Cephalopods, gastropods, bivalves with two hinged shells
Sea stars, brittle stars, sea urchins, sea cucumbers, sand dollars, sea lilies, and feather stars
Bilateral Symmetry
Worms
Exoskeletons
100
They capture their prey using the suckers on their tentacles.
What is an octopus?
100
Are all radially symmetrical.
What is an echinoderm?
100
All have six legs.
What is an insect?
100
A parasite that is known to suck blood of mammals.
What is a leech?
100
Are used for protection and to support soft internal tissues and organs.
What is an exoskeleton?
200
Strain food from water by filtering it through their gills.
What is a clam?
200
A dorsal hollow nerve cord.
What is a notochord?
200
All of the invertabrates in this phylum are bilaterally symmetrical.
What is Arthropods?
200
Bristlelike hairs that extend fron body segments.
What is setae?
200
Arthropods most likely evolved from this.
What is a segmented worm?
300
Two animals capable of swimming by jet propulsion.
What is a squid or octopus.
300
The tube feet operate by means of a hydraulic water vascular system.
What is a sea star?
300
Has four pairs of jointed legs and chelicerae, which are biting appendages near the mouth.
What is the black widow.
300
Have no body cavity.
What is a planarian?
300
Is rumored to have 1,000 legs but no known member of the species actually does.
What is a millipede?
400
Use their radulas to scrape algae from rock surfaces.
What is a gastropod?
400
Have leathery skin and are flexible.
What is a sea cucumber?
400
Have piercing mouthparts that cut through your skin to suck up blood.
What is a mosquito?
400
A layer of cells between the ectoderm and endoderm.
What is a mesoderm?
400
Arthropods that have antennae and two compound eyes on movable stalks.
What are crustaceans?
500
A thin membrane that surrounds the internal organs.
What is a mantle?
500
Paired openings in the pharynx.
What are gill slits?
500
Contain a variety of types of mouthparts for feeding.
What is an arthropod?
500
A fluid filled body cavity.
What is a pseudocoelom?
500
Fossils of arthropods are often found more than this type of species because they have a greater complexity of structure.
What are segmented worms?
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