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25 Cards in this Set
- Front
- Back
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Radula |
A rasping tongue like organ that is found in all mollusks except bivalves |
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Lions Mane |
The largest known species of jellyfish |
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Valve |
Another term for a mollusks shell |
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Darwin |
The father of evolution |
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Dimorphism |
Term referring to organisms with two different body forms |
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Trochophore |
The free swimming larvae that emerges from the egg in many mollusks |
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Ephyrae |
Immature eight armed free swimming medusae formed from strobilization |
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Redwood |
The nickname of the giant barrel sponge |
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Gemmules |
Internal bids which can help sponges survive harsh conditions; a type of asexual reproduction |
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Osculum |
Exit opening at the top of a sponge |
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Prismatic |
The middle layer of the mollusks shell |
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Spicules |
Needle like structures that make up the skeleton of many sponges |
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Ctenedia |
Modified gills presented in many aquatic mollusks; feathery or comb like structures used for respiration |
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Adductor |
Strong muscles which extend between the shells to tightly hold a bivalves shell closed |
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Cephalopoda |
Distinct head, ex - squid |
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Asconoid |
The simplest sponge body form in which choanocytes lie in a large chamber called spongecoel |
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Calcarea |
Class of sponges in which the spicules have 3 or 4 rays |
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Soft |
The term mollusks means this |
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Sessile |
Adult sponges that can’t move are referred to as sessile |
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Ocelli |
Sensory structures used for light reception |
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Radial |
Sea anemones have this type of symmetry |
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Asymmetry |
Sponges have this type of symmetry |
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Evolution |
When things change over massive expanses of time due to random mutations |
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Stomach foot |
Gastropod |
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Mantle |
A membranous sheath of skin extending down on each side of the body , protecting the soft parts |
