Protostomes that have bilateral symmetry and three embryonic germ layers, but that do not possess a coelom or pseudocoelom, are calledMultiple choice question.echinoderms.flatworms.nematodes.cnidarians.

Animals with deuterostome development, bilateral symmetry as larvae, and five-part radial symmetry as adults are calledMultiple choice question.sponges.echinoderms.mollusks.cnidarians.

ParazoaGroup of answer choicesare pseudocoelomates.exhibit bilateral symmetry.exhibit primitive segmentation.include Cnidaria and Ctenophora.have no true tissues.

Which animal is pseudocoelomate?Group of answer choicesAscaris (Nematoda)Mytilus (Mollusca)Lumbricus (Annelida)Planaria (Platyhelminthes)

Protostomes are animals in which the embryonic blastopore becomes theMultiple choice question.anusmesodermmouthectoderm

The three germ layers of triploblastic animals are, starting with the deepest layer, areMultiple choice question.acoeomate, pseudocoleomate, coleomate.ectoderm, mesoderm, endoderm.coleomate, pseudocoleomate, acoleomate.endoderm, mesoderm, ectoderm.