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26 Cards in this Set
- Front
- Back
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what are echinoderms categorized for? |
spiny skeletons |
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adult symmetry |
radial |
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larvae symmetry |
bilateral |
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what is their endoskeleton made of? |
calcium |
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skeletal structure is made of what? |
plates |
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what are the plates called? |
ossicles |
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what are the ossicles joined together by? |
catch connective tissue |
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what does the catch connective tissue allow? |
to change from being flexible to stiff/rigid and vise versa |
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what kind of vascular system do they have? |
water vascular |
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what does the water vascular system operate by? |
changes in water pressure |
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what does this system allow the exchange of? |
gasses( CO and O ) ( 2 2 ) |
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helps capture what? |
food |
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how does it get rid of wastes? |
excretes |
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what does this system allow? |
movement |
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this system is apart of what other system? |
circulatory system |
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is their circulatory system open or closed? |
open |
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reproduction? |
sexual with a very few asexual |
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what are asteroidiea's form of reproduction |
asexual using regeneration |
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what type of nervous system do they have? |
varies greatly |
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what do they not have? |
brain or head and most do not have sensory organs |
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what do they have? |
central nerve ring |
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what can they detect? |
light and touch |
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what is the sensory organ in sea stars called? |
eyespot |
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where are the eyespots located? |
tips of the rays |
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what are the eyespots used for? |
to detect light intensity |
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what are the classes? |
-sea stars -brittle stars -sea urchins -sea cucumbers -sea lilies -sea daisies |
