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Most reptiles, amphibians, and fish are ____ (cold-blooded).
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aquatic
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Most birds and reptiles are ____ (egg-laying).
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dorsal
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The ____ (top) shell of a turtle is called the carapace.
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ectothermic
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Most roundworms are free-living. Most flatworms are ____.
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nocturnal
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The ____ (bottom) shell of a turtle is called the plastron.
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oviparous
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Most millipedes secrete ____ substances for defense.
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parasitic
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Owls, bats, and crickets are ____ (active at night).
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poisonous
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Manatees, porpoises, seals, and walruses are ____ mammals.
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ventral
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