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 are the three main types of symbiotic relationships?

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The three main types of symbiotic relationships are mutualism (both species benefit), commensalism (one species benefits, the other is unaffected), and parasitism (one species benefits at the expense of the other).

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In a parasitic relationship, who is the host?

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The host is the organism that is harmed or used by the parasite for nourishment or habitat.

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What is an example of mutualism?

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An example of mutualism is the relationship between bees and flowering plants, where bees get nectar for food and plants get pollinated.

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What is an example of commensalism?

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An example of commensalism is barnacles attaching to a whale; the barnacles benefit from being carried to food sources, while the whale is not significantly affected.

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What is an example of parasitism?

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An example of parasitism is a tapeworm living in the intestines of a mammal, where the tapeworm benefits by absorbing nutrients while harming the host.

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What is a food chain?

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A food chain is a linear sequence that shows how energy and nutrients flow from one organism to another in an ecosystem.

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What is a food web?

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A food web is a complex network of interconnected food chains that illustrates how different organisms are related through feeding relationships.

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What does the arrow in a food chain represent?

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The arrow in a food chain represents the direction of energy flow from one organism to another.

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What percentage of energy is typically passed from one trophic level to the next?

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Typically, only about 10% of energy is passed from one trophic level to the next.

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