How are parasites classified?

Parasites are classified based on their life cycle, morphology, and relationship with their hosts. They can be broadly categorized into two main groups: protozoa (unicellular organisms) and metazoa (multicellular organisms, including helminths and arthropods). Additionally, parasites are further classified as endoparasites, which live inside the host, or ectoparasites, which live on the outside. This classification helps in understanding their Biology, transmission, and the diseases they cause.