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Practice Exam 3
Below are sample questions from your book (of which all of the answers are in the back). These
are not necessarily indicative of the specific material or types of questions that Drs. Hofmockel
& Serb will ask on the exam. Remember, they want you to be able to apply your knowledge of
the material learned in class and from the book and part of that comes from understanding the
significance, application, and importance of that information. The majority of questions will
come from the learning objectives so focus on those more than anything else! Good luck!
Text Chapters Covered:
 Ch. 32- An Introduction to Animal Diversity
 Ch. 33- The Invertebrates
 Ch. 34- The Vertebrates
Learning Objectives:
Know the defining characteristics of the Kingdom Animalia
Understand the importance of embryonic development
Compare and contrast different groups of animals
Define the characteristics of the 3 lophotrochozoan lineages
Describe a general parasitic life cycle; what makes an organism an effective parasite?
Be able to read parasitic life cycle figures
Define the characteristics of the Lophotrochozoan lineages (annelida, mollusca)
Compare and contrast the 2 main worm phyla (Annelida vs. Platyhelminthes)
5 main components of mollusca body plan
Compare/contrast Mollusca subgroups
*Missing Learning Objectives from Porifera, Ecdysozoa, and Vertebrates.
1. Bilateral symmetry is strongly correlated with
a. the ability to move through the environment
b. cephalization
c. the ability to detect prey
d. a and b
e. a, b, and c
2. In triploblastic animals, the inner lining of the digestive tract is derived from
a. the ectoderm
b. the mesoderm
c. the endoderm
d. the pseudocoelom
e. the coelom
3. Pseudocoelomates
a. lack a fluid-filled cavity
b. have a fluid-filled cavity that is completely lined with mesoderm
c. have a fluid-filled cavity that is partially lined with mesoderm
d. have a fluid-filled cavity that is not lined with mesoderm
e. have an air-filled cavity that is partially lined with mesoderm
4. Protostomes and deuterostomes can be classified based on
a. cleavage pattern
b. destiny of the blastopore
c. whether the fate of the embryonic cells is fixed early during development
d. how the coelom is formed
e. all of the above
5. Choanocytes are
a. a group of protists that are believed to have given rise to animals
b. specialized cells of sponges that function to trap and eat small particles
c. cells that make up the gelatinous layer in sponges
d. cells of sponges that function to transfer nutrients to other cells
e. cells that form spicules in sponges
6. Which phylum does not have at least some members with a closed circulatory system?
a. Lophophorata
b. Arthropoda
c. Annelida
d. Mollusca
e. All of the above phyla have some members with a closed circulatory system
7. A defining feature of the Ecdysozoa is
a. a segmented body
b. a closed circulatory system
c. a cuticle
d. a complete gut
e. a lophophore
8. Which of the following is not a defining characteristic of craniates?
a. cranium
b. neural crest
c. two clusters of Hox genes
d. protective housing around the brain
e. cephalization
9. Which clade does not include frogs?
a. craniates
b. gnathostomes
c. tetrapods
d. amniotes
e. lobe fins
10. Which characteristic qualifies lizards as gnathostomes?
a. a cranium
b. a skeleton of bone or cartilage
c. a hinged jaw
d. the possession of limbs
e. amniotic eggs