SCIENCE
VIRUS AND BACTERIA
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
An organism that feeds on a living host.
|
|
|
An organism that supports a host.
|
|
|
None of these.
|
|
|
None of the above
|
Detailed explanation-1: -A parasite is an organism that lives on or in a host organism and gets its food from or at the expense of its host. There are three main classes of parasites that can cause disease in humans: protozoa, helminths, and ectoparasites. Protozoa. Entamoeba histolytica is a protozoan.
Detailed explanation-2: -A parasite is a parasitic organism that lives inside or on its host. It feeds on the host’s food and nutrients. The host is harmed by parasites. Examples of parasites are, lice, Cuscuta, plasmodium.
Detailed explanation-3: -A parasite is an organism that lives at the expense of another organism-the host.
Detailed explanation-4: -The correct option is D endoparasites. Parasites like tapeworm and roundworm live inside the internal organs or tissues of their hosts and derive nutrition from them. Such parasites are called as endoparasites.
Detailed explanation-5: -A few examples of parasites are tapeworms, fleas, and barnacles. Tapeworms are segmented flatworms that attach themselves to the insides of the intestines of animals such as cows, pigs, and humans. They get food by eating the host’s partly digested food, depriving the host of nutrients.