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| 1.
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While on a picnic, you avoid an insect with yellow and black stripes. Later, you discover the insect was a harmless fly. What self-defense does this fly use?
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| | A) | mimicry |
| | B) | poisonous sting |
| | C) | foul odor |
| | D) | camouflage |
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| 2.
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Swimmerets help some crustaceans, like crabs, take in dissolved oxygen by forcing the water over __________.
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| | A) | feathery gills |
| | B) | moist skin |
| | C) | book lungs |
| | D) | spiracles |
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| 3.
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What do millipedes feed on?
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| | A) | soil |
| | B) | plants and decaying material |
| | C) | blood |
| | D) | snails and slugs |
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| 4.
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How are arthropods like annelids?
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| | A) | Both have jointed appendages. |
| | B) | Both have segmented bodies. |
| | C) | Both have setae. |
| | D) | Both have an exoskeleton. |
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| 5.
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What special feature does a cephalopd use to move quickly?
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| | A) | a muscular foot |
| | B) | creeping on tentacles |
| | C) | a jet of water |
| | D) | rapid movement of its shell |
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| 6.
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One reason segmented worms are important to humans is because some of them __________.
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| | A) | destroy mollusks |
| | B) | condition and aerate the soil |
| | C) | pollinate crops |
| | D) | drill holes in submerged wood |
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| 7.
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What are the stages of development in complete metamorphosis?
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| | A) | egg, worm, adult |
| | B) | egg, nymph, and adult |
| | C) | egg, birth, larva, insect |
| | D) | egg, larvae, pupa, and adult |
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| 8.
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What does the word annelid mean?
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| | A) | head-footed |
| | B) | spiny skin |
| | C) | little rings |
| | D) | jointed foot |
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| 9.
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Which one of the following is an example of an arachnid?
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| | A) | crab |
| | B) | scorpion |
| | C) | grasshopper |
| | D) | bee |
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| 10.
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Scientists hypothesize that __________ are the invertebrate group that most closely resembles animals with backbones.
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| | A) | echinoderms |
| | B) | segmented worms |
| | C) | arthropods |
| | D) | mollusks |
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| 11.
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Which one of these animal groups is radially symmetrical?
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| | A) | segmented worms |
| | B) | echinoderms |
| | C) | arthropods |
| | D) | mollusks |
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| 12.
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Earthworms are hermaphrodites. This means that they produce ___________.
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| | A) | neither sperm nor eggs |
| | B) | sperm and eggs in the same body |
| | C) | only eggs |
| | D) | only sperm |
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| 13.
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A(n) __________ is an example of an organism from the most specialized and complex mollusk group.
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| | A) | slug |
| | B) | clam |
| | C) | squid |
| | D) | oyster |
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| 14.
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Which one of the following is a thin layer of tissue in mollusks that often secretes a shell?
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| | A) | mantle |
| | B) | gizzard |
| | C) | radula |
| | D) | exoskeleton |
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| 15.
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At the ocean, you find an organism that is covered with stiff, hairlike spines. Which one of the following is it likely to be?
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| | A) | sea urchin |
| | B) | brittle star |
| | C) | sea cucumber |
| | D) | sand dollar |
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| 16.
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Because bivalves are __________, bacteria and other harmful organisms often become trapped in clams and oysters.
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| | A) | head-footed |
| | B) | soft bodied |
| | C) | parasites |
| | D) | filter feeders |
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| 17.
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An arthropod's old exoskeleton is shed and replaced by a new one in a process called __________.
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| | A) | mimicry |
| | B) | metamorphosis |
| | C) | digestion |
| | D) | molting |
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| 18.
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What annelid worm has a sucker at each end of its body?
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| | A) | an earthworm |
| | B) | a leech |
| | C) | a bristleworm |
| | D) | a polychaete |
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| 19.
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Crabs and water fleas are examples of __________.
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| | A) | arachnids |
| | B) | centipedes |
| | C) | crustaceans |
| | D) | insects |
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| 20.
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Which group of mollusks often has eyes on the tips of tentacles and uses a radula to obtain food?
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| | A) | cephalopods |
| | B) | gastropods |
| | C) | bivalves |
| | D) | arachnids |
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