The Most Recently Discovered Phylum in the Animal Kingdom (1995)

question 56

Multiple Choice

The most recently discovered phylum in the animal kingdom (1995) is the phylum Cycliophora. It includes three species of tiny organisms that live in large numbers on the outsides of the mouthparts and appendages of lobsters. The feeding stage permanently attaches to the lobster via an adhesive disk, and collects scraps of food from its host's feeding by capturing the scraps in a current created by a ring of cilia. The body is sac-like and has a U-shaped intestine that brings the anus close to the mouth. Cycliophorans are eucoelomate, do not molt (though their host does) , and their embryos undergo spiral cleavage.
-Which of these, if discovered among cycliophorans, would cause the most confusion concerning our current understanding of cycliophoran taxonomy?

• A) if the ciliated feeding ring is a lophophore
• B) if embryos are diploblastic
• C) if the body cavity is actually a pseudocoelom
• D) if the organisms show little apparent cephalization

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Decertification

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