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Mollusca
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Q.1
What are two defining traits of a mollusk?
Soft-Bodied
Internal or External Shell
Stomach
Both A & B
Q.2
What are the three major classes of mollusks?
Gastropods
Bivalves
Cephalopods
All of above
Q.3
How do cephalopods and gastropods reproduce?
internal fertilization by specialized appendage
external fertilization by expelling gametes in the water
Q.4
Bivalves reproduce by
expelling gametes into the water
internal fertilization by a specialized appendage
Q.5
All molluscs have shells.
true
false
Q.6
Cephalopods use these colored pigment cells that can contract and expand in order to produce colors, textures and patterns.
Chromatophores
Ctenidia
Olfactory Receptors
Radulations
Mantle Pores
Q.7
This appendage of the mollusc is used for movement and grasping.
Foot
Mantle
Radula
Ctenidia
Limpet
Q.8
Which class of Mollusks have many species that are sessile?
Gastropods
Bivalves
Cephalopods
arthropods
Q.9
Which class of molluscs include clams, scallops, and mussels?
Gastropoda
Bivalvia
Cephalopoda
Q.10
How do bivalves feed?
Filter feeders
Radula
Tentacles
Q.11
What type of symmetry do molluscs have?
Asymmetrical
Bilateral
Radial
Q.12
These molluscs have a head and a modified foot that are now arms or tentacles.
Cephalopods
Nudibranches
Gastropods
Bivalves
Ctenidia
Q.13
This is the outer fold of skin on molluscs, and is responsible for excreting the substance that forms the mollusc's shell.
Radula
Mantle
Foot
Ctenidia
Cockle
Q.14
The shell of a mollusc is made out of what compound?
Calcium Carbonate
Calcium Phosphate
Calcium
Iron Phosphate
Strontium Chloride
Q.15
This file-like ribbon of "teeth" is used by molluscs to scrape algae and other food off of rocks and can even drill through the shells of prey.
Calcium Carbonate
Radula
Foot
Mantle
Ctenidia
Q.16
What does the term mollusca mean in Latin?
Soft-bodied
Hard-bodied
Foot
Slimy
Seafloor
Q.17
The squid has a well developed _________________ circulatory system
Closed
Open
IDK
Well developed
Q.18
Which is not why a giant squid is a formidable predator?
Strong/Muscular arms and tentacles
Large, well developed eyes
Small beak
Strong specialized mouth with toxic saliva
Q.19
The squid brain is the most __________________ invertebrate brain and is composed of the typical molluscan ganglia that have fused
complex
simple
compelling
closed
Q.20
Where do fertilized eggs develop?
Uterus
Externally
Cervix
Gills
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