Level: JHS, Basic 8 | Subject: Integrated Science | Strand: Humans and the Environment | Topic: Understanding the Environment
Read the summary notes first, then try these questions. Go back to the summary notes for this topic.
Part A has 20 tick-box questions. Part B has 5 essay questions with a marking guide at the bottom.
Test Yourself: 20 Objective Questions
Tick one answer for each question, then press Review answer. If your answer is wrong, it will be marked first, then the correct answer will show in green.
Essay Questions
- Distinguish between biotic and abiotic factors. Give two examples of each. (6 marks)
- Define the following terms: (a) habitat (b) population (c) community (d) ecosystem. (4 marks)
- Explain mutualism, commensalism and parasitism, with one example of each. (6 marks)
- State four ways in which human activities harm the environment. (4 marks)
- State five ways of conserving the environment. (5 marks)
Essay Questions: Marking Guide for Teachers and Parents
- Biotic factors are the living things in the environment (1), e.g. plants, animals (1 mark for two examples). Abiotic factors are the non-living things (1), e.g. light, water, soil, temperature (1 mark for two examples). Give 2 further marks for clear explanation.
- (a) The place where an organism lives (1). (b) All organisms of one kind in a habitat (1). (c) All populations living together in a habitat (1). (d) A community together with its non-living surroundings (1).
- Mutualism: both benefit, e.g. nitrogen-fixing bacteria in bean roots (2). Commensalism: one benefits and the other is not harmed, e.g. orchid on a tree (2). Parasitism: the parasite benefits and the host is harmed, e.g. tapeworm or tick (2).
- Any four (1 mark each): deforestation, bush burning, illegal mining, overfishing, dynamite fishing, dumping waste, overgrazing, burning fuels.
- Any five (1 mark each): plant trees, create protected areas, obey laws on mining and hunting, rotate crops, control erosion, use clean energy, reduce waste, educate people.
Education Always (education.inspiringalways.com). Original practice questions, not official WAEC or BECE questions.
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