NEET BIOLOGY

Detailed explanation-1: -The correct answer is – 3. Commensalism.

Detailed explanation-2: -Orchids show a symbiotic relationship with trees in which they get their nutrition from them. This is a healthy relationship in which no harm is done to the trees and there is no benefit to trees from Orchids. Such a type of symbiotic relationship is called Commensalism.

Detailed explanation-3: -Commensalism means one organism benefits and the other organism is not affected by the partnership. In this relationship, the orchid benefits by this association by obtaining food and water from the mango tree, while the mango tree is not affected by this relationship, therefore this association is commensalism.

Detailed explanation-4: -Orchids are epiphytes (plants that grow on other plants). They grow high in the canopy of rainforests on the branches of trees. The orchids benefit in several ways. They get more sunlight and are more easily visited by the moths which pollinate them.

Detailed explanation-5: -All of the physiological evidence from orchids says that they are not mutualistic with their fungal associates (21).