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Caroline Harper

Blume Ch.13.4 Echinoderms

What do echinoderms have that is hard and covered by a bumpy or spiny epidermis? Endoskeleton
What kind of symmetry do they have? Radial
What do they have around the mouth? nerve ring
What is the system that is a network of water-filled canals connected to thousands of tubed feet? Water Vascular System
What does the system allow them to do? Move, exchange carbon dioxide and oxygen, capture food, and remove wastes
About how many specie exist of the echinoderms? 6,000
They can ______ a lost arm. Regenerate
What allow predators to break off an arm, while the brittle star escapes; they quickly regenerate the lost parts? Sea Stars
What are disk- or globe-shaped animals covered with spines? Sea Urchines and Sand Dollars
What are soft-bodied with a leathery covering? Sea Cucumbers
What do echinoderms help do to materials? recycle
They date back to how many million years? 400
Created by: andreaharper