Ecology Flashcards

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Ecology

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Scientific study of all the interrelationships between organisms and their environment

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Biosphere

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A relatively thin layer of Earth and its atmosphere that supports life

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Biotic Factors

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Any living factor in an organism’s environment

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Abiotic Factors

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Any nonliving factor in an organism’s environment such as soil, water, temperature, and light availability

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Limiting Factor

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Biotic or abiotic factor that restricts the number, distribution, or reproduction of a population within a community

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Population

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A group of organisms of the same species that occupy the same geographic place at the same time

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Symbiosis

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Close mutualistic, parasitic, or commensal association between two or more species that live together

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Mutualism

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Symbiotic relationship in which both organisms benefit

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Commensalism

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Symbiotic relationship in which one organism benefits and the other organism is neither helped nor harmed

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Parasitism

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Symbiotic relationship in which one organism benefits at the expense of another