Invertebrate Zoology Bio 33404

Study Guide Exam 4


New Material


1. Be able to define the following terms:

2. Distinguish between a protostome and a deuterostome. Use several characteristics including type of cleavage, fate of blastopore, mesoderm formation and coelom formation.

3. What characteristics do all lophophorates have in common?

4. List the 3 lophophorate phyla and state how they differ in overall form (shape, colonial vs sessile), outer coverings, circulatory and excretory systems? Also, give at least one example of each.

5. How do the Entoprocta differ from the lophophorates?

6. What are the unique features of the Phylum Echinodermata?

7. What additional features do all members of the Phylum Echinodermata share?

8. Describe/draw the components of the echinoderm water vascular system.

9. The phylum Echinodermata is divided into 5 classes: Crinoidea, Asteroidea, Ophiuroidea, Echinoidea, and Holothuroidea. Describe how these differ in arms, mouth position, ambulacral region position, spines, pedicellaria and other features. List at least one example (common and scientific name) of each.

10. Distinguish between a feather star and a sea lily.

11. Distinguish between a sea urchin (regular echinoid), sand dollar (irregular echinoid) and sea biscuit (irregular echinoid).

12. Describe the big 3 unique features of a chordate? What other characteristics do all chordates have in common?

13. The phylum Chordata contains 2 subphyla of invertebrates: Cephalochordata and Urochordata. Describe how these differ from each other. Also list at least one example (common and scientific names) of each.

14. The subphylum Urochordata is divided into three classes. List the 3 classes and distinguish between them.

15. What characteristics do all members of the Phylum Hemichordata have in common?

16. Distinguish between the Hemichordata classes Enteropneusta and Pterobranchiata.

17. What are Chaetognatha?

18. The protostome phyla are divided into Lophotrochozoa and Ecdysozoa. Distinguish between these groups and list the phyla in each group.

19. Draw a p hylogenetic tree shoing the relative positions of echinoderms, chordates, hemichordates, arthropods, nematodes, lophophorates, annelids, mollusks, platyhelminthes, entoprocts, cnidaria and porifera.

20. Be able to identify slides, photographs and preserved animals that were seen in lab in terms of name (common and genus), classification (phylum, class), external structures and internal structures where appropriate.

Review Material

1. Distinguish between ectoderm, mesoderm and endoderm.

2. Distinguish between an acoelomate, pseudocoelomate and coelomate. Be able to draw the layers. List the phyla of each.

3. Distinguish between a diploblastic and triploblastic animal.

4. Distinguish between bilateral and radial symmetry.

5. Distinguish between anterior and posterior; dorsal and ventral, oral and aboral.

6. Distinguish between an opened and a closed circulatory system. List the phyla that possess each type. Also list the phyla with no circulatory system for comparison.

7. Distinguish between asexual and sexual reproduction. Also define the following methods of reproduction: fission, budding, hermaphorditism, parthenogenesis. List at least two examples of vertebrates that use each of the methods.

8. List the different types of respiratory mechanisms found in invertebrates. Give at least one example of an invertebrate with each type.

9. List the different types of excretory/salt balance methods found in invertebrates. Give at least one example of an invertebrate with each type.

10. Distinguish between ectoparasites and endoparasites Give several examples of invertebrate organisms with each.

11. Distinguish between filter-feeding and deposit feeding. Give several examples of invertebrate organisms with each.

12. Define evolution and natural selection.

13. Be able to define the following terms in experimental design: hypothesis, manipulated variable, responding variable, treatments, replicates, constants

14. Review the identity of lab specimens from previous units. Know the phyla they belong to. You do not need to know external/internal structure.

 

Last Updated August 23, 2006

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