Biology (Raven), 10th Edition

Chapter 35: Deuterostomes

Pre-Test

1
Select the nearest relative of chordates.
A)fishes
B)amphibians
C)reptiles
D)echinoderms
E)mammals
2
True or false: Nonvertebrate chordates have notochords but no vertebrae or bones.
A)true
B)false
3
Select the distinguishing characteristic(s) of vertebrate chordates.
A)notochord
B)bony or cartilaginous exoskeleton
C)open or closed circulatory system
D)neural crest
E)All of the choices are correct.
4
In which of the following animal groups did the jaw evolve?
A)echinoderms
B)amphibians
C)fishes
D)reptiles
E)therapsids
5
Which of these statements is TRUE about echinoderms?
A)Echinoderms are a relatively recent lineage.
B)Echinoderms are characterized by deuterostome development, pentaradial symmetry, an endoskeleton covered by a delicate epidermis, and a water-vascular system.
C)Echinoderm symmetry is lacking in larvae and bilateral in adults.
D)The water-vascular system is the only coelomic compartment
E)The four classes of echinoderms are Chelicerata, Crustacea, Hexapoda, and Myriapoda.
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