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A lichen is composed of two organisms—a fungus and an alga—that depend upon each other for survival. Which term BEST describes their relationship? A. parasitism B. mutualism C. …

A lichen is composed of two organisms—a fungus and an alga—that depend upon each other for survival. Which term BEST describes their relationship? A. parasitism B. mutualism C. …
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A lichen is composed of two organisms—a fungus and an alga—that depend upon each other for survival. Which term BEST describes their relationship?

A. parasitism
B. mutualism
C. symbiosis
D. commensalism

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User Vanlooverenkoen
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1 Answer

4 votes
B. Is correct because in mutualism both species benefit. It could be symbiosis but mutualism is more specific.
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User Sdornan
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