Biodiversity notes

Biodiversity notes - BIOLOGICAL DIVERSITY Biodiversity...

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BIOLOGICAL DIVERSITY Biodiversity (biological diversity) -variety and variability of species, genes and ecosystems. Named by E O Wilson. Types of organisms Prokaryotes: cells do not have membrane bound organelles, e g bacteria Eukaryotes: cells have a distinct nucleus, membrane bound organelles. Taxonomy Basic taxonomic unit, each distinct type of organism = species Scientific name: Genus species ( Taraxacum officianale - Dandelion) Hierarchy of taxa: kingdom, phylum, class, order, family, genus, species Classification Why classify? To make sense of diversity. Classification is not fact, can change Criteria for classification: cell type, trophic level, reproduction and development, general structure and function Currently all organisms are placed into 5 kingdoms based on phylogeny Monera: single celled prokaryotic organisms; bacteria, cyanobacteria Protista: (mostly) one celled eukaryotic organisms; Paramecium, Amoebas, protozoan and “algae” Animalia: multicellular, eukaryotic, heterotrophic, all or part motile. Invertebrates (mollusks, arthropods) and vertebrates ( fish, reptiles,
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This note was uploaded on 08/04/2008 for the course ENST 048 taught by Professor Gray during the Fall '04 term at UNC.

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Biodiversity notes - BIOLOGICAL DIVERSITY Biodiversity...

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