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Primary 6 PSLE Science Semestral Assessment 2 (End of Year) Paper 2

Free P6 PSLE Science SA2 Paper 2, HY3 Exam version, with questions, answers, and PSLE-focused practice for Singapore students.

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Questions

TuitionGoWhere Exam Practice (AI) — Science Primary 6 PSLE

SA2 Practice Paper (Version 2 of 5)

School: TuitionGoWhere Exam Practice (AI)
Subject: Science
Level: Primary 6 (PSLE)
Paper: SA2 Practice Paper
Version: 2
Duration: 60 minutes
Total Marks: 60

Name: ___________________________
Class: ___________________________
Date: ___________________________

Instructions:

This paper contains 20 questions on the topic of Diversity.
Section A: 10 multiple-choice questions (1 mark each).
Section B: 6 short-answer questions (2 marks each).
Section C: 4 structured questions (total 28 marks).
Answer all questions in the spaces provided.
Marks for each question are shown in brackets [ ].

Section A (10 marks)

Answer all questions. Each question carries 1 mark.

1. Which of the following is a correct example of diversity among living things? [1]
A. A cat and a dog having the same colour fur
B. Different shapes of leaves on various plants
C. Two boys in the same class wearing the same shirt
D. A table and a chair made of wood

2. Which group of organisms can make their own food? [1]
A. Consumers
B. Decomposers
C. Producers
D. Predators

3. A habitat is best described as: [1]
A. A group of the same kind of organism
B. The place where an organism lives
C. A type of food chain
D. A community of humans

4. Which of these shows the greatest diversity of living things? [1]
A. A pond with only one type of fish
B. A field with grass, insects, birds and rabbits
C. A cupboard with only books
D. A tank with three goldfish of the same kind

5. Fungi are usually classified separately from plants because they: [1]
A. Can move from place to place
B. Do not make their own food using sunlight
C. Have green leaves
D. Live only in water

6. Which of the following is NOT a characteristic used to group animals? [1]
A. Number of legs
B. Colour of school bag
C. Body covering
D. How they reproduce

7. A population is: [1]
A. All the different plants in a garden
B. A group of the same kind of organism living together
C. A single rabbit
D. The Sun, soil and water in a habitat

8. Which of these is a non-living part of the environment? [1]
A. Earthworm
B. Moss
C. Rock
D. Butterfly

9. Birds, reptiles and mammals are grouped as vertebrates because they: [1]
A. Can fly
B. Have a backbone
C. Live on land
D. Are all consumers

10. Which statement about diversity is true? [1]
A. Diversity means all organisms are exactly the same
B. Diversity helps living things survive in different environments
C. Only animals show diversity
D. Plants do not show diversity

Section B (12 marks)

Answer all questions. Each question carries 2 marks.

11. Name two ways in which plants can be different from one another. [2]

12. State one reason why scientists group living things. [2]

13. Give one example of a decomposer and state what it does. [2]

14. Explain why a mangrove swamp can support a different community from a garden. [2]

15. List two non-living things found in a pond habitat. [2]

16. A student says, "All insects are pests." Give one reason why this is not a good description of diversity. [2]

Section C (28 marks)

Answer all questions. Marks shown in brackets.

17. The diagram below shows some organisms found in a field.

Diagram for Q17 (P6 Science)

Generated diagram for Q17.

(a) Name the producer in the diagram. [1]
(b) Draw a food chain with three organisms from the diagram. [2]
(c) What role does the mushroom play in this environment? [1]

18. A class collected living things from a school garden and grouped them as shown. [6]

Group 1: rose plant, fern, grass
Group 2: spider, ant, butterfly
Group 3: earthworm, snail

(a) What characteristic separates Group 1 from Group 2? [1]
(b) Group 3 animals do not have bones inside their bodies. What word describes them? [1]
(c) Give one more example for Group 2. [1]
(d) Explain why grouping helps us study diversity. [3]

19. Read the passage. [8]
"A mangrove swamp is a coastal habitat. It has muddy soil and salt water. Many crabs, fish and special roots of mangrove trees live there. A garden habitat has soil, flowers and many insects. The living things in each place are suited to their surroundings."

(a) Name one physical difference between the two habitats. [1]
(b) Name one organism found in the mangrove swamp. [1]
(c) Why might the same type of organism not live in both habitats? [2]
(d) State how diversity is shown by these two habitats. [4]

20. A student made a table of four animals. [10]

Animal	Has backbone?	Covers body with	Breathes with
Frog	Yes	Moist skin	Lungs & skin
Eagle	Yes	Feathers	Lungs
Snake	Yes	Scales	Lungs
Bee	No	Hard shell	Tubes

(a) Which animals are vertebrates? [1]
(b) Which animal is an invertebrate? [1]
(c) How are the eagle and snake alike in two ways? [2]
(d) Explain how the table shows diversity among animals. [6]

End of Paper

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Answers

TuitionGoWhere Exam Practice (AI) — Science Primary 6 PSLE

SA2 Practice Paper (Version 2) — Answer Key

Total Marks: 60

Section A (10 marks)

1. B [1]
Teaching note: Diversity means differences among living things. Different leaf shapes show plant diversity. A and C are same-ness, D are non-living.

2. C [1]
Producers (plants) make food by photosynthesis. Consumers eat others; decomposers break down dead matter.

3. B [1]
A habitat is the natural home of an organism.

4. B [1]
More kinds of organisms = greater diversity. Field has plants + several animal types.

5. B [1]
Fungi absorb food; they lack chlorophyll and do not photosynthesise like plants.

6. B [1]
School bag colour is not a biological trait.

7. B [1]
Population = same species in one place.

8. C [1]
Rock is non-living; others are organisms.

9. B [1]
Vertebrates have a backbone/spine.

10. B [1]
Diversity increases survival by filling different roles.

Section B (12 marks)

11. [2] Any two:

leaf shape / size
flower colour
height
type of stem
(1 mark each)

12. [2]
To organise living things and study their characteristics easily. (2 marks for clear reason)

13. [2]
Example: mushroom / earthworm (1). It breaks down dead organisms (1).

14. [2]
Mangrove has salt water and mud; garden has soil and flowers (1). Different conditions support different organisms (1).

15. [2]
Any two: water, mud, rock, sunlight (1 each).

16. [2]
Insects include helpful ones like bees (pollinate) and butterflies (1); not all are pests (1).

Section C (28 marks)

17. [4]
(a) Grass [1]
(b) Sun → grass → rabbit → hawk (or Sun→grass→hawk not typical; accept grass→rabbit→hawk) [2]
(c) Decomposer; breaks down dead matter [1]

18. [6]
(a) Group 1 are plants, Group 2 are animals [1]
(b) Invertebrates [1]
(c) e.g., beetle, ladybird [1]
(d) [3] Grouping shows differences (plants vs animals vs boneless); helps compare features; makes study of many organisms easier. (1 mark each point)

19. [8]
(a) Mangrove has salt water + mud; garden has soil [1]
(b) Crab / fish / mangrove tree [1]
(c) [2] Conditions differ (salt, mud) so organisms adapted to one may not survive in the other (1+1).
(d) [4] Two habitats have different organisms (2); each has its own community (1); shows variety of life in different places (1).

20. [10]
(a) Frog, eagle, snake [1]
(b) Bee [1]
(c) Both vertebrates; both breathe with lungs [2]
(d) [6] Table shows differences in backbone, covering, breathing (2); groups vertebrates/invertebrates (2); displays variety of animal features (2).

End of Answer Key