what are parasitic animals ? for class 5
Answers
Parasitism is a symbiotic relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life.[1] The entomologist E. O. Wilson has characterised parasites as "predators that eat prey in units of less than one".[2] Parasites include single-celled protozoans such as the agents of malaria, sleeping sickness, and amoebic dysentery; animals such as hookworms, lice, mosquitoes, and vampire bats; fungi such as honey fungus and the agents of ringworm; and plants such as mistletoe, dodder, and the broomrapes. There are six major parasitic strategies of exploitation of animal hosts, namely parasitic castration, directly transmitted parasitism (by contact), trophically transmitted parasitism (by being eaten), vector-transmitted parasitism, parasitoidism, and micropredation. They are like insects.
Answer:
A parasite is a plant or an animal that lives on, or with, or inside a larger species extracting nutrients. In some cases, the parasite can harm the host and in other situations, it is completely harmless.
Ex : Endoparasites. These can be categorized into three groups; cestodes, nematodes and trematodes. Leishmania - L. tropica, L. donovani, and L. mexicana are known to cause Leishmaniasis.
Ectoparasites. Monogeneans are flatworms, generally ectoparasites on fish . Pseudorhabdosynochus spp.
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