Worksheets9.3 Phylum Mollusca
Total questions: 20
Worksheet time: 12mins
What class of molluscs does this nudibranch (sea slug) belong to?
Arthropoda
Gastropoda
Cephalopoda
Bivalva
Which of the following is a characteristic of the phylum Mollusca?
Radial symmetry
Bilateral symmetry
No true body tissues
Lack of organ systems
What type of body symmetry is found in molluscs?
Radial Symmetry
Asymmetry
Bilateral Symmetry
Spherical Symmetry
What is the function of the mantle in the body?
It is used for movement.
It creates the shell and protects organs.
It contains the organs.
It is used for digestion.
Which part of the body is ventrally located and used for movement?
Mantle
Visceral mass
Foot
Shell
What is the function of the radula in mollusks?
Digestion
Locomotion
Feeding
Reproduction
What does the term Gastropoda mean?
Stomach foot
Head foot
Winged foot
Tail foot
Which of the following is an example of a gastropod?
Abalone
Octopus
Nautilus
Mussel
Which of the following is an example of a cephalopod?
Abalone
Octopus
Nudibranch
Mussel
Which of the following is an example of a bivalve?
Cone Snail
Scallop
Squid
Nudibranch
Which part of the organism is responsible for water intake?
Siphons
Shell
Foot
Sediment
What special feature do cephalopods have that allows them to change color?
Scales
Color-changing cells
Feathers
Fur
What does the suffix "phor" mean in the term "chromatophores"?
To see
To hear
To carry/bear
To change
Which of the following colors is NOT shown in the chromatophore diagram?
Yellow
Red
Blue
Brown
What is the main role of chromatophores in cephalopods?
Digestion
Reproduction
Color change
Movement
Which of the following is NOT a class within the phylum Mollusca?
Cephalopoda
Crustacea
Bivalvia
Gastropoda
Which phyla has a soft unsegmented body and can be protected by a shell?
Porifera
Mollusks
Echinoderm
Annelid
Which class name of mollusca means "head-foot"
Cephalopoda
Gastropods
Molllusca
Parapodia
Mussels use these to attach to rocks in the intertidal zone when the waves crash over them.
byssal threads
tentacles
radula
mantle
