Exam 31: Sponges, Cnidarians, Ctenophores, and Protostomes

MATCHING Match the organism or its characteristic with the correct phylum. a.Annelida f.Nematoda b.Arthropoda g.Nemertea c.Cnidaria H.Platyhelminthes d.Ctenophora I.Porifera e.Mollusca J.Rotifera -spiders

In cnidarians, nematocysts are housed in specialized cells called:

Hundreds or thousands of individuals of certain __________ form colonies in which each polyp has a special function such as feeding, reproduction, or defensE.

MATCHING Match the organism or its characteristic with the correct phylum. a.Annelida f.Nematoda b.Arthropoda g.Nemertea c.Cnidaria H.Platyhelminthes d.Ctenophora I.Porifera e.Mollusca J.Rotifera -insects

MATCHING Match the organism or its characteristic with the correct phylum. a.Annelida f.Nematoda b.Arthropoda g.Nemertea c.Cnidaria H.Platyhelminthes d.Ctenophora I.Porifera e.Mollusca J.Rotifera -have a mantle

Figure 31-6 Use the figure to answer the corresponding question(s). -__________ superficially resemble bivalves.

Members of the lophotrochozoa are diploblastic. ____________________

From an evolutionary perspective, true nerve cells are first seen in the phylum:

Diagram the life cycle for a blood fluke and identify all of the stages that the fluke goes through.Compare and contrast this life cycle to that of a beef tapeworm.

Members of phylum Arthropoda have paired, jointed appendages. ____________________

Members of the subphylum __________ lack antenna but possess unique mouthparts, which are not mandibles.

Which of the following is a shell-less mollusk?

Which of the following statements about the first animals to show cephalization is false?

Cephalopods have an open circulatory system. ____________________

Figure 31-5 Use the figure to answer the corresponding question(s). -Refer to Figure 31-5.What is the function of the structure labeled 5?

Members of phylum Nemertea have a tube-with-a-tube body plan. ____________________

Figure 31-7 Use the figure to answer the corresponding question(s). -Which of the insects in Figure 31-7 is a flea?

Figure 31-4 Use the figure to answer the corresponding question(s). -Annelids:

Figure 31-5 Use the figure to answer the corresponding question(s). -Refer to Figure 31-5.Which number has been placed on the dorsal surface?

Which of the following does not characterize arthropods?