QQuestionAnatomy and Physiology
QuestionAnatomy and Physiology
What are the characteristics of echinoderms that are unique to them and not found in other phyla?
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Answer
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Step 1I'll solve this problem by discussing the unique characteristics of echinoderms systematically:
Step 2: Radial Symmetry
Echinoderms are the only animals with pentaradial (five-part) symmetry in their adult stage. Unlike bilateral symmetry found in most animals, their body plan is organized around a central point with five identical segments.
Final Answer
1. Pentaradial symmetry 2. Water vascular system 3. Internal calcium carbonate endoskeleton 4. Extensive regenerative capabilities 5. Specialized amoebocyte-based immune response
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