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Evolution of the Animal Phyla
gragh
34
Biology
11th Grade
02/01/2007

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Term
Domain Eukarya
Definition
Contains all Eukaryotes.
Term
Kingdom Protista
Definition
Simple, Single-celled eukaryotes.
Term
Kingdom Plantae
Definition
Contains all plants.
Term
Kingdom Fungi
Definition
Contain all fungi.
Term
Kingdom Animalia
Definition
Contains all animals.
Term
Blastospore
Definition
Where blastula invaginates, becomes the gut.
Term
Subkingdom Parazoa
Definition
Near Animal. In between Protista and Animalia.
Term
Phylum Porifera
Definition
Complex Multicellularity and Choanocytes (Sponges).
Term
Complex Multicellularity
Definition
A bunch of cells working together.
Term
Choanocytes
Definition
Early cells that sponges are made of.
Term
Subkingdom Eumetazoa
Definition
True Animals.
Term
Radiata
Definition
Group of the Eumetazoa, has Radial Symmetry and two tissue layers.
Term
Radial Symmetry
Definition
The same all the way around the central axis.
Term
Phylum Cnidaria
Definition
Has radial symmetry (Jellies).
Term
Cnidocytes
Definition
Specialized cells in Cnidaria for stinging.
Term
Nematocysts
Definition
"Harpoons" shot out to sting.
Term
Phylum Ctenophora
Definition
(Comb Jellies).
Term
Bilateria
Definition
Group of the Eumetazoa, Bilateral symmerty, Internal Organs, third tissue layer: Mesoderm.
Term
Phylum Platyhelminthes
Definition
Has Cephalization (Flatworms).
Term
Cephilization
Definition
Head.
Term
Acoelomate
Definition
No body cavity, ectoderm followed directly by mesoderm.
Term
Pseudocoelomate
Definition
Space between the ectoderm and mesoderm.
Term
Coelomate
Definition
Body cavity completely sorrounded by the mesoderm.
Term
Coelomate Animals
Definition
Animals with a true Coelom.
Term
The Protostomes
Definition
First mouth.
Term
Phylum Mollusca
Definition
Has coelom and complex organs (Snails, shellfish, octopuses, and squids).
Term
Phylum Annelida
Definition
Has Segmentation (Segmented worms, earthworms).
Term
Phylum Anthropoda
Definition
Has jointed appendages and exoskeletons (Spiders, insects, crustations, millipedes, centipedes).
Term
Jointed Appendages
Definition
Legs, wings, etc.
Term
Exoskeleton
Definition
Outer Skeleton
Term
The Deuterostomes
Definition
Second Mouth
Term
Deuterostome Development
Definition
Blastospore becomes the anus.
Term
Endoskeleton
Definition
Inner Skeleton
Term
Water Vascular System
Definition
Enclosed system of tubes that fill with water and allow animals to move arms.
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