Identify the commensalism from the following associations:

Sea anemone and clown fish

The correct answer is Option (4)- Sea anemone and clown fish

Commensalism: This is the interaction in which one species benefits and the other is neither harmed nor benefited.

An orchid growing as an epiphyte on a mango branch, and barnacles growing on the back of a whale benefit while neither the mango tree nor the whale derives any apparent benefit. Sea anemone and the clown fish shows commensalism.

The cattle egret and grazing cattle in close association, a sight you are most likely to catch if you live in farmed rural areas, is a classic example of commensalism.