Definitions
This is the tooth-like structure that helps mollusks eat.
Radula
How many shells do bivalves have?
2
What type of system helps starfish move?
water-vascular system
What is the name for an internal skeleton made of hard plates that may protrude through the skin?
Endoskeleton
Sea Lilies are an example of what phylum?
Echinodermata
The fleshy tissue that covers and protects the mollusk's internal body parts.
Mantle
These are animals that belong to the Polyplacophora class and can grow to 30 centimeters.
Chitons
What kind of skin do echinoderms have?
spiny skin
Bivalves use what to catch food drifting in the water?
Cilia
What does "gastropod" mean?
stomach-footed
Soft body creatures that share common body parts like a mantle, head, and foot.
Mollusks
What special body part do mollusks use to breathe?
gills
Canals attach to this body part that help echinoderms move.
tube feet
What body parts help mollusks move?
foot
How many species of mollusks do we have in the world?
more than 100,000
These are mollusks that have a shell of 2 halves.
Bivalves
What does cephalopod mean?
"head footed"
What are the endoskeletons made up of?
Calcium carbonate
This is the lid-like structure that closes when the snail retreats into its shell.
operculum
The leathery flesh that holds the chiton's plates together is called...
girdle
Sea stars, sand dollars, brittle stars, sea cucumbers, and sea urchins are considered what?
Echinoderms
Snails and slugs are an example of what class?
Gastropoda
What stage of an echinoderm's life would it have bilateral symmetry?
larva stage
Water flows out of the clam through what body part?
Siphon
Sea cucumbers are an example of what phylum?
Echinodermata