Term
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Definition
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Term
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Definition
1. Gastropoda
2. Bivalvia
3. Polypalacophora
4. Cephlapoda |
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Term
Gastropoda
- shell
- head
- eating
- foot
- guts
- gills
- movement |
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Definition
SANILS, SLUGS, LIMPETS
- 1 shell, no shell
- head present, use tentacles
- radula used to scrape food
- large ventral foot
- torsion of guts
- gills hangover the head area
- crawl using foot |
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Term
Bivalvia
- shell
- head
- eating
- foot
- guts
- gills
- movement |
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Definition
SCALLOPS, CLAMS, OYSTERS, MUSCLES
- two shells
- no head
- no radula---filter feeders
- foot located centrally in shell
- guts are ventrally flattened in shell
- 2 pair of gills on each side
- "flip-flop" and burrow using foot |
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Term
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Definition
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Term
Polypalacophora
- shell
- head
- eating
- foot
- guts
- gills
- movement |
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Definition
CHITONS
- 8 transverse plates/valves
- head area but no eyes
- radula present
- huge ventral foot for anchorage
- guts located btw the foot and the plates
- gills located with guts
- crawl |
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Term
Cephlapoda
- shell
- head
- eating
- foot
- guts
- gills
- movement |
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Definition
OCTOPUS, SQUID, CUTTLEFISH, NAUTILUS
- varies among species, none, internal, present
- large head w/ prominent eyes
- radula present behind beak
- foot modified into tentacles
- guts located in mantle cavity
- 1 par of gills located on each side (nautilus=2 pair)
- jet propulsion using feet or mantle |
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Term
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Definition
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Term
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Definition
1. Polycheata
2. Oligochaeta
3. Hirudinea |
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Term
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Definition
- coelomates
- hydrostatic skeleton
- long bodies made up of segments
- head:
- prostomium (first segment of body)
- mouth
- peristomium (first segment after mouth, part of head)
- pygidium (tail)
- circular and longitudinal muscle
- cuticle
- setae (chaetae, bristles)
- sometimes parapodia |
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Term
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Definition
POLYCHAETE WORMS
- mostly marine
- have fleshy protuberances called parapodium
- 1 pair of parapodium per segment
- parapodium have many bristles
- appendages in the head region
- ex: Nereis sp. (bristle worms)
- to move alternate parapodium pairs one back one forward |
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Term
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Definition
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Term
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Definition
EARTHWORMS
- circular muscle squeezes segments, longitudinal muscle pulls it along
- all segments are used in movement
- chaetae used for gripping |
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Term
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Definition
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Term
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Definition
LEECHES
- have 34 segments always
- no septa
- suckers on both ends |
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