Biology 1104 how organisms allocate resources

Biology 1104 how organisms allocate resources - Lecture 21:...

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Lecture 21: How Do Organisms Obtain and Allocate Resources? Tuesday April 12 th , 2011 Theory of Evolution by Natural Selection - Variation exists - Some of this variation is heritable (coded for by genes that are passed from parent to offspring) - More offspring produced than can possibly survive-setting up struggle for existence - Individuals with favorable variations survive better, leave more offspring - In next generation, more individuals will possess favorable variations. “The Game of Life” - All living things play - Compete for resources to grow, survive and reproduce - Winners are those who put more offspring into the next generation What resources do organisms need to survive and reproduce? - Carbon - Oxygen (most, excludes some extremophiles) - Sunlight (photoautotrophs) - Water - Habitat/space - Since resources are limited it matters (influence how you compete for resources): o where you live o who you interact with - Ecologists study: o distribution of organisms o abundance of organisms
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This note was uploaded on 01/19/2012 for the course BIOL 1104 taught by Professor Stanger-hall during the Spring '08 term at University of Georgia Athens.

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Biology 1104 how organisms allocate resources - Lecture 21:...

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