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Primary 5 Science Semestral Assessment 2 (End of Year) Paper 4

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Questions

TuitionGoWhere Practice Paper - Science Primary 5

School: TuitionGoWhere Secondary School (AI) Subject: Science Level: Primary 5 Paper: SA2 (Version 4 of 5) Duration: 60 minutes Total Marks: 50

Name: ________________________ Class: ________________________ Date: ________________________

Instructions

Answer ALL questions.
Write your answers in the spaces provided.
For multiple-choice questions, shade the correct oval on the answer sheet.
Show all working clearly where required.
The use of calculators is not allowed.

Section A: Multiple Choice (10 marks)

Questions 1–10: Choose the correct answer. Each question carries 1 mark.

1. Which of the following is a characteristic used to classify living things?

(A) Colour of the organism
(B) Number of legs
(C) Type of food it eats
(D) Place where it lives

2. The diagram below shows a group of organisms. Which characteristic is most likely used to sort them into two groups?

[Image description: A set of pictures showing a butterfly, a beetle, a spider, and a snail.]

(A) Whether they have wings
(B) Whether they have six legs
(C) Whether they have a shell
(D) Whether they can fly

3. Which of the following is a non-living thing?

(A) Mushroom
(B) Moss
(C) Coral
(D) River

4. A student grouped the following animals: bat, penguin, and ostrich. What characteristic do they share?

(A) They can all fly.
(B) They are all birds.
(C) They all have feathers.
(D) They all live in cold places.

5. Which of the following is a flowering plant?

(A) Fern
(B) Moss
(C) Sunflower
(D) Pine tree

6. What is the main purpose of classifying living things?

(A) To give every organism a unique name
(B) To group organisms based on shared characteristics for easier study
(C) To count the number of organisms in an area
(D) To determine which organisms are useful to humans

7. Which of the following organisms reproduces by spores?

(A) Rose plant
(B) Fern
(C) Mango tree
(D) Orchid

8. A fish and a dolphin both live in water. Which characteristic would best show that they belong to different groups?

(A) Their body shape
(B) Their size
(C) Whether they have fins
(D) Whether they breathe with gills or lungs

9. Which of the following is a characteristic of mammals?

(A) They have scales.
(B) They lay eggs.
(C) They feed their young with milk.
(D) They have feathers.

10. The table below shows the characteristics of four organisms.

Organism	Has backbone	Has legs	Has wings
P	Yes	Yes	No
Q	Yes	Yes	Yes
R	No	Yes	Yes
S	No	No	No

Which organism is most likely an insect?

(A) P
(B) Q
(C) R
(D) S

Section B: Short Answer (20 marks)

Questions 11–15: Answer each question in the spaces provided. Show your reasoning where necessary.

11. State two characteristics that can be used to classify the following animals into two groups: shark, whale, goldfish, dolphin.

___________________________________________________________________________ [2 marks]

12. The diagram below shows four organisms: A (fern), B (mushroom), C (algae), D (grass).

[Image description: Illustrations of a fern, a mushroom, a patch of algae, and a blade of grass.]

(a) Which organism is a non-flowering plant that reproduces by spores? [1 mark]

(b) Which organism is NOT a plant? Give a reason for your answer. [2 marks]

13. A student found an unknown organism near a pond. It has the following characteristics:

It has a soft, moist body.
It has no backbone.
It has a shell.

(a) Name one group this organism could belong to. [1 mark]

(b) State one other characteristic the student could observe to help classify the organism more precisely. [1 mark]

14. The table below shows the characteristics of three plants.

Plant	Has flowers	Has seeds	Has roots
W	Yes	Yes	Yes
X	No	No	Yes
Y	No	No	No

(a) Which plant is most likely a fern? Explain your answer. [2 marks]

(b) Which plant is most likely an alga? Explain your answer. [2 marks]

15. Study the classification key below.

1a — Organism has a backbone ................ Go to 2
1b — Organism has no backbone ............... Go to 3

2a — Organism has feathers ................. Bird
2b — Organism has fur/hair ................ Mammal

3a — Organism has a shell ................. Mollusc
3b — Organism has no shell ................ Go to 4

4a — Organism has six legs ............... Insect
4b — Organism has more than six legs ..... Arachnid

Use the key to identify the following organisms:

(i) An organism with a backbone and feathers. [1 mark]

(ii) An organism with no backbone, no shell, and six legs. [1 mark]

(iii) An organism with no backbone and a shell. [1 mark]

Section C: Structured / Application (20 marks)

Questions 16–20: Answer all questions. Show your working and reasoning clearly.

16. The bar chart below shows the number of different types of organisms found in a garden.

[Image description: A bar chart with the following data — Beetles: 25, Spiders: 12, Snails: 8, Birds: 6, Earthworms: 15]

(a) Which type of organism was found in the greatest number? [1 mark]

(b) How many more beetles were found than snails? Show your working. [2 marks]

(c) Classify the organisms into two groups: those with backbones and those without backbones. List them in the table below. [2 marks]

With Backbone	Without Backbone

17. A group of students went on a nature walk and recorded the organisms they observed. Their findings are shown below.

Organism	Has legs	Has wings	Has backbone	Has shell
Grasshopper	Yes	Yes	No	No
Frog	Yes	No	Yes	No
Snail	No	No	No	Yes
Eagle	Yes	Yes	Yes	No
Caterpillar	Yes	No	No	No

(a) How many organisms in the table have a backbone? [1 mark]

(b) Which organism is an insect? Give two reasons for your answer. [3 marks]

(c) The caterpillar will eventually change into a butterfly. Would you classify the butterfly in the same group as the caterpillar? Explain your answer. [2 marks]

18. Study the following information about four animals.

Animal P: Has dry, scaly skin. Breathes through lungs. Lays eggs on land. Animal Q: Has moist, smooth skin. Breathes through gills when young and lungs when adult. Lays eggs in water. Animal R: Has feathers. Breathes through lungs. Lays eggs on land. Animal S: Has fur. Breathes through lungs. Gives birth to live young.

(a) Identify each animal. Write the correct group for P, Q, R, and S. [4 marks]

P: ________________________ Q: ________________________ R: ________________________ S: ________________________

(b) Which of the above animals is most closely related to Animal R? Explain your answer. [2 marks]

19. A student wants to create a classification key to sort the following five organisms: fish, frog, lizard, bird, mammal.

(a) State one characteristic the student could use to first divide the organisms into two groups. [1 mark]

(b) Using the characteristic you stated in (a), draw a simple classification key with at least two levels to sort all five organisms. [3 marks]

20. The diagram below shows a forest ecosystem.

[Image description: A simple illustration of a forest with trees, mushrooms on the ground, a bird in a tree, a squirrel on a branch, a snake on the ground, and a frog near a stream.]

(a) List three different characteristics that can be used to classify the organisms in this forest. [3 marks]

(b) Explain why it is important for scientists to classify living things. Give two reasons. [2 marks]

End of Paper

Answers

TuitionGoWhere Practice Paper - Science Primary 5

SA2 (Version 4 of 5) — Answer Key

Section A: Multiple Choice (10 marks)

Qn	Answer	Marks	Notes
1	(B) Number of legs	1	Classification is based on observable structural characteristics. Number of legs is a valid taxonomic trait. Colour, diet, and habitat are less reliable for classification.
2	(B) Whether they have six legs	1	Butterfly and beetle have six legs (insects); spider has eight legs (arachnid); snail has no legs (mollusc). This is the most scientifically valid grouping characteristic.
3	(D) River	1	A river is non-living. Mushroom (fungus), moss (plant), and coral (animal) are all living things. Common mistake: students may think coral is non-living because it is hard and rock-like.
4	(C) They all have feathers	1	Bat is a mammal (has fur, not feathers). Penguin and ostrice are birds. All three are warm-blooded, but the shared characteristic among the birds is feathers. The best answer is (C) as it is a defining trait of birds.
5	(C) Sunflower	1	Sunflower is a flowering plant (angiosperm). Fern and moss reproduce by spores. Pine tree is a gymnosperm (has cones, not flowers).
6	(B) To group organisms based on shared characteristics for easier study	1	The main purpose of classification is to organise the diversity of life into meaningful groups for identification and study.
7	(B) Fern	1	Ferns reproduce by spores. Rose, mango tree, and orchid are flowering plants that reproduce by seeds.
8	(D) Whether they breathe with gills or lungs	1	Fish breathe with gills; dolphins breathe with lungs. This is a fundamental difference showing they belong to different classes (fish vs. mammal). Body shape is a superficial similarity due to convergent evolution.
9	(C) They feed their young with milk	1	This is a defining characteristic of mammals. Scales → reptiles/fish; lay eggs → reptiles/birds/monotremes; feathers → birds.
10	(C) R	1	Insects have no backbone, have legs, and have wings. R matches: no backbone, yes legs, yes wings. P is a mammal/reptile (backbone + legs, no wings). Q is a bird (backbone + legs + wings). S could be a worm or snake (no backbone, no legs, no wings).

Section B: Short Answer (20 marks)

11. [2 marks]

Answer:

Whether they breathe with gills or lungs.
Whether they have scales or skin/fur.
Whether they are cold-blooded or warm-blooded.
Whether they lay eggs or give birth to live young.

Marking scheme: 1 mark for each valid characteristic, max 2 marks. Accept any two scientifically valid distinguishing characteristics.

Common mistake: Students may state "lives in water" — this is a habitat characteristic, not a structural/biological classification trait. Do not award marks for habitat-based answers.

12. [3 marks]

(a) A (Fern) [1 mark]

(b) B (Mushroom) [1 mark] — It is a fungus and does not have chlorophyll / cannot make its own food by photosynthesis / does not have true roots, stems, and leaves. [1 mark]

Marking scheme: Award 1 mark for correctly identifying organism B. Award 1 mark for a valid reason (must relate to it being a fungus, not a plant).

13. [2 marks]

(a) Mollusc / Gastropod [1 mark]

(b) Any one of the following: [1 mark]

Whether it has a single shell or two shells (bivalve)
Whether it has tentacles/eyes on stalks
Whether it has a muscular foot
The shape of the shell (spiral, flat, etc.)
Whether it lives in water or on land

Marking scheme: 1 mark for correct group. 1 mark for any valid observable characteristic that aids further classification.

14. [4 marks]

(a) Plant X [1 mark] — It has roots but no flowers or seeds, which means it is a non-flowering plant that likely reproduces by spores (like a fern). [1 mark]

(b) Plant Y [1 mark] — It has no flowers, no seeds, and no roots, which means it is a simple plant-like organism such as an alga that does not have true plant structures. [1 mark]

Marking scheme: 1 mark for correct identification + 1 mark for valid explanation for each part.

15. [3 marks]

(i) Bird [1 mark]

(ii) Insect [1 mark]

(iii) Mollusc [1 mark]

Marking scheme: 1 mark each. Follow the key step by step. Common mistake: students may confuse arachnid and insect — remind them that insects have 6 legs, arachnids have 8.

Section C: Structured / Application (20 marks)

16. [5 marks]

(a) Beetles [1 mark]

(b) 25 − 8 = 17 [2 marks]

Working: Number of beetles − Number of snails = 25 − 8 = 17

Marking scheme: 1 mark for correct subtraction, 1 mark for correct answer with unit (or number).

(c) [2 marks]

With Backbone	Without Backbone
Birds	Beetles
	Spiders
	Snails
	Earthworms

Marking scheme: 1 mark for correctly placing Birds in "With Backbone". 1 mark for correctly placing all four invertebrates in "Without Backbone". Deduct ½ mark for each error.

17. [6 marks]

(a) 2 (Frog and Eagle) [1 mark]

(b) Grasshopper [1 mark]

Reason 1: It has no backbone (it is an invertebrate). [1 mark]
Reason 2: It has six legs and wings, which are characteristics of insects. [1 mark]

Note: Caterpillar also has no backbone and legs, but it does not have wings and has more than 6 legs (prolegs), so it is a larva. Award marks for grasshopper with valid reasons.

(c) Yes [1 mark] — The caterpillar and butterfly are the same organism at different stages of its life cycle (metamorphosis). They share the same genetic material and belong to the same species/group (insect — butterfly is an adult insect). [1 mark]

Marking scheme: 1 mark for "Yes", 1 mark for explanation referencing life cycle / same organism / same species.

18. [6 marks]

(a) [4 marks — 1 mark each]

P: Reptile — Dry scaly skin, lays eggs on land, breathes through lungs.
Q: Amphibian — Moist smooth skin, breathes through gills (young) and lungs (adult), lays eggs in water.
R: Bird — Feathers, lays eggs on land, breathes through lungs.
S: Mammal — Fur, gives birth to live young, breathes through lungs.

(b) Animal P (Reptile) [1 mark] — Both Animal R (bird) and Animal P (reptile) lay eggs on land and breathe through lungs. Birds and reptiles share a more recent common ancestor than birds and mammals/amphibians. Both are also cold-blooded (reptile) or share egg-laying traits. [1 mark]

Note: Accept any reasonable explanation that references shared characteristics between birds and reptiles (e.g., both lay eggs on land, both have scales/feathers which are related structures).

19. [4 marks]

(a) Any one of the following: [1 mark]

Whether they have feathers or not
Whether they have fur/hair or not
Whether they lay eggs or give birth to live young
Whether they are warm-blooded or cold-blooded
Whether they have scales or moist skin

(b) Sample key using "Has feathers / Does not have feathers": [3 marks]

1a — Has feathers ............................ Bird
1b — Does not have feathers ................. Go to 2

2a — Has fur/hair ........................... Mammal
2b — Does not have fur/hair ................. Go to 3

3a — Has dry, scaly skin ................... Lizard (Reptile)
3b — Has moist skin ......................... Go to 4

4a — Lives in water (young), lays eggs in water ... Frog (Amphibian)
4b — Lives in water, has fins ................ Fish

Marking scheme: Award 1 mark for a logical first division. Award 1 mark for correct second-level split. Award 1 mark for correctly sorting all five organisms. Accept any valid key structure.

Common mistake: Students may create a key that does not account for all five organisms. Check that every organism can be identified using the key.

20. [5 marks]

(a) Any three of the following: [3 marks — 1 mark each]

Whether the organism has a backbone or not
Whether it has legs and how many
Whether it has wings or not
Whether it has feathers, fur, scales, or moist skin
Whether it has roots, stems, and leaves (for plants)
Whether it can make its own food (producer) or not
Whether it has flowers/seeds or reproduces by spores

(b) Any two of the following: [2 marks — 1 mark each]

It helps scientists organise and make sense of the huge variety of living things.
It makes it easier to identify and name new or unknown organisms.
It helps scientists understand the relationships between different organisms.
It allows scientists to study and compare organisms more systematically.
It helps in conservation efforts by identifying which species are related or endangered.

Marking scheme: 1 mark per valid reason, max 2 marks. Answers must go beyond "it is easier" — require a scientific justification.

Summary of Marks

Section	Marks
A: Multiple Choice (Q1–10)	10
B: Short Answer (Q11–15)	20
C: Structured / Application (Q16–20)	20
Total	50

Common Mistakes & Marking Notes

Habitat vs. structural traits: Students frequently use where an organism lives rather than its physical/biological characteristics for classification. Remind students that classification is based on observable structural and biological features.
Coral confusion: Many students classify coral as non-living or as a plant. Coral is a living animal (cnidarian).
Dolphin vs. fish: Students often group dolphins with fish because both live in water. Emphasise that dolphins breathe with lungs, are warm-blooded, and give birth to live young — all mammalian traits.
Butterfly life cycle: Students may think caterpillar and butterfly are different organisms. Reinforce the concept of complete metamorphosis.
Classification keys: Students often create keys that are not mutually exclusive or that do not cover all organisms. Practice with dichotomous keys is essential.
Non-examples: When asked for a "non-living" or "non-plant" example, students sometimes give an organism from a different kingdom without realising it. Encourage careful reading of the question.