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20 Cards in this Set
- Front
- Back
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What phylum do clams belong to? |
Mollusca |
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How many estimated species of Mollusks are there? |
There are over 50,000 known species |
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Are mollusks lophotrochozoans? |
Yes mollusks are lophotrochozoans |
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What two main body groups do mollusks have? |
Head-foot, visceral mass, and mantle |
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The shell in mollusks is secreted by what structure? |
Mantle |
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What is the rasping structure in mollusks called |
Radula |
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What class are snails and slugs in? |
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? |
Adductor muscles |
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What structure in clams is involved in gas exchange? |
Gills |
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What class to squids, octopuses and nautili belong to? |
Cephalopoda |
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What class of mollusks is the most complex? |
Cephalopoda |
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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? |
Gonads |
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Which tentacle delivers the sperm-packet? |
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What type of skeleton does Mollusks posess? |
Exoskeleton |
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What is the ink sac for? Pen? |
Ink sac: The function of the squid's ink sac is to keep it protected from predators. Pen:The pen of the squid stabilizes the mollusk while it is swimming. |
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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. |
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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 |
Phylum: |
