Biology: The Dynamics of Life, California Edition

Chapter 26: Sponges, Cnidarians, Flatworms, and Roundworms

Sponges, Cnidarians, Flatworms, and Roundworms

1.
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Which structure shown in Figure 26-2 is analogous to an anus?
A)D
B)A
C)C
D)B
2.
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Which organism shown in Figure 26-4 is a parasite that requires two hosts?
A)A
B)B
C)C
D)D
3.
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Which organism shown in Figure 26-4 is of a phylum that can infect plants?
A)C
B)A
C)B
D)D
4.
Uncooked or undercooked pork may contain _____.
A)hookworms
B)Trichinella worms
C)free-living roundworms
D)pinworms
5.
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In Figure 26-2, how did the structure labeled A develop?
A)formation of gametes
B)asexually by budding
C)fertilization by sperm
D)fragmentation
6.
In a cnidarian, digestion occurs in the _____.
A)proglottids
B)gastrovascular cavity
C)tentacles
D)digestive tract
7.
The collar cells of sponges are similar to _____.
A)ciliated paramecia
B)sessile sporozoans
C)flagellated protists
D)amoebas
8.
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Which of the two organisms shown in Figure 26-3 releases gametes?
A)A
B)neither
C)B
D)both
9.
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How are the two organisms shown in Figure 26-3 different?
A)A is a cnidarian and B is not
B)A moves but B doesn’t
C)only B is poisonous
D)A is a medusa and B is a polyp colony
10.
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Which organism shown in Figure 26-4 does not have hooks and suckers on its mouth?
A)A
B)B
C)C
D)D
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