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Bilateral, radial, and asymmetrical
What are the three types of invertebrate symmetry?
Flatworms, round worms, segmented worms
What are the three major groups of worms?
Bivalves, gastropods, and cephalopods
What are the three groups of mollusks?
A group of animals with tube feet that they can use to pry apart their prey with great pressure
What are echinoderms?
Organisms that have tentacles with nematocysts to stun their prey and a central cavity with a mouth
What are cnidarians?
Flagella, collar cells, osculum, and spicules
What are parts of a sponge?
Oxygen and carbon dioxide only pass through their skin if it is moist
Why must earthworms stay moist?
A mollusk with a single or no shell and a foot for moving. A snail.
What is a gastropod?
Sea stars, sand dollars, sea urchins
What are some examples of echinoderms?
A cnidarian with a bowl-shaped body
What is a medusa?
Animal features that are not found in sponges
What are mouths, intestines, and major body systems?
Adding nutrients to the soil, aerating the soil, a food source for other animals
What are the important roles of worms in the ground?
A mollusk with a head, tentacles, and beak-like jaw.
What is a cephalopod?
Echinoderms that spew their intestines to defend themselves
What are sea cucumbers?
The only freshwater cnidarian
What is a hydra?
A sponge eating
What is sweeping water in through ostia and filtering it through a central cavity with collar cells digesting the food particles?
A worm with a ribbon-shaped body, mouth, and gut
What is a flatworm?
Octopuses, squid, and nautiluses
What are examples of cephalopods?
The characteristics of echinoderms
What are an endoskeleton, spiny skin, tube feet, and 5-part radial symmetry?
A cnidarian with a vase-shaped body
What is a polyp?
They have algae inside that help feed them
What is the reason coral must be able to reach sunlight?
A worm with an unsegmented body that moves by flipping and bending
What is a round worm?
Mollusks with two shells that are held together by powerful muscles. Clams, oysters, mussels, and scallops.
What are bivalves?
An internal skeleton
What is an endoskeleton?
A polyp cnidarian that looks like a flower
What is a sea anemone?