Digestive System: Evolution & Classification
Biology - Section 3
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Mollusca (Gentilella)
Clam
Octopus
Snail
Porifera (Gentilella)
Calcarea
Hexactinellida
Demospongiae
Cnidaria (Gentilella)
Coral
Jellyfish
Sea Anemone
Platyhelminthes (Theodore)
Trematoda
Cestoda
Turbellaria
Nematoda (Theodore)
Ancylostoma duodenale (Hookworms)
Trichuris Trichiura
Pinworms
Annelida (Theodore)
Earthworms
Leeches
Polychaetes
Arthropods (Edwards)
Spider
Scorpion
Butterfly
Echinodermata (Edwards)
Sea Star
Sea Urchin
Sand Dollar
Chordata (Edwards)
Tiger
Lion
Horse
Echinodermata
Facts
Do not have blood
Can regenerate its body parts
All feature Radial Symmetry
Have no eyes
Some feed by ejecting their stomachs