A worm attached to the bottom of a whale grows on the

Last updated: 8/7/2022

A worm attached to the bottom of a whale grows on the whale, sucking its blood, and occasionally reproducing by releasing eggs into its bloodstream where they are fertilized by worm sperm. The zygotes then make a small, nonlethal hole into the digestive system, where they exit the anus of the whale. This is an example of: A. vitalism B. mutualism C. parasitism D. commensalism