The Relationship Between the Protistan Zooxanthellae and the Polyps of Reef-Building

question 47

Multiple Choice

The relationship between the protistan zooxanthellae and the polyps of reef-building corals is best described as a(n) :

• A) facultative ectoparasitism.
• B) facultative commensalism.
• C) obligate endoparasitism.
• D) obligate mutualistic endosymbiosis.
• E) obligate commensalism.

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