Parasites that live on the external surface of a host are called:

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Multiple Choice

Parasites that live on the external surface of a host are called:

Explanation:
Parasites on the outer surface of a host are called ectoparasites. They live on the skin, fur, feathers, or other exterior surfaces and often feed on blood, skin secretions, or surface tissues. This distinguishes them from endoparasites, which inhabit internal parts of the host such as the gut or tissues. A term sometimes used for parasites that are partly embedded or associated with internal tissues is mesoparasite, but that still involves internal association rather than living solely on the exterior. Hyperparasites are parasites of other parasites, not of the host itself. So the external, surface-dwelling group is ectoparasites.

Parasites on the outer surface of a host are called ectoparasites. They live on the skin, fur, feathers, or other exterior surfaces and often feed on blood, skin secretions, or surface tissues. This distinguishes them from endoparasites, which inhabit internal parts of the host such as the gut or tissues. A term sometimes used for parasites that are partly embedded or associated with internal tissues is mesoparasite, but that still involves internal association rather than living solely on the exterior. Hyperparasites are parasites of other parasites, not of the host itself. So the external, surface-dwelling group is ectoparasites.

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