Module 1a Terms

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Symbiosis

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Interaction between two different species living together and at least one benefits from the relationship

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Mutualism

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A type of symbiosis where both species benefit from the interaction.

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Commensalism

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

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Parasitism

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A type of symbiosis where one organism benefits and the other is harmed.

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Predation

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An interaction where one organism, the predator, kills and eats another organism, the prey.

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Competition

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An interaction between organisms or species in which both organisms are competing for the same resource (food, sunlight, space)

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Limiting Factors

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Environmental factors that decrease population growth.

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Carrying Capacity

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The maximum population size of a species that an environment can support.

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Primary Consumer

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An organism that feeds on primary producers; herbivores.

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Secondary Consumer

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An organism that feeds on primary consumers; carnivores.