NEET BIOLOGY

Detailed explanation-1: -Co-extinction is a term that refers to the extinction of a parasite along with the extinction of its specific host. For example when a particular species of fish is extinct then all the parasites that are associated with it in an obligatory manner also become extinct.

Detailed explanation-2: -So, the correct answer is ‘co-extinction.

Detailed explanation-3: -When a host fish species becomes extinct, its unique assemblage of parasites also meets the same fate. Another example is the case of a coevolved plant-pollinator mutualism wherein the extinction of one species invariably leads to the extinction of the other. This phenomenon is called co-extinction. Q.

Detailed explanation-4: -Solution : Extinction of one species automatically causes extinction of the other species in certain obligatory mutualistic relationships. This is called co-extinction, e.g., mutualism between Pronuba yuccasella and Yucca.

Detailed explanation-5: -Habitat loss is the primary cause of higher extinction rates. Other causes include habitat changes, over-exploitation of wildlife for commercial purposes, the introduction of harmful nonnative species, pollution, and the spread of diseases.