Parasitology Terms Exam Practice with Complete Solutions

Parasitology Terms Exam Practice with Complete Solutions Parasitology - CORRECT ️️ The science or study of parasitism Symbiosis - CORRECT ️️ An interaction between two organisms of different species, in which one organism (symbiont) lives with, on, or in the body of the other (the host). Implies no mutual or unilateral benefit or physiologic dependency Commensalism - CORRECT ️️ A kind of symbiosis in which one symbiont (the commensal) is benefited, while the other (the host) is neither helped nor harmed by association Mutualism - CORRECT ️️ a kind of symbiosis in which both symbionts (mutualist and host) benefit from the association Parasitism - CORRECT ️️ A kind of symbiosis in which one symbiont (the parasite) benefits from the association while the other (the host) is harmed in some way Phoresis - CORRECT ️️ a kind of symbiosis in which one symbiont (the phoront) is mechanically carried about by its host. No physiologic dependency occurs Parasite - CORRECT ️️ An organism that lives at least part of its life cycle on or within another organism (the host) upon which it is physiologically dependent and to which it causes harm in some way. In a parasitologic or medical context, it is restricted to animal agents i.e. protozoa, helminths, and arthropods Ectoparasite - CORRECT ️️ A parasite that lives on the body surface of the host (=infestation) Endoparasite - CORRECT ️️ A parasite that lives within the body of the host (= infection) Obligate or Obligatory Parasite - CORRECT ️️ A parasite that is completely dependent on a host for its existence during part or all of its life cycle Facultative parasite - CORRECT ️️ A normally free-living or commensal organism that can become parasitic if the opportunity presents itself. It is not physiologically dependent on doing so