SIMPLE INVERTEBRATES
Animals that don't have backbones.
What is an INVERTEBRATE?
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?
That percentage of the animal kingdom are invertebrates. One million invertebrates have been named and biologists believe millions more have not been identified.
What is 97% of the animal kingdom?
A concentrated mass of nerve cells controlled by the brain.
What is a GANGLION?
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.
What are CENTIPEDES?
A pouch lined with cells that release chemicals that break down food into small particles is located inside this.
What is a COELOM?
Bivalve
What is the type of mollusk that has a shell with two valves?
A feeler that senses touch, taste, or smell.
What is an ANTENNA?
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.
What are INSECTS?
The three basic body plans, or type of symmetry, of all simple invertebrates.
What are bilateral symmetry, radial symmetry and asymmetrical?
The three major classifications of Mollusks.
What are GASTROPODS, BIVALVES and CEPHALOPODS?
Changing form as an organism develops.
What is METAMORPHOSIS?
The symmetry that adult echinoderms have.
What is a RADIAL SYMMETRY?
Ocean animals with gills, mandibles, and two pairs of antennae.
What are CRUSTACEANS?
An organism that invades and feeds on the body of another living organism, or host.
What is a PARASITE?
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.
What are ARACHNIDS?