Endoskeleton in Echinoderms consists of......... Group of answer choices cartilage vertebrae ossicles tube feet madreporite
Added by Christine K.
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Echinoderms, such as starfish and sea urchins, have a unique internal skeleton. Show more…
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Which of the following are synapomorphies of the Echinodermata? Possess an endoskeleton comprised of calcareous ossicles formed from mesoderm. Possess a water vascular system consisting of fluid-filled canals that service podia (tube feet). Ossicles are fused to form a rigid structure called a "test". Connective tissue is highly mutable, capable of rapid changes in rigidity. Adults possess five-pointed radial symmetry. Arms extend from a central disc.
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