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Phylum Porifera
The Sponges
Habitat: mainly marine (salt water)
Porous body wall.
The pores or holes allow water to pass through.
Sessile feeders - attached to shells or rocks on the ocean floor as they feed.
Shape: asymmetrical - no definite shape.
Phylum Coelenterata
The Coelenterates: jellyfish, hydras, corals
Habitat: Marine
2 cell layers called the ectoderm and endoderm
Symmetry: radial
Phylum Platyhelminthes – The Flatworms: planaria, tapeworms
Habitat: Fresh and Salt water, Terrestrial
Body: Flat body, ectoderm, endoderm, mesoderm
Symmetry: Bilateral
Digestive System: Incomplete
Special: Eyespots at is back and front ends
Phylum Nematoda - The Roundworms
Habitat: Fresh and salt water, terrestrial
Body: Long, smooth and unsegmented
Digestive System: Complete
Anterior and Posterior end
Phylum Annelida - The Segmented Worms: Earthworm, leech, Sandworm
Habitat: Marine, freshwater, terrestrial
Body: segmented internally and externally for quicker responses for movement
Digestive System: Complete, tube within a tube body plan
Symmetry: Bilateral, posterior and anterior ends dorsal and ventral surfaces
Phylum Anthropoda - Insects, Spiders and Crustaceans
Habitat: Found in all environments
Body: Segmented body, jointed appendages, divided into a head, abdomen and thorax
Exoskeleton: Made of Chitin
Phylum Mollusca - Clams, Snails, Oysters, Octopus
Habitat: Marine and freshwater, terrestrial
Body: Soft, unsegmented, strong muscular foot on ventral surface
Radula: Tongue like organ
Mantle: Fold of skin surrounding body organs
Phylum Echinodermata - Sea stars, Sea urchins
Habitat: Marine, live on ocean floor
Body: Internal, limy skeleton, spiny outside, provides support and protection
Symmetry: Radial
Special: Known for water-vascular system, suction cups
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