👉 Endoparasites are organisms that infect and parasitize their host. They take advantage of the host's immune system to attack and kill the organism, usually through a process called endosymbiosis. Endoparasitoids can be found in many different environments, including animals, plants, and microorganisms. In summary, an endoparasite is an organism that infects its host, typically through a process of endosymbiosis or chemical contact, to kill the host. This type