Exam 27: Diversity of Animals 1: Sponges, Radiata, Platyhelminthes, and Protostomes

For most metazoans, what is the name of the outermost tissue layer during development?

Match each phylum with its corresponding organism. Each phylum is used only once. -bristle worms, earthworms, and leeches

For most protostomes, what is the developmental origin of the body cavity between the gut and muscles of the body wall?

Which Ecdysozoan phylum contains animals called roundworms that are so plentiful in soil and other places that they may be the most abundant animals on Earth?

Which term refers to animals that do NOT have a body cavity that separates the gut from the muscles of the body wall?

Which lineage of Cnidarians includes adults that are predominately medusae and the true jellyfishes?

Which phylum includes members that have radial symmetry and nematocysts, and may have polyp or medusa forms (or both) as adults?

Which Ecdysozoan phylum includes insects, spiders, crustaceans, millipedes, and centipedes?

Which flatworms are free living and are found mostly in marine environments?

Consider the ringlike patterns on an earthworm and "six-pack abs" in humans. In an animal's body plan, what are they both evidence of?

Which phylum includes the lineages Polyplacophora, Gastropoda, Bivalvia, and Cephalopoda?

Which phylum includes members with radial symmetry that use their two tentacles to capture prey?

Which phylum contains members that do NOT exhibit true segmentation?

Which class includes members that have a pair of shells which are hinged together?

Match each phylum with its corresponding organism. Each phylum is used only once. -flatworms

Which of the following describes the postembryonic development that members of the order Thysanura (silverfish) have instead of metamorphosis?

Which class includes octopuses, squids, and nautiluses?

Which lineage of Cnidarians exist only as polyps as adults, build calcium carbonate exoskeletons, and have a mutualistic relationship with photosynthetic protists?

Which of the following describes the postembryonic development, called complete metamorphosis, in members of the order Diptera (flies)?

What is the name of the specialized stinging cells that jellyfishes have as part of their epidermis, and which they use to paralyze small prey?