Select the statement which explains best parasitism.

A. One organism is benefited.


B. Both the organisms are benefited.


C. One organism is benefited, other is not affected.


D. One organism is benefited, other is affected.


(d) One organism is benefited, other is affected.

Parasitism is a kind of relationship between two species in


which one derives its food from the other (host). Parasitism also involves shelter,


in addition to food obtained by a parasite. Parasites may be ectoparasites or


endoparasites. Ectoparasites live on the surface of their host while endoparasites


live inside the body of the host.


Examples of Parasitism


(i) Cucuta growing on shoe flower plant


(ii) Head lice and humans


(iii) Ascaris, Taenia, Plasmodium causing diseases in humans


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