Biology: The Dynamics of Life, California Edition

Section 1: Echinoderms

Echinoderms

1.
What is the difference between the larval stage and the adult stage of an echinoderm?
A)Echinoderms in the larval stage have no brains.
B)The larval stage has bilateral symmetry and the adult has radial symmetry.
C)echinoderms in the larval stage are predators; adults are herbivores
D)Echinoderms in the larval stage have eyespots; the adults have light-sensitive cells.
2.
__________ is the opening for the water vascular system.
A)The spines
B)The madreporite
C)The eyespot
D)The pharynx
3.
A sea star uses its __________ for protection from predators.
A)madreporites
B)anus
C)pedicellariae
D)eyespots
4.
Which of these animals is classified differently than the others?
A)sea urchins
B)sea daisies
C)sea squirts
D)sea lilies
5.
Which of these compounds is part of an echinoderm's endoskeleton?
A)carbon dioxide
B)hydrogen peroxide
C)calcium carbonate
D)sodium chloride
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