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Questions and Answers
The colossal squid is the world's largest mollusk, measuring up to almost ______ feet long.
The colossal squid is the world's largest mollusk, measuring up to almost ______ feet long.
50
There are approximately ______ living species and probably 70,000 extinct species of mollusks.
There are approximately ______ living species and probably 70,000 extinct species of mollusks.
160,000
Mollusks are typically divided into ______ classes, of which two are extinct.
Mollusks are typically divided into ______ classes, of which two are extinct.
ten
Cephalopods are thought to be the most ______ of invertebrates.
Cephalopods are thought to be the most ______ of invertebrates.
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Bivalves include clams, scallops, oysters, and mussels, and have ______ parts to their shell.
Bivalves include clams, scallops, oysters, and mussels, and have ______ parts to their shell.
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Study Notes
- The colossal squid is the world's largest mollusk, measuring up to almost 50 feet long.
- There are approximately 160,000 living species and probably 70,000 extinct species of mollusks.
- Mollusks are typically divided into ten classes, of which two are extinct.
- The major classes of living mollusks include gastropods, bivalves, and cephalopods.
- Gastropods include snails and slugs, and have a well-developed head.
- Bivalves include clams, scallops, oysters, and mussels, and have two parts to their shell.
- Cephalopods include the octopus and squid, and have a prominent head and a well-developed brain.
- Cephalopods are thought to be the most intelligent of invertebrates.
- Mollusks have different habitats, from gardens to deserts, rivers, lakes, and the ocean.
- Mollusks have different feeding strategies, from capturing food with gills to being active and efficient predators.
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