Exam (elaborations)
USABO Biosystematics Test with Complete Solutions
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USABO Biosystematics Test with Complete Solutions Calcarea, Silicea (sponges) - Answer-Lack true tissues; have choanocytes (collar cells-flagellated cells that ingest bacteria and tiny food particles) Cnidaria (hydras, jellies, sea anemones, corals) - Answer-Unique stinging structures (nematocy...
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