SIMPLE INVERTEBRATES
An identical, or almost identical, repeating body part.
What is a SEGMENT?
A hard outer covering.
What is an EXOSKELETON?
A hard and bony or stiff and flexible internal skeleton.
What is an ENDOSKELTON?
Invertebrates make up ___% of the animal kingdom!
96%
The most familiar annelid worm.
What is an EARTHWORM?
An eye that is made up of many identical, light-sensitive units.
What is a COMPOUND EYE?
Meaning "spiny skinned" due to spines on the animals skeleton.
What is an ECHINODERM?
Wormlike creatures with many legs.
CENTIPEDES
The two types of circulatory systems in Mollusks.
What are open and closed circulatory systems?
An echinoderm that had bilateral symmetry as a larva and redial symmetry as and adult.
What is a SEA URCHIN?
Arthropods with one set of antennae, compound eyes, and mandibles.
INSECTS
The three major classifications of Mollusks.
What are GASTROPODS, BIVALVES and CEPHALOPODS?
The one characteristic that is unique to echinoderms and is a system of canals filled with fluid.
What is a WATER VASCULAR SYSTEM?
Ocean animals with gills, mandibles, and two pairs of antennae.
CRUSTACEANS
The four body parts of all Mollusks.
What are the FOOT (headfoot), VISCERAL MASS, MANTLE, and SHELL?
The three parts of an insects body.
What are the HEAD, THORAX, and ABDOMEN?
Sea Stars, Brittle and Basket Stars, Sea Urchins and Sand Dollars, Sea Lillies and Feather Stars, and Sea Cucumbers.
What are the FIVE MAJOR CLASSES of echinoderms?
Arthropods with no antennae, simple eyes, and chelicerae.
ARACHNIDS