Classification of Parasites and Host

• Parasite: an organism that lives on or in a host organism and gets its food from or at the expense of its host.
• What are the 3 main classes of parasites?

  Protozoans, Ectoparasites, and Metozoans
• Under which class does helminths or worms belong to?

  Metozoans
• What class includes unicellular organisms?

  Protozoans
• Under what class does arthropods belong to?

  Ectoparasites
• Host: a human or an animal where the parasite lives or gets is nutrients and food from