Biology: The Dynamics of Life, California Edition

Section 1: Mollusks

Mollusks

1.
What is the name of a snail's tonguelike organ?
A)coelom
B)shell
C)radula
D)mantle
2.
Which of these shells represents a bivalve?
A)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181858/ch27_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"> (2.0K)</a>
B)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181858/ch27_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"> (1.0K)</a>
C)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181858/ch27_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"> (1.0K)</a>
D)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181858/ch27_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"> (1.0K)</a>
3.
How do bivalves feed themselves?
A)Bivalves are predators.
B)Bivalves are parasites.
C)Bivalves are grazers.
D)Bivalves are filter feeders.
4.
Periwinkles, conches, whelks, and slugs are all classified as __________.
A)cephalopods
B)annelids
C)bivalves
D)gastropods
5.
Which of these is a characteristic of mollusks?
A)a digestive tract with one opening
B)a radially symmetrical body plan
C)a muscular foot
D)a pseudocoelom
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