Many Relatively Large Ectoparasites, Such as Leeches and Mosquitoes, Are

question 228

Multiple Choice

Many relatively large ectoparasites, such as leeches and mosquitoes, are only casually associated with their hosts; that is, they feed and then leave.However, whale lice spend their entire lives on one whale.A difference in _______ has most likely caused the evolution of this difference in ectoparasite life style.

• A) size (lice are smaller than most other ectoparasites)
• B) species (lice have different basic needs than other ectoparasites)
• C) habitat (in the ocean, lice would likely be unable to find a new host)
• D) host behavior (whales are unable to remove lice by grooming)
• E) disease (lice are less likely to cause disease than other ectoparasites)

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