Echinodermata Flashcards
1
Q
What are the echinodermata?
A
Starfish, sea urchins, brittle stars
2
Q
What are the key characters?
A
Sessile of slow moving,
secondary radial symmetry, larva are bilateral, epidermis become endoskeleton of calcareous plates radiate from central morals, unique water vascular system
3
Q
What are the classes?
A
Asteroidea - starfish Opicroidea - brittle stars Echinoidea - sea urchins/sand dollars Crinoidea - sea lollies and feather stars Holothuroidea - sea cucumbers Coentrycycloides - sea daises
