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In Echinodermata, Class ___________ have 5 or more arms extending from a central disc. They can't regenerate a single arm.
In Echinodermata, Class ___________ have 5 arms set off from the central disc. This includes brittle stars and basket stars and they have no anus.
In Echinodermata, Class Crinoidea includes _________ _________ and ________ _________
Sea lilies, Feather stars
In Echinodermata, Class Concentricycloides are called ______ _______ that live in deep water.
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