33.3 - • Lactate-milk • Evolutionary success of birds...

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33.3 Deuterostomes evolved in marine environments o Echinoderms o Hemicichordates o Urochordates o Cephalochordates Tetreapods o live on land o use jaws adapt to get food/prey o use limbs to move evolved from fish fins o Reproduction Amniotic egg Shells to minimize water lose Allowed reptiles and mammals to produce in terrestrial enviroments Placenta Vivparious Remains inside of body Organ that gives flow of O2 and nutrients from mom to offspring Few offspring Elaboration of parental care Parent improving ability for offspring to survive Heavy in mammals and birds
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Unformatted text preview: • Lactate-milk • Evolutionary success of birds and mammals • Most diverse o ray-finned fishes o terapods o vertebrates • Echinoderms o Feeding unique to marine animals o Suspension, deposit feed, harvest algae o Podia Traps particles during suspension feeding Pry open bivalve shells • Vertebrates o Natural selection acted on mutations of gill arches o Ray finned Protrusible jaw- extend o Pharyngeal jaw- modified gill arches that function as a second set of jaws...
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This note was uploaded on 04/18/2008 for the course BIOL_SCI 103 taught by Professor Galbreath during the Spring '08 term at Northwestern.

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33.3 - • Lactate-milk • Evolutionary success of birds...

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