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11 Cards in this Set
- Front
- Back
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what are 5 examples of echinoderms?
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1.sea cucumbers
2.feather stars 3.brittle stars 4.star fish 5.sea urchins |
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what is the key characteristic trait of echinoderms?
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spiny skin
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do echinoderms have an endoskeleton or an exoskeleton?
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endoskeleton with a thin layer of skin on it
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describe echinoderm locomotion
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driven by water pressure=water vascular(water goes in a lil pore in the center)
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what kind of tissue do they have?
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catch connective that allows them to change from completely rigid to completely pliable
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what does cephalization allow for?
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bilateral symmetry
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what are asterodea?how man arms can they have?
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-star fish
-5 or more |
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what kind of predators are asteroidea? what kind of prey do they eat?
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-pusuit predators
-things that dont hae eyes(cnidarians, poriferas) |
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what are echinoidea? what kind of symmetry do they have at their adult stage?
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-sea urchins
-pentaradial |
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what kind of symmetry do asteroidea have?
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pentaradail
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why is imporntant to note about symmetry in the echinoderms>
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all adult echinoderms are not bilaterally symmetric at their adult stage but they are bilateral at some stage in their life
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