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12.8: Fish Evolution and Ecology

Difficulty Level: At Grade Created by: CK-12
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Vocabulary

cartilaginous fish

Ectothermic fish with an endoskeleton made of cartilage; have a complete backbone and jaw.

gills

Organs in aquatic organisms composed of thin filaments that absorb oxygen from water.

lobe-finned bony fish

Ectothermic fish with a backbone and jaw; endoskeleton is made of bones; have thick, fleshy fins.

ray-finned bony fish

Ectothermic fish with a backbone and jaws; endoskeleton is made of bones; have thin, bony fins.

predator

Species that consumes another in a predator-prey relationship.

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Difficulty Level:
At Grade
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Date Created:
Feb 24, 2012
Last Modified:
Aug 28, 2016
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