Lab Test 4 Flashcards
(113 cards)
Cross section of Star fish arm
Lancelet
Cross section of Lancelet
Starfish belong to what Phylum? What are the key characteristics of this phylum?
Echinodermata
Radial symmetry as adults, bilateral as larvae. No segmentation. Lack a brain and complex sensory organs
What class are starfish?
Asteroidea
Echinodermata terms:
The side of the body furthest from the mouth
Aboral side
Echinodermata terms:
Plate composed of calcium carbonate through which water enters the body
Madreporite
Echinodermata terms:
Appendage used for moving
Arm
Echinodermata terms:
Contains the internal organs and from which the arms extend, and contains the anus and mouth
Central disc
Echinodermata terms:
Calcareous extensions of the exoskeleton used for protection
Spine
Echinodermata terms:
side of the body that contains the mouth
Oral side