Question:
Relationship between two organisms in which one organism is benefitted and the other remains unaffected is called
Relationship between two organisms in which one organism is benefitted and the other remains unaffected is called
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Commensalism = (+/0) One benefits, other unaffected; Mutualism = (+/+) Both benefit; Parasitism = (+/-) One benefits, host harmed.
Updated On: Sep 15, 2026
- Parasitism
- Commensalism
- Symbiosis
- Syntrophism
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
Interspecific biological interactions are categorized by the net fitness effect ($+, -, 0$) on the participating species.
Step 2: Detailed Explanation:
Commensalism is an asymmetric symbiotic interaction (+/0) where one species (the commensal) derives nutritional, transport, or shelter benefit without causing harm or benefit to the host organism (e.g., epiphytic orchids on tree branches, epiphytic bacteria on leaf phyllosphere).
Parasitism is (+/-), and mutualism/symbiosis is (+/+).
Step 3: Final Answer:
Hence, the relationship is commensalism.
Interspecific biological interactions are categorized by the net fitness effect ($+, -, 0$) on the participating species.
Step 2: Detailed Explanation:
Commensalism is an asymmetric symbiotic interaction (+/0) where one species (the commensal) derives nutritional, transport, or shelter benefit without causing harm or benefit to the host organism (e.g., epiphytic orchids on tree branches, epiphytic bacteria on leaf phyllosphere).
Parasitism is (+/-), and mutualism/symbiosis is (+/+).
Step 3: Final Answer:
Hence, the relationship is commensalism.
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