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22 Cards in this Set
- Front
- Back
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Infaunal bivalves have developed longer what? |
Siphons |
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'Part of the bivalve where the siphons extend out the shell' |
Anterior |
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'Bivalves that have a single powerful adductor muscle' |
Monomyarian |
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'Part of a bivalve where the foot extends out the shell' |
Posterior |
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Why do shallow burrowers have ribbed growth lines? |
Grip to sediment when burrowing |
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Shallow burrowers have short...? |
Siphons |
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Why do shallow burrowers have an unornamented shell? |
Burrow easily |
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Why do shallow burrowers have large adductor muscles? |
Completely close valves |
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Why do shallow burrows completely close their valves? |
Protection |
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Why do deep burrowers have a large pallial sinus? |
Long siphons |
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Why are deep burrowers unornamented? |
Move easily through sediment |
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Why do deep burrows have small adductor muscles? |
No need to fully close valves |
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Why do deep burrowers have anterior gapes? |
To close valves without retracting siphons |
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Name a shallow burrowing bivalve? |
Cytherea |
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Name a deep burrowing bivalve |
Solen |
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What are the 3 types of feeders for shallow burrowers? |
Suspension feeders Deposit feeders Short retractable siphons |
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Describe deposit feeders siphons and name a species |
Long slender siphons to suck up water Tellina tenuis |
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Name a species of suspension feeders and describe their siphons |
Cardian edule Use short siphons to draw in and expel water |
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Name a species that has short retractable siphons |
Venus |
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What are the 4 features/adaptations of shallow infaunal bivalves |
Equal size large adductors Equivalvier Small pallial sinus Completely close valves |
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Name a species of deep infaunal burrows |
Solen Mya arenia |
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Give 4 features/ adaptations of deep infaunal bivalves |
Elongated shells Gapes in shell Reduced dentition Small adductors |
