The symbiotic association in which one partner gains benefit without benefiting or harming the other is known as:
Correct answer: A. Commensalism
- A. Commensalism
- B. Lichen
- C. Mutualism
- D. None of these
Explanation
Commensalism is a +/0 interaction: one organism gains a benefit while the other is neither helped nor harmed. Mutualism differs because both partners benefit.
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