Question

Define commensalism. Give one example.

Answer 1

Commensalism is a symbiotic relationship in which one organism benefits and the other organism is neither helped nor harmed. The examples include egret bird and cattle, orchids and trees, barnacles, burdock weeds, and remora.
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Answer 2

Commensalism:

In environment, organisms interact with one another. In this interaction, both organism gets benefited; one may get benefited whereas other is harmed etc. The type of relationship in which one organism gains benefits whereas the other organism remains neither helped nor harmed is called commensalism. In this type of interaction, one organism gain benefits without harming the other organisms in which it is in contact.

The example of species exhibiting commensalism is anemone and clown fish.