Biology: The Dynamics of Life, California Edition

Chapter 29: Echinoderms and Invertebrate Chordates

Echinoderms and Invertebrate Chordates

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The correct answer for each question is indicated by a .

1.			<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181859/Ch29_0_a.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> Identify the notochord in Figure 29-3. Need a Hint?
			A)	A
			B)	D
			C)	C
			D)	B
2.			Where does water enter and leave from in a sea star? Need a Hint?
			A)	ampulla
			B)	pedicellariae
			C)	tube feet
			D)	madreporite
3.			An animal that retains its chordate features throughout life is the _____. Need a Hint?
			A)	sand dollar
			B)	sea squirt
			C)	seastar
			D)	lancelet
4.			When are feather stars sessile? Need a Hint?
			A)	in the larval stage
			B)	in both larval and adult stages
			C)	They are sessile during all stages of life.
			D)	in the adult stage
5.			<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181859/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"> (5.0K)</a> Where is the dorsal nerve cord in Figure 29-5? Need a Hint?
			A)	within the tunic
			B)	along the heart and circulatory system
			C)	it disappeared after the larval stage
			D)	surrounding the pharynx
6.			A sea star can hold tightly to the surface it is touching because of the _____. Need a Hint?
			A)	eyespots
			B)	sieve in the madreporite
			C)	endoskeleton
			D)	suction in the tube feet
7.			<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181859/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"> (5.0K)</a> What structure shown in the adult sea squirt in Figure 29-5 indicates it’s a chordate? Need a Hint?
			A)	anus
			B)	ciliated grooves
			C)	gill slits
			D)	heart
8.			<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181859/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> Which structure in Figure 29-4 is a characteristic only chordates have? Need a Hint?
			A)	D
			B)	B
			C)	A
			D)	C
9.			The type of symmetry found in all adult echinoderms is _____. Need a Hint?
			A)	radial
			B)	horizontal
			C)	bilateral
			D)	regional
10.			<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181859/Ch29_0_a.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> The notochord shown in Figure 29-3 is surrounded on two sides by what? Need a Hint?
			A)	ectoderm
			B)	mesoderm
			C)	exoderm
			D)	endoderm

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