Which of the following are actual mutualistic partnerships that involve a protist and a host organism?
A) cellulose-digesting gut protists-wood-eating termites
B) dinoflagellates-reef-building coral animals
C) Trichomonas-humans
D) algae-certain foraminiferans
E) all except that involving humans

Question

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A, B, and D describe mutualistic relationships involving protists. In these partnerships, both the protist and the host organism benefit from the relationship. For example, cellulose-digesting gut protists help wood-eating termites digest wood, dinoflagellates provide reef-building coral animals with nutrients through photosynthesis, and certain algae live in a mutualistic relationship with foraminiferans, providing them with energy through photosynthesis. Trichomonas and humans (C) do not have a mutualistic relationship; Trichomonas vaginalis is a pathogen in humans.

Which of the Following Are Actual Mutualistic Partnerships That Involve