Glencoe Biology

Section 2: Animal Body Plans

Self-Check Quizzes

1.
The similarity or balance among body structures is called ____.
A)symmetry
B)cephalization
C)the evolutionary tree
D)ectoderm
2.
This hummingbird has what kind of body design?

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A)mesodermic symmetry
B)asymmetry
C)radial symmetry
D)bilateral symmetry
3.
How do scientists mark the branching points of animal evolution?
A)habitat changes
B)anatomical features
C)population growth
D)eating habits
4.
Why is the flatworm considered an acoelomate?
A)has no endoderm
B)has multiple body cavities
C)has no ectoderm
D)lacks a body cavity
5.
In protostomes, the ____ develops from the opening in the gastrula.
A)nervous system
B)anus
C)mouth
D)tail
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