EVERYDAY SCIENCE

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.

Detailed explanation-2: -In parasitism, one species (the parasite) lives with, on, or in a host species, at the expense of the host species. Unlike in predation, the host is not immediately killed by the parasite, though it may sicken and die over time. Examples of common parasites found in the ocean include nematodes, leeches, and barnacles.

Detailed explanation-3: -A parasite is an organism that lives at the expense of another organism-the host. In general, parasites share the following features: Parasites are usually smaller than their host. Parasites use both invertebrate and vertebrate hosts.

Detailed explanation-4: -A parasite is an organism that lives in or on another species (its host) and benefits by deriving nutrients at the other’s expense, resulting in the death of the host. A parasitoid is an insect whose larvae live as parasites that eventually kill their hosts (typically other insects).

Detailed explanation-5: -A parasitic relationship is one in which one organism, the parasite, lives off of another organism, the host, harming it and possibly causing death. The parasite lives on or in the body of the host. A few examples of parasites are tapeworms, fleas, and barnacles.