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20 Cards in this Set
- Front
- Back
What phylum do clams belong to? |
Molluscs |
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How many estimated species of Mollusks are there? |
There are over 50,000 known species of Mollusks |
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Are mollusks lophotrochozoans? |
Yes |
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What two main body groups do mollusks have? |
A Head foot and visceral mass |
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The shell in mollusks is secreted by what structure? |
The mantle |
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What is the rasping structure in mollusks called |
The Radula |
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What class are snails and slugs in? |
The Class Gastropoda |
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What class are clams and mussels in? |
Bivalvia |
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What are the muscles in clams responsible for closing the shell? |
hinge ligament |
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What structure in clams is involved in gas exchange? |
One or two gills in mantle cavity |
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What class to squids, octopuses and nautili belong to |
Cephalopod |
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What class of mollusks is the most complex? |
Cephalopod |
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Which class of mollusks are the only ones with closed circulatory systems? |
Cephalopods |
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What cells in cephalopods are pigmented? |
Chromatophores |
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Sperm-packets of cephalopods are called? |
Coleoidea |
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Which tentacle delivers the sperm-packet? |
The two tentacles |
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What type of skeleton does Mollusks posses? |
Bilateral |
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What is the ink sac for? Pen? |
Is a defense mechanism to use against there predators, to escape without being harmed. |
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How do squid locomote? |
A squid moves using a system of jet propulsion, pulling water into its mantle cavity, contracting the muscles of the mantle wall and expelling the water through its siphon or funnel. Its fins aid maneuverability and also help with lift and motion while the squid travels at slow speeds. |
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List all the classes from the PPT in the phylum Mollusks, give identifying characteristics of each class. Also give an example of an animal e.g. Chitons |
Animal Diversity 3 includes snails, slugs, clams,scallops, oysters, cuttlefish, squid, octopus. Animal Diversity 3 Seven classes of mollusks - Fourclasses covered here Class Polyplacophora - chitonsClass Gastropoda - Snails, slugs, limpetsClass Bivalvia - Clams, oysters, scallopsClass Cephalopoda- Squids, octopus, cuttlefishes, Nautilus |