Primary 6 PSLE Science Semestral Assessment 2 (End of Year) Paper 3

TuitionGoWhere Exam Practice (AI) - Science Primary 6 PSLE

School: TuitionGoWhere Exam Practice (AI)
Subject: Science
Level: Primary 6 (PSLE)
Paper: SA2 Practice Paper (Version 3 of 5)
Duration: 60 minutes
Total Marks: 40

Name: ___________________________
Class: ____________
Date: ____________

Instructions:

• This paper contains 20 questions on the topic of Diversity.
• Answer all questions in the spaces provided.
• Section A: 10 multiple-choice questions (1 mark each).
• Section B: 6 short-answer questions (2 marks each).
• Section C: 4 structured questions (1 mark, 2 marks, 3 marks, 3 marks).
• Use clear scientific terms in your answers.

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Section A (10 marks)

Answer all questions. Each question carries 1 mark.

1. Which of the following is an example of diversity among living things?
A) A cat sleeping
B) Different leaf shapes of plants in a garden
C) A stone rolling downhill
D) Water evaporating

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

3. A population is best described as:
A) One rabbit
B) All the grasshoppers of the same kind in a field
C) A pond and all its living things
D) A single type of plant cell

4. Which of these is NOT a reason organisms show diversity?
A) Different habitats
B) Different food sources
C) All organisms having the same DNA
D) Adaptations to environment

5. Mangrove swamps are a habitat that supports:
A) Only birds
B) A community of many populations
C) No decomposers
D) Only producers

6. Which statement about decomposers is true?
A) They hunt other animals
B) They break down dead organisms
C) They make food from sunlight
D) They are always plants

7. A student sees a lizard with a long tail and sticky toes. These are examples of:
A) Behavioural adaptations
B) Structural adaptations
C) Unfavourable conditions
D) Populations

8. Which is a positive human impact on the environment?
A) Deforestation
B) Dumping rubbish into rivers
C) Reforestation
D) Air pollution

9. Diversity in non-living things can be seen in:
A) Different colours of rocks
B) All animals being the same
C) One type of cloud
D) A single temperature reading

10. Food chains show:
A) How animals play
B) The flow of energy from the Sun to producers to consumers
C) Only decomposers
D) The shape of leaves

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Section B (12 marks)

Answer all questions. Each question carries 2 marks.

11. Name two physical characteristics of the environment that affect the survival of organisms.

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12. Explain why a community in a pond is different from a population of frogs in the same pond.

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13. Give one structural adaptation and one behavioural adaptation of an animal you know.

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14. State two negative impacts of man on the environment.

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15. A garden has butterflies, grass, ants, and mushrooms. Which is the producer, which is the decomposer?

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16. Why is diversity important for a habitat to remain healthy?

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Section C (18 marks)

Answer all questions. Marks shown per question.

17. (3 marks)

Generated diagram for 17.

Using the food chain above, state the producer, one consumer, and the predator of the grasshopper.

18. (2 marks)
A seashore habitat has crabs, seaweed, and gulls. Explain how the seaweed and crabs show diversity in roles.

19. (3 marks)
A field becomes very dry for many months. Describe two things that may happen to the organisms living there because of this unfavourable environment.

20. (3 marks)
Compare a pond community and a mangrove swamp community. How are they similar and how are they different in terms of diversity?