What ecological term describes the symbiotic relationship between epiphytic orchids growing on the high branches of tall rainforest trees?
Answer and explanation
Correct answer: D. commensalism
- Step 1: Commensalism is a relationship where one organism benefits while the other is neither harmed nor helped (+/0). Step 2. The orchid gains physical support and sunlight up in the canopy, without taking water or nutrients from the host tree. Answer: commensalism. Why not the others: Parasitism harms the host; mutualism benefits both; predation kills the host.
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