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WorksheetsMollusk make-up test
Total questions: 31
Worksheet time: 20mins
Bivalve means...
(a)
Characteristics of a mollusk:
(check all that apply)
soft bodied
bilateral symmetry
vertebrate
radial symmetry only
Most mollusks have an external or internal ...
(a)
The muscle that also acts as a hinge that keeps the two pieces of shell together or allows it to open is called
calcium carbonate
the mantle
the adductor
the beak
"Glands in the mantle that secrete calcium carbonate"
What is being described in the above statement?
How the adductor muscles are made?
How the shell is made?
How a clam digests food?
How a clam breathes?
What do bivalves use siphon tubes for?
(name two)
(a)
The incurrent siphon, microscopic cilia, and gills are all a part of what process?
(a)
What kind of circulatory system does a bivalve have?
open circulatory system
closed circulatory system
How do mussels attach to rocks?
mucus
microscopic cilia
adductor muscle
bissel threads
What is the excurrent siphon used for?
food waste
food intake
oxygen intake
all of the above
What does gastropod translate to?
(give two words)
(a)
A thick pad of tissue that closes like a trap door over the snail's foot for protection is called...
nudibranch
calcium carbonate
mantle
operculum
What is a nudibranch?
A gastropod with two shells.
A gastropod with no/reduced shell , sea slug.
A gastropod with two feet.
How do sea slugs defend themselves?
(pick two)
They are brightly colored as a warning.
They can turn themselves inside out.
It uses stinging cells.
They are fast swimmers.
How are sea hares and cephalopods similar?
they can release dark ink to confuse and escape predators
they are fast swimmers
they swim in groups
they have a beak
What does cephalopod translate to?
(give two words)
(a)
Which mollusk is the best swimmer?
cephalopod
bivalve
gastropod
Cephalopods are able to move their siphon for which purpose?
to direct their ink
to change direction
to take in more water
to eat faster
What makes cephalopods swim faster than bivalves and gastropods?
(name two for credit, three will get you bonus)
(a)
What type of circulatory system does a cephalopod have?
open
closed
both open and closed
What does octopus translate to?
(give at least two words)
(a)
Describe a difference between squid and octopus.
(hint: tentacles and arms, but be specific)
(a)
Which one of the following lives in groups, mainly for protection?
nautilus
octopus
squid
cuttlefish
These special pigmented cells in the skin expand and contact causing the changes in skin pattern and coloration.
chiton
cuttle cells
chromatophores
tusk cells
Which class of mollusks have no eyes on their heads but do have "overlapping shells"?
chiton
scaphopod
cephalopods
chambered nautilus
A class of mollusks that includes tusk shells, burrow in sand of deep waters, while some live in sediment of shallow tropical waters. Their long foot helps them anchor in the sand.
chiton
cuttlefish
chambered nautilus
scaphopoda
Choose two cephalopods:
cuttlefish
chambered nautilus
limpet
abalone
True or False
Some snails are scavengers, while others are grazers.
true
false
a swimming, ciliated larva from a mud snail
proboscis
radula
veliger
whelk
A one-way digestive system has...
two openings
one opening
no opening
three openings
What do bivalves use siphon tubes for?
(name two)
(a)
