This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: Slide of starfish arm Class Ophiuroidea o Have very slender arms o Creep along bottom of ocean very rapidly o Ex: brittle stars, basket stars Preserved and live specimens Class Crinoidea o Oral surface points upward o Have highly branched, feathery arms o Ex; sea lilies, feather stars Preserved specimens Class Echinoidea o Ossicles of endoskeleton are fused into a shell called a test o No arms o Move via spines and tube feet o Ex: sea urchins, sand dollars Preserved and live specimens Class Holothuroidea o Leathery texture, cucumber-like bodies o No arms o Few if any spines o Mouth surrounded by tentacles o Ex: sea cucumbers Preserved and live specimens...
View Full Document
- Spring '08
- Biology, Water vascular system, Sea urchin, live specimens Class, Echinodermata Phylum Echinodermata