Honors Molecular Biology
Chapter 22 Test Review
1. Describe the major characteristics of all animals.
2. Which are the most and least diverse phyla? Which are most prevalent on earth?
3.
What is a cladogram? How are cladograms useful for classification of animals?
4. What are the major differences between protostomes and deuterostomes?
5. Describe the difference between filter feeding, internal digestion and external digestion. Identify
which invertebrates use which of these mechanisms.
6. List the 8 invertebrate phyla and give examples of each (use ones we saw in class).
7. Describe the three major subphyla of Arthropods, tell what distinguishes them from each other
and give examples of each (seen in class)
8. What are characteristics of all chordates?
9. Be able to recognize the relationship between animal phyla, subphyla (if appropriate) and
classes.
10. Describe characteristics of the 5 major groups of vertebrates and give examples of each (use
ones seen in class). For fish identify the 3 groups focused on in the classroom.
11. Animals must maintain their body temperatures in order to survive. Some are exothermic and
others are endothermic. What does this mean and tell which classes are included in each.
12. Which invertebrate phylum or phyla (some questions require more than one answer)
 have radial symmetry? bilateral
symmetry?
 are deuterostomes?
 are protostomes?
 are neither protostome or
deuterostome?
 reproduce asexually?
 have two way digestion?
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have one way digestion?
have jointed appendages?
have body segmentation?
have an exoskeleton?
have no body tissues?
have a true coelom?
Pseudocoelom? Aceolomates?
13. What is the advantage of having a coelom? In what ways does not having a coelom restrict some
animals?
14. Bilateral symmetry and jointed appendages are seen in the more complex animals. What
advantage do these characteristics give to those animals?
15. What characteristics are used to distinguish classes of chordates?
16. What is regeneration? Why is the planaria able to regenerate? What other invertebrate(s) have
regeneration?