A) Hemichordata.
B) Urodela.
C) Cephalochordata.
D) Ophiuroidea.
E) Urochordates.
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Multiple Choice
A) oviparous
B) viviparous
C) ovoviviparous
D) placental
E) eutherial
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Multiple Choice
A) eels; carnivorous.
B) corals; photosynthetic
C) starfish; carnivorous
D) sponges; filter feeders
E) earthworms; detritivores
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Multiple Choice
A) cartilagineous fish
B) ray finned fish
C) lampreys
D) coelacanths
E) lungfish
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True/False
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Multiple Choice
A) Ophiuroidea
B) Echinoidea
C) Asteroidea
D) Concentricycloidea
E) Holothuroidea
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Multiple Choice
A) nocturnal
B) insectivores
C) aquatic
D) placental mammals
E) some weigh less than 5 g
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Multiple Choice
A) possession of a coelom
B) three primary cell layers
C) dorsal tubular nerve cord
D) pharyngeal gill slits
E) vertebrae
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Multiple Choice
A) Chondrichthyes
B) Reptilia
C) Myxiniformes
D) Amphibia
E) Actinistia
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Multiple Choice
A) reptiles.
B) testudines.
C) mammals.
D) labyrinthodonts.
E) terrapins.
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Multiple Choice
A) an endoskeleton.
B) pentaradial symmetry.
C) a water vascular system.
D) pedicellariae present in some classes.
E) small disc-shaped flat bodies.
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Multiple Choice
A) lateral lines.
B) electroreceptors.
C) keen olfaction.
D) sight.
E) dorsal fin.
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Multiple Choice
A) eutherians.
B) lancelets.
C) therapsids.
D) holothurians.
E) labyrinthodonts.
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Essay
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View Answer
Multiple Choice
A) radial; determinate
B) radial; indeterminate
C) spiral; determinate
D) spiral; indeterminate
E) blastopore;synapomorphy
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Multiple Choice
A) temperature regulation
B) minimization of water loss
C) respiration
D) flight
E) protection
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Multiple Choice
A) hair.
B) mammary glands.
C) three middle ear bones.
D) incisors, canines, premolars, and molars.
E) diapsid skull.
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Multiple Choice
A) head end
B) tail end
C) adult
D) larva
E) egg
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Multiple Choice
A) lungs.
B) nerves.
C) cranium.
D) jaws.
E) head muscles.
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Multiple Choice
A) digestive system.
B) nervous system.
C) closed circulatory system.
D) water vascular system.
E) mantle.
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