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Questions and Answers
What characteristic distinguishes Agnatha from other vertebrates?
Which class of fish includes sharks and rays?
What is the primary material used to construct the skeletons of Osteichthyes?
What do Agnatha and Chondrichthyes have in common?
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What is the key difference between Chondrichthyes and Osteichthyes?
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What is a characteristic that all vertebrates in the classes Agnatha, Chondrichthyes, and Osteichthyes share?
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Which class of fish would include species that have both cartilaginous and bony skeletons?
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What is a key difference between lampreys and sharks?
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What do tuna and salmon have in common with sharks?
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Which class of vertebrates includes species that are most closely related to each other?
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Study Notes
Vertebrate Classes
- Agnatha is the first class of vertebrates, characterized by jawless fish such as lampreys and hagfish.
- Chondrichthyes is the second class of vertebrates, comprising cartilaginous fish like sharks and rays.
Fish Classes
- Osteichthyes is the third class of vertebrates, consisting of bony fish such as tuna and salmon that have skeletons made of bone or cartilage.
Vertebrate Classes
- Agnatha is the first class of vertebrates, characterized by jawless fish such as lampreys and hagfish.
- Chondrichthyes is the second class of vertebrates, comprising cartilaginous fish like sharks and rays.
Fish Classes
- Osteichthyes is the third class of vertebrates, consisting of bony fish such as tuna and salmon that have skeletons made of bone or cartilage.
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Description
Learn about the three classes of vertebrates: Agnatha, Chondrichthyes, and Osteichthyes, and the characteristics of jawless fish, cartilaginous fish, and bony fish.
