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21 Cards in this Set
- Front
- Back
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what does the word echinoderm mean?? |
SPINY SKIN |
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What type of symmetry do echinoderms have? |
Radial. (pentaradial) |
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What is the function of the madreporite? |
It draws in water and expels it too fuel its water vascular system. (also known as the Sieve Plate) |
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What is the function of the ampullae? |
They store water that enter the vascular system and send it to the tube feet for locomotion. |
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What is unique about the sea star genders? |
They can change genders to better adapt to their environment. |
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What do sea stars eat? |
Clams and Mussels |
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What do brittle stars eat? |
Decaying matter and plankton. |
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Describe the side of the sea star that the mouth is on. |
The ORAL side. You can find the tube feet, ambulacral groove and mouth. |
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What typ elf waste do sea stars expel? |
AMMONIA. |
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What is the hemal system? |
The circulatory system that distributes nutrients through out the body. |
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What is the function of the pedicellariae? |
It is a defensive organ present in large number of echinoderms. |
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What class do basket stars belong to? |
Ophiuroidea. |
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What structures do sea stars use for locomotion? |
Tube feet (suction to move). |
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What class do sea cucumbers belong to? |
Holothuroidea |
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What echinoderm contains venom that may be deadly to humans? |
The flower urchin contains deadly paralytic venom that has killed many people in japan. |
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What fluid is located in the vascular system of echinoderms? |
WATER |
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What class has toxins that discourage predators? |
Holothuroidea or echinodea. |
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What structure do sea cucumbers use to breathe? |
anus |
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What class do sea lilies belong to? |
crinoidea |
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What are the most primitive class of echinoderms? |
crinoidea |
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Attached crinoids are called? |
SEA LILLIES. |
