Matching. Choose the most appropriate answer for
each.
1. ___ millipede
2. ___ annelids
3. ___ arthropods
4. ___ placozoan
5. ___ cnidarians
6. ___ echinoderms
7. ___ flatworms
8. ___ rotifers
9. ___ mollusks
10. ___ roundworms
11. ___ sponges
A. two pairs of legs per segment
B. tiny, flattened, crawling forms
C. planarians, flukes, tapeworms
D. nematodes
E. snails, squids, clams
F. wheel animals
G. flagellated collar cells present
H. jellyfish and corals
I. crustaceans, ticks, and insects
J. polychaetes, earthworms, leeches
K. sea urchins, sea stars
Answers: 1. A, 2. J, 3. I, 4. B, 5. H, 6. K, 7. C, 8. F, 9. E, 10. D,
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