(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.
Basic taxonomic unit, each distinct type of organism = species
Scientific name: Genus species
Hierarchy of taxa: kingdom, phylum, class, order, family, genus, species
Why classify? To make sense of diversity. Classification is
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,