The phylum Cycliophora was discovered in 1995. They are 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 saclike and has a U-shaped intestine that brings the anus close to the mouth. Cycliophorans are coelomates, do not moult (though their host does), and their embryos undergo spiral cleavage.
-Basing your inferences on information in the paragraph, to which clades should cycliophorans belong?
A) Eumetazoa and Bilateria
B) Eumetazoa and Lophotrochozoa
C) Deuterostomia and Ecdysozoa
D) Deuterostomia and Lophotrochozoa

Question

Quizplus · Accepted Answer

Cycliophorans are eumetazoans since they possess true tissues and organs. They are also bilaterians as they have bilateral symmetry. Additionally, they belong to the group Lophotrochozoa because they have a feeding stage that uses a ring of cilia to capture food from its host, which is a characteristic of this clade.

The Phylum Cycliophora Was Discovered in 1995