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Give a comparative account of arthropoda and echinodermeta |
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Answer» ECHINODERMS: 5-rayed symmetry, mostly radial. Most possess a through gut with an anus. Highly VARIABLE body shape, no HEAD. Open circulatory system, though poorly defined. No EXCRETORY organs. Live in marine environments. Arthropods: Live in every possible habitat. Jointed EXTERNAL skeleton. Pairs of jointed appendages. Bilateral symmetry. |
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