Georgia Science Grade 7

Chapter 13: Mollusks, Worms, Arthropods, Echinoderms

Section 4 Self-Check Quiz-Eng.

1
Which of the following groups would you expect to have the best-preserved fossils?
A)earthworms
B)slugs
C)insects
D)leeches
2
Which one of these animal groups is radially symmetrical?
A)arthropods
B)echinoderms
C)segmented worms
D)mollusks
3
Sea stars move by using their __________.
A)jointed appendages
B)muscular foot
C)tube feet
D)tentacles
4
At the ocean, you find an organism that is covered with stiff, hairlike spines. Which one of the following is it likely to be?
A)sea urchin
B)sea cucumber
C)brittle star
D)sand dollar
5
Scientists hypothesize that __________ are the invertebrate group that most closely resembles animals with backbones.
A)arthropods
B)mollusks
C)echinoderms
D)segmented worms
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