Commensalism MCQ - Practice Questions with Answers

• It is the interaction between two species, where one species is benefitted and the other is neither harmed nor benefitted.

Some examples of commensalism are:

• An Orchid growing as an epiphyte on a mango tree gets shelter and nutrition from the mango tree, while the mango tree is neither benefited nor harmed.
• Barnacles growing on the back of whales get benefitted to move to different locations for food as well as shelter, while the whales are neither benefited nor harmed.
• Egrets always forage close to where the cattle are grazing. Because, the cattle egrets are benefited by the cattle to detect insects as the cattle stir up the bushes and insects are flushed out from the vegetation to be catched by cattle egrets.
• Sea anemone has stinging tentacles and the clown fish lives among them. The fish gets protection from predators, which stay away from the stinging tentacles. The anemone does not appear to derive any benefit by hosting the clown fish.