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Stack #1250566
chapter 33.5
| Question | Answer |
|---|---|
| deutrerostomes has these traits: endoskelton made of calcareous plates secondary pental-radial symmetry specialized water vascular system secondary stages and are slow moving or sessile marine animals | Echinoderms |
| these are starfish or sea stars | Class: Asteroidea |
| where are the digestive organs and gonads located on sea stars | the arms |
| what the tube feet used for in sea stars | locomotion and water vascular system |
| what are the predators of sea stars | mollusks |
| loosely fused to allow for flexibility but can become tight and locked arms connected to central disk | endoskelton of sea stars |
| used for filtering water in the water vascular system | maderporite |
| these are the brittle stars | Class: Ophioroidea |
| has a defined central disk and slender arms | brittle stars |
| what are the tube feet used for on brittle stars | sensory function since they lack suckers |
| what does it not have | a water vascular system |
| sea cucumbers are in what class | Class: holothuroidea |
| these have soft bodies, skeleton plates embedded in body walls, elongated bodies, lacking arms, tentacles around mouth, and called "vacuum cleaners" | class: holothuroidea |
| tentacles around mouth are modified what? | tube feet |
| sea urchins and sand dollars | class: echinoidea |
| clacareous plates are fused to form rigid skeleton may have spines (protection) tube feet form 5 symmetrically placed rows along body | class: Echinoidea |
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olardas0416
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