What is a population?
Reveal answer
All the organisms of one species in an area.
Key words: one species
5(a) THE ORGANISM IN THE ENVIRONMENT · RECALL
5.1 Population, community, habitat and ecosystem
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What is a community?
Reveal answer
All the populations in an area.
Key words: populations
What is an ecosystem?
Reveal answer
A community and its physical environment.
Key words: community
What is meant by the term community?
Reveal answer
All the populations of different species living and interacting in the same area.
Key words: community
What is meant by the term habitat?
Reveal answer
The place where an organism lives.
Key words: habitat
What is meant by the term ecosystem?
Reveal answer
A community and its abiotic environment, interacting together.
Key words: ecosystem
What is meant by the term abiotic?
Reveal answer
Non-living, such as temperature, light or pH.
Key words: abiotic
What is meant by the term biotic?
Reveal answer
Living, or caused by living organisms.
Key words: biotic
Levels of ecological organisation, Population. What it includes? Pond example?
Reveal answer
What it includes: One species in one area at one time. Pond example: All the common frogs in the pond.
Key words: Population
Levels of ecological organisation, Community. What it includes? Pond example?
Reveal answer
What it includes: All populations of all species in the area. Pond example: Frogs, pondweed, water fleas, algae and bacteria.
Key words: Community
Levels of ecological organisation, Habitat. What it includes? Pond example?
Reveal answer
What it includes: The place where an organism lives. Pond example: Shallow, weedy margins used by frog tadpoles.
Key words: Habitat
Levels of ecological organisation, Ecosystem. What it includes? Pond example?
Reveal answer
What it includes: Community plus abiotic environment, and their interactions. Pond example: The pond organisms with its water, mud, light and temperature.
Key words: Ecosystem
True or false, and why? “A population contains all the animals in an area.”
Reveal answer
False. A population is one species only. All species together form the community.
True or false, and why? “Habitat and ecosystem mean the same thing.”
Reveal answer
False. A habitat is where an organism lives; an ecosystem is the whole interacting system of organisms and abiotic factors.
True or false, and why? “A community includes the soil and water.”
Reveal answer
False. A community contains only living organisms. Adding the abiotic environment makes an ecosystem.