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12 Cards in this Set
- Front
- Back
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Gastropoda
1) 2) 3) |
Snails/Slugs
1 part spiral shell well developed head/radula torison |
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99% of snails have a clockwise spiral
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which is right handed called dextral
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Couterclockwise
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Left handed sinistral
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Torsion is
Consequence of torsion |
twisting of internal organs in gastropods
Antifounding lose 1 girll and enlarge the other |
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Prosobranchia
Examples of probranchia |
Typical aquatic snails
Periwinkle (Littorina) man Sail Slipper shells Cone Shells Conch |
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Pulmonata=
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land slugs,
detersion, no shell |
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Opening to the moist mantle cavity
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Pneumestome 1st lung
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opisthobranchia=
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detorsion/no shell
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Cerata
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Nudibranch
combinded gill and defensive structure, cnidocytes stolen from sea anemies. |
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Seahare have
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extended mantle act a fins produce ink
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Cephalopods
1) 2) 3) 4) |
All Carnivores
Tentacles with suction cups beak radula poisonous closed circulatory system with extrahearts |
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Brachial Hearts
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Direct blood to muscles for rapid movement
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