Sept 30-08 - Introduction to Animals Lecture

Sept 30-08 - Introduction to Animals Lecture - Josh Bovard...

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Josh Bovard Biology 111 – Tuesday, September 30 th , 2008 Professor Donald Kramer I NTRODUCTIONS TO A NIMALS Animal Characteristics : An animal is Eukaryotic ‘true’ nucleus Membrane-bound organelles Heterotrophic ‘different feeding’ Get energy and carbon from organic materials brought in by ingestion May be filter feeders, predators, herbivores, parasites, or detritivores Most animals have an internal gut that permits the digestion of foods Changes from bacteria, amoebae, euglenoids, water molds and fungi which have vesicles/vacuoles Lack cell walls Have alternate types of structural support Hydrostatic Skeleton Fluid-filled cavity acted upon by muscles Exoskeleton External Non-living Does not grow with animals Moulting animals (most insects) are ecdysozoans Endoskeleton Internal Mostly in vertebrates (some invertebrates will have non-living endoskeleton, CaCO 3 ) Motility All animals are motile at some time in their life 1
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Sept 30-08 - Introduction to Animals Lecture - Josh Bovard...

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