Which of the following is an example of commensalism?

A. acacia trees and their ants
B. barnacles hitching a ride on the skin of a whale
C. wood-digesting flagellates living in the gut of termites 
D. a tapeworm living in the intestines of a mule deer
E. a female mosquito sucking blood from a musk oxen


Answer: B

Biology & Microbiology

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