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31 Cards in this Set
- Front
- Back
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What is the main difference between Deuterostomes and Protostomes? |
Protostomes- the mouth comes first and originates from the spiral cleavage
Deuoterostomes- the anus may or may not form from the blastopore. Mouth has to be newly formed and comes second. |
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How do Echinodermata intake water? |
through the madreporite |
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What is the name of the fluid reservoir in Echinodermata? |
ampulla |
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What is the scientific name of the tube feet on Echinodermata? |
podia |
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What are the 5 classes under the phyla Echinodermata? |
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What is the common name of Crinoidea? |
feather stars and sea lillies |
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What is the common name for Asteroidea? |
sea stars |
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What is the common name for Ophiroidea? |
basket fish |
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What is the common name for Echinoidea? |
sea urchins (can be heart urchins or sand dollars) |
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What is the common name for Holothuroidea? |
sea cucumbers (the only animal that can regenerate their internal organs) |
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What is the calyx? |
where the mouth is on Crinoidea (center of organism) |
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What are Crinoidea arms covered by? |
Pinnules |
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What kind of fertilization do Crinoidea have? |
external, gametes are released through the rupture |
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What is the larval stage of Crinoidea called? |
free-swimming doliolaria |
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What can Echioderms NOT do? |
osmoregulate |
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What do Echinoderms use the watervascular system for? |
locomotion |
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What is the skeletal support system of Echinodermata? |
Calcareous spicules and ossicles
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Some echinoderms have a ____________-- which is a jaw like pincer for defense and sometimes food capture. |
pedicellarie |
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What do Echinoderms lack? |
an excretory system |
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What kind of nerves do Echinoderms have? |
radial |
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What type of circulatory system do Echinoderms have? |
open circulatory system with cillia |
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What type of body symmetry do Echinoderms have? |
penta-radial |
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What is unique to the Asteroidea class? |
they have extracellular digestion |
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What is the Asteroidea larval form called? |
Bipinarria or Brachiolaria |
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What do the Ophiuroidea use for feeding? |
their tube feet |
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What is unique about the madreporite on the Ophiuroidea class? |
it's on the bottom of the basket fish next to the mouth as opposed to on top where it is on the other organisms |
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What class of Echinodermata uses Bursa? (Bursa is used for gas exchange and gamete release) |
Ophiuroidea |
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What do sea urchins and sand dollars use to eat? (Echinodea Class) |
aristotles lantern |
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What is the free-swimming larval form of Echinodea called? |
Echinopluteus |
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What class of Echinodermata has a "respiratory tree"? |
Holothuroidea |
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What is the free swimming larval form of Holothuroidea called? |
Auricularia |
