find the general characters of mollusca and ecinodermata?
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The characteristics of the Phylum Mollusca:
- They are bilaterally symmetrical
- Their body is soft and unsegmented
- They have open circulatory system.
- They have hard shell or a mantle
- There is a foot that is used for moving around.
eg: Snails, Pila
The characteristics of the Phylum Echinodermata
- They are aquatic or marine animals
- They are triploblastic
- They have a coelomic cavity
- They use peculiar water driven tube system for moving around
- They have hard calcium carbonate structure that they use as a skeleton.
eg: Starfish, Sea Urchin
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