Match the Column I with Column II :

A-2,B-1,C-3,D-4

The correct answer is Option (4)- A-2, B-1,C-3, D-4

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.

A. Epiphytes - 2. Orchid on mango tree:  Epiphytes are plants that grow on other plants without harming them. Orchids are a common example of epiphytes, and they often grow on trees like mango trees.

B. Grazing cattle - 1. Cattle egret: Grazing cattle refers to cattle that feed on vegetation in a pasture or grassland. Cattle egrets are commonly seen around grazing cattle, as they feed on insects and parasites that are disturbed by the cattle's movements.

C. Sea anemone - 3. Clown fish:  It is the interaction between sea anemone that has stinging tentacles and the clown fish that 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.

D. Lice - 4. Ectoparasites:  Lice are external parasites that live on the bodies of mammals or birds. They rely on their hosts for food and survival. As an ectoparasite, lice are found on the external surface of the host's body rather than living inside it.