|
Most roundworms are free-living. Most flatworms are ____.
|
aquatic
|
|
Most reptiles, amphibians, and fish are ____ (cold-blooded).
|
ectothermic
|
|
Corals and sponges are ____ (surface-attached) animals.
|
endothermic
|
|
Manatees, porpoises, seals, and walruses are ____ mammals.
|
feral
|
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Most mammals and birds are ____ (warm-blooded).
|
oviparous
|
|
The ____ (bottom) shell of a turtle is called the plastron.
|
parasitic
|
|
Domesticated animals that have returned to the wild are ____.
|
sessile
|
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Most birds and reptiles are ____ (egg-laying).
|
ventral
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