Symbiosis Flashcard

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What is symbiosis?

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The long term living together of unlike organisms

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What is mutualistic symbiosis?

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When both partners benefit from the relationship

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What is parasitic symbiosis?

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When one organism benefits while the other is harmed

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Commensalistic symbiosis

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When one organism benefits while the other is not helped or harmed

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How do squirrels contribute to the evolutionary fitness of oak trees?

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By stashing fresh acorns in hiding places for future growth

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What is an example of a parasite?

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Ticks and opossums

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How do ticks sometimes act more like commensalists than parasites?

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By taking very little blood from their hosts

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What is the benefit of opossums eating ticks?

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Ticks provide a nutritious food source for opossums

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What did the study of cholera bacteria reveal?

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Cholera bacteria can evolve to become commensalistic in countries with good water filtration

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What is the importance of understanding symbiosis?

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To control the spread of diseases