Definition of Parasites

  definition of parasites Definition of Parasites: What Is Parasitism? Published by Bongani Mthombeni Parasites have existed for millions of years and affect humans, animals, and plants around the world. Understanding what parasites are is the first step toward learning how to prevent and manage parasitic infections. What Is a Parasite? A parasite is an organism that lives on or inside another living organism, known as the host , and obtains nutrients or other resources from the host. In most cases, the parasite benefits while the host is harmed. This biological relationship is called parasitism . Unlike predators, parasites usually do not kill their hosts immediately. Instead, they often live in or on the host for extended periods while feeding, growing, and reproducing. Types of Parasites Parasites come in many different forms, including: Protozoa – Single-celled organisms such as Plasmodium , which causes malaria, and Giardia , which can cause intestinal infections. ...