Biology, Eighth Edition (Raven)

Chapter 35: Vertebrates

Post Test

What are the four principal features that characterize the chordates? (p. 682)
A)nerve chord, notochord, pharyngeal slits, gills
B)segmentation, lungs, postanal tail, nerve chord
C)nerve chord, notochord, pharyngeal slits, postanal tail
D)nerve chord, segmentation, pharyngeal slits, postanal tail
E)vertebral column, notochord, pharyngeal slits, postanal tail
Tunicates are chordates but are very different from the other two subphyla. What features associated them with the other chordates? (p. 683)
A)possession of a cellulose coat or tunic
B)radial symmetry
D)larval characteristics
What would happen if cells in the neural crest were damaged during development? (p. 684)
A)The head would not form.
B)Many different structures in the embryo would be affected.
C)The vertebral column would be abnormal.
D)The notochord would not develop.
E)all of the above
What adaptation(s) of the bony fishes probably led to them becoming the dominant group of fish? (p. 689)
A)their internal skeleton made of bone
B)evolution of the swim bladder
C)evolution of a hinged jaw
D)evolution of fins for efficient swimming
E)both a and c
What major factor(s) led to the amphibians being replaced as the dominant land vertebrate? (p. 693)
A)mass extinction at the end of the Permian period
B)mass extinction at the end of the Jurassic period
C)competition from therapsid reptiles
D)global warming
E)both a and c
What improvements do reptiles show over fish and amphibians? (p. 697)
B)a more efficient circulatory system
C)the evolution of a thicker skull
D)all of the above
True or False: Feathers first evolved for flight. (p. 702)
The defining characteristics of mammals are: (p. 704)
A)a large brain, mammary glands, and hair.
B)a large brain, endothermy, and hair.
C)endothermy, mammary glands, and hair.
D)hair, ectothermy, and mammary glands.
E)binocular vision, hair, and mammary glands.
What marks the beginning of the hominids? (p. 711)
A)increased brain size
C)binocular vision
D)opposable thumb
E)tool use
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