Multiple Choice
The relationship between the protistan zooxanthellae and the polyps of reef-building corals is best described as a/an:
A) facultative ectoparasitism.
B) facultative commensalism.
C) obligate endoparasitism.
D) mutualistic symbiosis.
E) obligate commensalism.
Correct Answer:

Verified
Correct Answer:
Verified
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