Biology: The Dynamics of Life, California Edition

Chapter 29: Echinoderms and Invertebrate Chordates

Echinoderms and Invertebrate Chordates

Your Results:

The correct answer for each question is indicated by a .

1.			__________ is the opening for the water vascular system. Need a Hint?
			A)	The madreporite
			B)	The spines
			C)	The pharynx
			D)	The eyespot
2.			Which sea star organ is responsible for the elimination of body wastes? Need a Hint?
			A)	the pharynx
			B)	the endoskeleton
			C)	the chelicerae
			D)	the anus
3.			Which of these animals is classified differently than the others? Need a Hint?
			A)	sea urchins
			B)	sea squirts
			C)	sea lilies
			D)	sea daisies
4.			Sea stars are the only echinoderm with __________. Need a Hint?
			A)	endoskeletons
			B)	pedicellariae
			C)	an eyespot
			D)	asymmetry
5.			Which of these compounds is part of an echinoderm's endoskeleton? Need a Hint?
			A)	carbon dioxide
			B)	calcium carbonate
			C)	hydrogen peroxide
			D)	sodium chloride
6.			What is the difference between the larval stage and the adult stage of an echinoderm? Need a Hint?
			A)	Echinoderms in the larval stage are predators; the adults are herbivores.
			B)	The larval stage has bilateral symmetry and the adult has radial symmetry.
			C)	Echinoderms in the larval stage have no brains and have brains.
			D)	Echinoderms in the larval stage have eyespots; the adults have only light-sensitive cells.
7.			What is the difference between vertebrate chordates and invertebrate chordates? Need a Hint?
			A)	All vertebrate chordates develop a backbone but invertebrate chordates do not.
			B)	All vertebrate chordates are filter feeders; invertebrate chordates are predators.
			C)	All vertebrate chordates are sessile and all invertebrate chordates are free-living.
			D)	All vertebrate chordates reproduce asexually; vertebrates reproduce by parthenogenesis.
8.			Which of these is a sea cucumber? Need a Hint?
			A)	<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181857/ch29_0_b.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (3.0K)</a>
			B)	<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181857/ch29_0_c.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (2.0K)</a>
			C)	<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181857/ch29_0_d.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (3.0K)</a>
			D)	<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181857/ch29_0_e.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (3.0K)</a>
9.			While some species have more than 40, most sea stars have 5 __________. Need a Hint?
			A)	madreporites
			B)	tails
			C)	tube feet
			D)	rays
10.			Which of these is NOT a chordate? Need a Hint?
			A)	sea squirt
			B)	sand dollar
			C)	tuna
			D)	lancet
11.			A sea star uses its __________ for protection from predators. Need a Hint?
			A)	madreporites
			B)	anus
			C)	pedicellariae
			D)	eyespots
12.			How do lancets feed themselves? Need a Hint?
			A)	They are scavengers.
			B)	They are predators.
			C)	They are parasites.
			D)	They are filter feeders.
13.			Chordate embryos have __________. Need a Hint?
			A)	an eyespot
			B)	a notochord
			C)	tube feet
			D)	pedicellariae
14.			<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0078665809/181857/ch29_0_a.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (11.0K)</a> Which structure shown is the only indicator that tunicates are chordates? Need a Hint?
			A)	mouth
			B)	anus
			C)	reproductive organs
			D)	gill slits
15.			Which of these features is NOT a characteristic of a chordate? Need a Hint?
			A)	a postanal tail
			B)	an asymmetric body plan
			C)	a dorsal hollow nerve cord
			D)	a notochord

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