Vocabulary
Examples
Flatworms
Roundworms
Annelids
100
Type of circulatory system in which the blood circulates through the body inside of vessels.
What is a closed system?
100
Sea Stars, Sea Cucumbers, Sand Dollars, Sea Urchins, and Brittle Stars
What are echinoderms?
100
Most of these can be described as this.
What is parasitic?
100
Most of these can be described as this.
What is free-living?
100
Free living annelid found most often in soil.
What is an earthworm?
200
An organism that can produce both eggs and sperm in the same body.
What is a hermaphrodite?
200
Insects, Crustaceans, Arachnids, Centipedes, Millipede
What are arthropods?
200
The only free-living example of flatworms.
What is a planarian?
200
Describes the shape of both ends of roundworms.
What is tapered?
200
Parasitic annelid found living in fresh water.
What is a leech?
300
An organism that spends most of its life in one location and does not move.
What is sessile?
300
Gastropods, Cephalopods, Bivalves
What are mollusks?
300
Flatworm whose body grows by segments & lives in the intestinal tracts of animals.
What are tapeworms?
300
Thick outer covering that is tough & flexible.
What is cuticle?
300
Organ that earthworms use for respiration.
What is skin?
400
A circulatory system in which the blood flows freely around the organs, not inside of vessels.
What is open circulatory system?
400
Earthworms and Leeches
What are annelids?
400
Tiny parasitic flatworms that survive by invading body organs.
What are flukes?
400
Synonym for roundworm.
What is nematode?
400
Annelid that is found in oceans & seas.
What are marine worms?
500
An organism that lives on or in a host organism that often causes the host harm.
What is a parasite?
500
Jellyfish, Anemones, Corals
What are cnidarians?
500
The number of body openings in the digestive systems of flatworms.
What is one?
500
Place where you will find most roundworms living.
What is soil?
500
Organ that annelids who live in water use for respiration.
What are gills?
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