Ecosystems, populations and niches Quiz
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5 questions, one answer each
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1. Which describes an ecosystem?
- A. All the organisms of one species in an area
- B. All the living organisms in an area
- C. A community and its non-living environment
- D. The place where an organism lives
2. Which is a biotic factor?
- A. Temperature
- B. Soil pH
- C. Light intensity
- D. Competition for food
3. What is a niche?
- A. The physical place where a species lives
- B. The role of a species in its ecosystem, governed by adaptation to abiotic and biotic conditions
- C. The number of individuals in a population
- D. The group of species in a habitat
4. All the sparrows in a garden at one time are
- A. a community
- B. an ecosystem
- C. a niche
- D. a population
5. A reservoir is built, which raises the water temperature. This is an example of
- A. an abiotic change affecting populations
- B. a biotic change affecting populations
- C. a community changing a niche
- D. an ecosystem becoming a habitat