👉 Parasitism is a biological phenomenon where an organism that possesses a parasite (a living creature that consumes another) gains immunity to the host's own immune system. Parasites are usually harmful or destructive, while their hosts provide them with nutrients and other resources. In this context, "parasitize" refers to the process by which an organism gains immunity to its own species. This is a common phenomenon in which an animal or plant gains a protective effect over another organism that it has interacted