Ectosymbiosis, also referred to as exosymbiosis, is any symbiotic relationship in which the symbiont lives on the body surface of the host, including the inner surface of the digestive tract or the ducts of exocrine glands. Examples of this include ectoparasites such as lice, commensal ectosymbionts such as the barnacles that attach themselves to the jaw of baleen whales, and mutualist ectosymbionts such as cleaner fish. COUNT 3
QSN1 What organisms are described as living on the surface of whales? ANS1 barnacles QSN2 Name a parasitic ectosymbiont. ANS2 lice QSN3 What is another name for ectosymbiosis? ANS3 exosymbiosis