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Phylum Echinodermata
Dias animals males/ female
Ossicles
Tiny bones made of calcium carbonate skeleton of sand dollar.
Pentaradial Symmetry
everything is a multiple of five
Madreporite Plate
Water vascular system
ampullae
controlCoco troll function of tube feet
Stone Canal
Contacts to ring canal
Tube feet
Are in ambulacral grooves (star fish)
Ambulacral
Area where tube feet are located
Coelom
Body cavity
Peritoneum
Propel Coelomic fluid
Dermal branchiae
Extension of the peritoneum works like tongues texture
Pedicellariae
Remove debri and protect
Hemal system
pulsates like an inefficient heart.
Autonomy
Ability to break off part or their own bodies
Class Asteroidea
Sea stars arms thick at base
Crown of Thorns
A predator of corals
Class Ophiuroidea
brittle star mostly filter feeders some ingest substrate some predators
Class Echinoidea
Sea urchins sand dollars
Aristotles lantern
Operates five calcareous teeth
Secondary bilateral symmetry
In irregular urchins; second time bilateral has evolved
Class Holothuroidea
Sea cucumbers
Oral tentacles
Tentacles around the mouth
Respiratory tree
Connected to cloaca
Cloaca
Common opening of digestive and urinary tracts
Class Crinoidea
Sea Lillie's
Author
VIXARC
ID
174999
Card Set
Exam
Description
Echinoderms
Updated
2012-10-02T17:03:17Z
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