Ecology: Populations

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What is an Autotroph?

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An organism that produces its own food using sunlight or chemical energy, such as plants.

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What is a Community in ecology?

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A collection of different populations of organisms that live in the same area and interact with one another.

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What is a Population?

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A group of the same type of organisms living in the same place at the same time.

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What is Commensalism?

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A type of symbiosis where one organism benefits and the other is neither helped nor harmed.

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What is an Ecosystem?

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A community of living organisms and their physical environment interacting as a system.

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What is Mutualism?

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A type of symbiosis where both organisms benefit from the relationship.

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What is Parasitism?

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A type of symbiosis where one organism benefits at the expense of the other.

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What is a Limiting Factor?

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An environmental condition that restricts the growth, abundance, or distribution of an organism or population.

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What is a Threatened Species?

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A species that is likely to become endangered in the foreseeable future.

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What is an Ecosphere?

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The global sum of all ecosystems; the zone of life on Earth.