Echinoderms
Mollusks
Annelids
Cnidarians
100
This is the name of the hard shell left behind after a sand dollar or sea urchin dies.
What is a test?
100
Many cephalopods squirt this in order to avoid being caught by a predator.
What is ink?
100
These are found on the outside of an earthworm and help the earthworm move.
What are bristles?
100
All cnidarians have these in common.
What are stingers?
200
This body part comes out of the starfish in order to digest food.
What is the stomach?
200
These are found on a clam's shell and can tell you how old the clam is.
What are rings?
200
Animals that are both males and females at the same time are called this.
What is a hermaphrodite?
200
The sting of these sessile cnidarians does not bother the clown fish.
What are sea anemones?
300
These parts of all echinoderms help them move across the sea floor.
What are tube feet?
300
These colorful gastropods are also known as sea slugs and are found in marine habitats.
What is a nudibranch?
300
This annelid is a blood-feeding parasite found in wet environments.
What is a leech?
300
This monster from Greek mythology had snakes instead of hair, and is also the name of the adult form of the jellyfish.
What is a medusa?
400
This type of habitat is where all echinoderms are found.
What are marine habitats?
400
This hard thing looks like a piece of plastic and is found inside a squid's head.
What is a pen?
400
All annelids have a long, thin body made up of many of these.
What are segments or rings?
400
These are the non-stinging tentacles that move the food toward the jellyfish's mouth.
What are oral arms?
500
These are located on the tips of a sea star's arms.
What are light sensors, or primitive eyes?
500
These four types of animals belong to the class of animals called the bivalves.
What are clams, oysters, mussels, and scallops?
500
This part of an earthworm's body develops into a ring full of eggs and slides off the worm into the soil.
What is a clitellum?
500
This monster from Greek mythology could grow two new heads for every one chopped off, and is also the name of a cnidarian with a similar ability.
What is a hydra?
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