Name: 
 

Chapter 32



Multiple Choice
Identify the letter of the choice that best completes the statement or answers the question.
 

 1. 

Which of the following terms or structures is not associated with animals?
a.
eukaryotic
b.
cell wall
c.
desmosome
d.
zygote
e.
blastula
 

 2. 

Both animals and fungi are heterotrophic. What distinguishes animal heterotrophy from fungal heterotrophy is that only animals derive their nutrition
a.
from organic matter.
b.
by preying on animals.
c.
by ingesting it.
d.
by consuming living, rather than dead, prey.
e.
by using enzymes to digest their food.
 

 3. 

What is the correct sequence of the following four events during an animal's development?

1.
gastrulation
2.
metamorphosis
3.
fertilization
4.
cleavage
a.
4, 3, 2, 1
b.
4, 3, 1, 2
c.
3, 2, 4, 1
d.
3, 4, 2, 1
e.
3, 4, 1, 2
 

 4. 

What should animals as diverse as corals and monkeys have in common?
a.
body cavity between body wall and digestive system
b.
number of embryonic tissue layers
c.
type of body symmetry
d.
presence of Hox genes
e.
degree of cephalization
 

 5. 

Which statement is most consistent with the hypothesis that the Cambrian explosion was caused by the rise of predator-prey relationships?
a.
increased incidence of worm burrows in the fossil record
b.
increased incidence of larger animals in the fossil record
c.
increased incidence of organic material in the fossil record
d.
increased incidence of fern galls in the fossil record
e.
increased incidence of hard parts in the fossil record
 

 6. 

Organisms showing radial symmetry would likely
a.
be good swimmers.
b.
have rapid escape behavior.
c.
move from place to place relatively slowly, if at all.
d.
be able to fly.
e.
have many fins.
 

 7. 

Cephalization is primarily associated with
a.
adaptation to dark environments.
b.
method of reproduction.
c.
fate of the blastopore.
d.
type of digestive system.
e.
bilateral symmetry.
 

 8. 

You are trying to identify an organism. It is an animal, but it does not have nerve or muscle tissue. It is neither diploblastic nor triploblastic. It is probably a
a.
flatworm.
b.
jelly.
c.
comb jelly.
d.
sponge.
e.
nematode.
 
 
The figure below shows a chart of the animal kingdom set up as a modified phylogenetic tree. Use the diagram to answer the following questions.

chpt32_files/i0100000.jpg
 

 9. 

Which group contains diploblastic organisms?
a.
I
b.
II
c.
III
d.
IV
e.
V
 

 10. 

Which group consists of deuterostomes?
a.
I
b.
II
c.
III
d.
IV
e.
V
 

 11. 

Which of these is the basal group of the Eumetazoa?
a.
I
b.
II
c.
III
d.
IV
e.
V
 

 12. 

What distinguishes a coelomate animal from a pseudocoelomate animal is that coelomates
a.
have a body cavity, whereas pseudocoelomates have a solid body.
b.
contain tissues derived from mesoderm, whereas pseudocoelomates have no such tissue.
c.
have a body cavity completely lined by mesodermal tissue, whereas pseudocoelomates do not.
d.
have a complete digestive system with mouth and anus, whereas pseudocoelomates have a digestive tract with only one opening.
e.
have a gut that lacks suspension within the body cavity, whereas pseudocoelomates have mesenteries that hold the digestive system in place.
 

 13. 

Which of the following is descriptive of protostomes?
a.
spiral and indeterminate cleavage, blastopore becomes mouth, schizocoelous development
b.
spiral and determinate cleavage, blastopore becomes mouth, schizocoelous development
c.
spiral and determinate cleavage, blastopore becomes anus, enterocoelous development
d.
radial and determinate cleavage, blastopore becomes anus, enterocoelous development
e.
radial and determinate cleavage, blastopore becomes mouth, schizocoelous development
 

 14. 

The most ancient branch point in animal phylogeny is that between having
a.
radial or bilateral symmetry.
b.
a well-defined head or no head.
c.
diploblastic or triploblastic embryos.
d.
true tissues or no tissues.
e.
a body cavity or no body cavity.
 

 15. 

What kind of data should probably have the greatest impact on animal taxonomy in the coming decades?
a.
fossil evidence
b.
comparative morphology of living species
c.
nucleotide sequences of homologous genes
d.
similarities in metabolic pathways
e.
the number and size of chromosomes within nuclei
 

 16. 

Which of the following statements concerning animal taxonomy is (are) true?

1.
Animals are more closely related to plants than to fungi.
2.
All animal clades based on body plan have been found to be incorrect.
3.
Kingdom Animalia is monophyletic.
4.
Only animals reproduce by sexual means.
5.
Animals are thought to have evolved from flagellated protists similar to modern choanoflagellates.
a.
5
b.
1, 3
c.
2, 4
d.
3, 5
e.
3, 4, 5
 



 
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