The members of the ____ Cnidarian lineage exist only as polyps as adults, and most build calcium carbonate exoskeletons and have mutualistic relationships with photosynthetic protists.

Question

Quizplus · Accepted Answer

The correct answer is Anthozoa. Members of the Anthozoa class, which includes corals and sea anemones, exist only as polyps in their adult form. Many of these organisms build calcium carbonate exoskeletons and engage in mutualistic relationships with photosynthetic protists, such as zooxanthellae, which live within their tissues and provide them with nutrients through photosynthesis.

The Members of the ____ Cnidarian Lineage Exist Only as Polyps