mod 14 Flashcards
Exclusively marine habitat; occur in all oceans at all depths; all bottom dwellers with a few pelagic
Phylum Echinodermata
Phylum Echinodermata (Shape)
Pentaradial symmetry
The side with the mouth
Oral side/surface
Grooves bordered by spines that extends from the mouth and through each arm; may be open or closed, depending on the class
Ambulacral grooves
Small tubes that expel small amounts of water to help the body crawl
Tube feet/Podia
The opposite sode; usually facing up
Aboral side/surface
Red/orange plate that filters water inward
Madreporite
Projections in the body cavity that serves for respiration and waste removal
Papulae (skin gills)
Small claw-shaped appendages with movable “jaws” that functions for defense, protect body surface from debris, and sometiimes aid in food capture
Pedicellaria
Connective tissues that hold the calcareous plates together
Catch Collagen
Anus is found on the ____ side
Aboral
An essential part of the system; a button-like plate on the aboral surface that filters water into the water-vascular system and acts like a pressure-equalizing value
Madreporite
Sea stars’ simple eye
ocellus
the adoptive and intentional detachment of animal body parts as a defense mechanism
Autotomy
This is a unique to echinoderms that filters water allowing them to move, respire, and excrete waste
Water-Vascular system
