It absorbs nutrients from decaying organic matter in the soil for the mushroom. It is the main feeding network of the fungus.

13. (2 marks — ½ mark each for 4 correct groups, or 1 mark for 2 correct groups, etc. Award 2 marks if all 6 organisms correctly placed.)

Group	Organisms
Bacteria	Bacteria
Fungi	Mould, Yeast
Non-flowering plants	Fern, Moss
Flowering plants	Hibiscus plant

14. (2 marks — 1 mark each for any two valid reasons)
Any two of:

Viruses cannot reproduce on their own — they need a living host cell to replicate.
Viruses do not carry out life processes (e.g., respiration, nutrition, growth) outside a host.
Viruses are not made of cells — they are genetic material (DNA/RNA) inside a protein coat.
Viruses do not respond to stimuli or maintain homeostasis independently.

15. (2 marks — 1 mark for correct group, 1 mark for correct reasoning using key)
Amphibian — The key shows: No feathers → No hair/fur → Has moist skin, lays eggs in water → Amphibian (Y).

Section C: Structured / Open-Ended Questions (5 × 4 marks = 20 marks)

16. (a) (2 marks — 1 mark for correct animal, 1 mark for two reasons)
Bat — It has hair/fur as body covering and gives birth to live young (viviparous).
(Accept: breathes with lungs, but must give two distinct reasons from table)

(b) (2 marks — 1 mark similarity, 1 mark difference)
Similarity: Both lay eggs (oviparous).
Difference: Frog lays eggs in water (jelly-like, no shell); lizard lays eggs on land (with leathery shell).
(Accept: Frog undergoes metamorphosis; lizard does not.)

17. (a) (3 marks — 1 mark each)
Organism A: Bacteria — Single-celled, no nucleus (prokaryote), binary fission.
Organism B: Protists — Single-celled, has nucleus (eukaryote), chloroplasts, flagellum (e.g., Euglena).
Organism C: Fungi — Multi-cellular, hyphae, reproduces by spores (e.g., mould).

(b) (1 mark)
Process: Photosynthesis
Condition needed: Light (sunlight)
(Accept: chlorophyll, carbon dioxide, water — but light is the energy source condition)

18. (a) (1 mark)
Fertilisation — Male reproductive cell fuses with female reproductive cell in the ovule.

(b) (2 marks — 1 mark for reducing competition, 1 mark for colonising new areas)
Seed dispersal reduces overcrowding and competition between the parent plant and seedlings for light, water, nutrients, and space. It also allows the species to colonise new habitats, increasing chances of survival.

(c) (1 mark)
The cycle shows that the plant species continues from generation to generation — seeds grow into new plants that produce more seeds, ensuring continuity of the species.

19. (a) (2 marks — 1 mark each)

Helps scientists organise and identify the great variety of living things systematically.
Allows clear communication about organisms using standard names and groups.
(Accept: Shows relationships/evolutionary links; makes study easier; predicts characteristics.)

(b) (2 marks — 1 mark for correct group, 1 mark for explanation using characteristics)
Non-flowering plant (e.g., fern or moss) — It has cell walls made of cellulose and chloroplasts, so it is a plant. It reproduces by spores and does not produce flowers or seeds, so it is a non-flowering plant.
(Must use given characteristics to justify.)

20. (a) (2 marks — 1 mark each)
Producer: Grass (or any plant)
Primary consumer: Grasshopper / Rabbit / Mouse (any herbivore that eats grass directly)

(b) (2 marks — 1 mark each population effect with reason)
Grasshopper population: Increases — Frogs eat grasshoppers; with no frogs, fewer grasshoppers are eaten.
Snake population: Decreases — Snakes eat frogs; with no frogs, snakes lose a food source.
(Accept: Snakes may eat more mice, but overall food decreases so population likely drops.)

(c) (1 mark)
Decomposers break down dead organisms and waste materials into simpler substances, returning nutrients to the soil for plants to reuse (nutrient recycling).

Marking Notes for Teachers:

Award marks for scientifically correct answers even if wording differs.
For open-ended questions, key concepts/keywords must be present.
Deduct ½ mark for missing units only if question requires units (not applicable here).
Common misconceptions to watch: viruses as living, plants not respiring, wood as living, bat as bird, whale as fish.

Total: 40 marks