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Blume Ch. 13.4

What are tube-feet? Hollow thin walled tubes that end in a suction cup.
How many species of echinoderms are there? Approximately 6,000 species
Name 3 types of echinoderms Sea stars, sea cucumbers, Sea urchins
How are echinoderms valuable to the environment? They recycle and feed on dead materials
How long do echinoderms date back? 400 million years
What does a water vascular system do? It helps them move, exchange carbon dioxide for oxygen, capture food and release wastes.
How do brittle stars eat? their tube feet help move food particles into their mouth.
Created by: Cole_Fore