Symbiosis

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What is symbiosis?

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Symbiosis is a close and long-term interaction between two different species, which can be beneficial, neutral, or harmful to one or both parties.

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What is mutualism?

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Mutualism is a type of symbiotic relationship where both organisms benefit from the interaction.

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What is commensalism?

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Commensalism is a type of symbiotic relationship where one organism benefits while the other is neither helped nor harmed.

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What is parasitism?

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Parasitism is a type of symbiotic relationship where one organism benefits at the expense of the other, which is harmed.

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Example of mutualism:

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A bee pollinating a flower while obtaining nectar.

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Example of commensalism:

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Cattle egrets feeding on insects stirred up by grazing cattle.

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Example of parasitism:

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Aphids feeding on the leaves of plants, harming them.

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What is competition in ecology?

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Competition occurs when two or more organisms vie for the same resources, such as food, space, or light.

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Define ecological niche.

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An ecological niche is the role and position a species has in its environment, including all interactions with biotic and abiotic factors.

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What is a keystone species?

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A keystone species is a species that has a disproportionately large effect on its environment relative to its abundance.