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Animal Diversity > Fish 2 > Flashcards

Fish 2 Flashcards

1
Q

What are the main characteristics of Gnathostomata?

A

Jaws
Paired appendages
Gill arches
Teeth

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2
Q

What is the origin of teeth?

A

Modified dentine tubercles concentrated and elongated around the mouth

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3
Q

In which class do sharks, rays and skates belong?

A

Chondrichthyes

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4
Q

Name some characteristics of Chondrichthyes

A 
True bones are absent
Rowed teeth
Placoid scales
Absence of swim bladder
Large liver
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5
Q

What are a sharks main senses?

A

Large olfactory organs (1 part/10 billion
Neuromasts detect vibrations
Close range vision (sharp but not colour)
Electroreceptors detect bioelectric fields (ampullae of Lorenzini

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Animal Diversity (13 decks)

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