Biology: The Dynamics of Life, California Edition

Chapter 27: Mollusks and Segmented Worms

Mollusks and Segmented Worms

1.
Which body part enables segmented worms to move?
A)crop
B)stomach foot
C)nephridia
D)setae
2.
Periwinkles, conches, whelks, and slugs are all classified as __________.
A)gastropods
B)bivalves
C)annelids
D)cephalopods
3.
Which of these shells represents a bivalve?
A)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181857/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/0078665809/181857/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/0078665809/181857/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/0078665809/181857/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>
4.
Which of these animals has setae?
A)cuttlefish
B)scallops
C)abalones
D)leeches
5.
How do bivalves feed themselves?
A)Bivalves are parasites.
B)Bivalves are filter feeders.
C)Bivalves are grazers.
D)Bivalves are predators.
6.
What is the name of a snail's tonguelike organ?
A)shell
B)coelom
C)radula
D)mantle
7.
Which of these statements about shelled gastropods is NOT true?
A)Shelled gastropods are omnivores.
B)Shelled gastropods are predators.
C)Shelled gastropods are parasites.
D)Shelled gastropods are herbivores.
8.
Segmented worms have __________.
A)radial symmetry
B)a closed circulatory system
C)asymmetry
D)an open circulatory system
9.
Which of these animals is NOT a mollusk?
A)slugs
B)sponges
C)squids
D)snails
10.
Which of these is NOT a characteristic of bivalves?
A)Bivalves have two shells connected by a ligament.
B)Bivalve species are mostly found in marine environments.
C)Bivalves are parasites.
D)Bivalves use gill cilia in their feeding process.
11.
Which of these is a characteristic of mollusks?
A)a pseudocoelom
B)a muscular foot
C)a radially symmetrical body plan
D)a digestive tract with one opening
12.
What is the function of an earthworm's gizzard?
A)It takes food into the earthworm's body.
B)It grinds the earthworm's food into small pieces.
C)It sends messages from the earthworm's brain to its nerve fibers.
D)It enables the earthworm to move.
13.
Which of these animals is a cephalopod?
A)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181784/ch27_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"> (2.0K)</a>
B)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181784/ch27_0_f.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/0078665809/181784/ch27_0_g.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>
D)<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0078665809/181784/ch27_0_h.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>
14.
Leeches and earthworms are both __________.
A)hermaphrodites
B)asymmetrical
C)limpets
D)bristleworms
15.
Which of these animals are polychaetes?
A)plumed worms
B)leeches
C)earthworms
D)nematodes
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