Ecosystems · Botany

An 'ectoparasite' is an organism that lives on which part of its host?

  1. Inside the bloodstream
  2. Within the digestive tract
  3. On the external surface
  4. In the muscle tissue
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Correct answer: On the external surface

Ectoparasites, such as ticks, lice, and leeches, live and feed on the outside of their host. Endoparasites, by contrast, live inside the host's body.

Difficulty: Medium Question 16 of 20

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