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14 Cards in this Set
- Front
- Back
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What is the Symmetry Of Bivalves |
They are Bilaterally Symmetrical on a plane which passes between the valves |
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True or False; Their Valves are Different Sizes? |
False. they have two valves; left and right, they are identical. |
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True or False; Their shells are made of Calcite |
True. They are also partly Organic in three layers. |
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How does the bivalve keep its valves closed? |
They have a pair of Adductor Muscles, which contract to keep them closed. |
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True or False. They Use as Muscle called the Diductor to open the valves |
False. The Adductor Muscles relax which allows the ligament to open the valves. |
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What is the Umbo on a Bivalve? |
It is the part of the shell which forms first, and it lies in front of the ligament on both valves. |
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What is the foot used for? |
movement and digging |
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Where is the pedicle located on a Bivalve? |
bivalves do not have a pedicle. |
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What does the Bivalve use respirate and feed? |
The Gills |
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Where are the teeth and sockets located? |
along the hinge plate |
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What are the Teeth and Sockets used for? |
They are opposites which fit over each other and are used to keep the structure stable. |
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What are Siphons? |
They are a soft tissue which take in and filter fresh water, they also remove the waste water. |
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How is the Shell created? |
It is secreted by the mantle. |
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What is the Mantle? |
part of the soft tissue inside the bivalve, it creates the shell. |
