External Clam Anatomy
Bivalve means...
two shells
Bivalves use this to crawl along the ocean floor. It is called a...
foot
These structures are used for grasping prey. They are the ______ and the ______.
arms and tentacles
To protect themselves from predators, Cephalopods will use this to create a smoke screen. What is it?
ink sac
During breathing, Mollusks absorb __________ from the water.
oxygen
The more bands on the back of the shell, the ? the bivalve is.
older
The thin membrane inside the clam that protects the internal organs is called the...
mantle
fins
three
In order to get food, compared to other Mollusks, Bivalves are...
filter feeders
The outside shell of a bivalve is made of...
calcium carbonate
Water and wastes exit a clam through the...
excurrent siphon tube
The ability to change color and blend in with the background is called...
camouflage
The esophagus in a squid passes through the...
brain
All Mollusks have a ______ ______ digestive tract.
one way
The hinge on the back of a bivalve is called a/an...
This structure is used to remove food caught on the gills in Bivalves. It is called a...
palp
The pigmented cells in the body of the squid used for changing color are called...
chromatophores
This is the internal shell of a squid that provides structure and support. What is it called?
pen
This structure is used to remove wastes, breathe, release gametes, and for movement in Cephalopods. It is called a...
siphon tube
Mussels, which are related to clams, have ______ _______ to attach to the ocean floor.
These are used by the clam to open and close the shell. They are called the...
adductor muscles
Many marine organisms have a darker back and a lighter belly that is referred to as...
counter shading
Female squids have a __________ __________, which is absent in male squids.
nidamental gland
The free swimming larval stage of a Mollusk is called...
veliger