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CLICKER QUESTIONS
For CAMPBELL BIOLOGY, NINTH EDITION
Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Chapter 32
An Overview of Animal Diversity
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Questions prepared by
William Wischusen
Louisiana State University
Michael Dini
Texas Tech University
© 2011 Pearson Education, Inc.
You discover a new organism, a multicellular
eukaryote that is heterotrophic. Discuss how to
best classify this organism.
© 2011 Pearson Education, Inc.
Land animals could be considered to have
been common before the time of the
a) Cambrian explosion.
b) Cenozoic era.
c) Ediacaran biota.
d) Neoproterozoic era.
© 2011 Pearson Education, Inc.
What should animals with radial symmetry be
better able to do than those with bilateral
symmetry?
a) move quickly in one direction
b) detect threats from above or below equally well
c) deal effectively with food distributed homogeneously
in 360°
d) focused attention in a single direction
© 2011 Pearson Education, Inc.
Bilateral symmetry is LEAST associated with
a) cephalization.
b) the presence of mesoderm.
c) an active lifestyle.
d) a nervous system with sensory structures
concentrated at one end of the animal.
e) the sessile condition.
© 2011 Pearson Education, Inc.
What is true of modern animal phylogenies?
a) They take no account of an animal’s “body plan.”
b) They portray an animal’s place on the scale of
nature (scala naturae).
c) They rely solely on molecular (genetic) data.
d) They are hypothetical.
e) They are immune from error due to homoplasy.
© 2011 Pearson Education, Inc.
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