NEET BIOLOGY

Detailed explanation-1: -Commensalism is a relationship which is beneficial to one organism and the other is unaffected. Barnacles growing on the back of a whale, gets protection and more access to food due to its relationship with the whale, while the whale is unaffected by this relationship therefore this relationship is commensalism.

Detailed explanation-2: -Mutualism is the positive interaction in which two organisms live close together and benefit each other equally such as mycorrhiza, plant and animal relation for pollination and lichens.

Detailed explanation-3: -The partnership between nitrogen-fixing bacteria and leguminous plants is one example. In addition, cows possess rumen bacteria that live in the digestive tract and help digest the plants the cow consumes. Associations between tree roots and certain fungi are often mutualistic (see mycorrhiza).