Question

explain parasitism and co-evolution with the help of one example of each​

Answer 1

Answer:

Parasitism :

it is the interaction where one species (parasite) depends on the other species (host) for food and shelter. Many parasites have evolved to be host specific in such a way that both host and parasite tends to co-evolve, that is if the host evolve special mechanisms for rejecting the parasite, the parasite has to evolve mechanism to counteract and neutralize them in order to be successful with the same host species.

Types of parasite:

1. Ectoparasite : Depends on external surface of host. e.g., ticks on dogs, head lice on human etc.
2. Endoparasite : Take shelter within the body of the host organism. e.g., Liverflukes, plasmodium etc.

Co-evolution :

It is used to describe cases where two or more species reciprocally affect each others evolution. It is complex process that occur in many levels. It may appear in situations where one species interact closely with several others, such as interaction between European Cukoos and the other species whose nests they parasite.