330 likes | 909 Views
Levels of Classification. Linneaus ’ Classification System. Based on a hierarchical classification that has seven main levels or taxa Kingdom Phylum Class Order Family Genus Species. general. specific.
E N D
Linneaus’ Classification System • Based on a hierarchical classification that has seven main levels or taxa • Kingdom • Phylum • Class • Order • Family • Genus • Species general specific
Taxon (taxa plural) = a named group of organisms such as phylum Chordata or order Rodentia • Rank = a level in a classification scheme, such as phylum or order
A Closer Look at the Kingdoms • First classification system was based on plants and animals • With the aid of microscopes, new organisms and cell types were discovered • Now a two-kingdom system is no longer useful • In this course we will use the six Kingdom system: • Bacteria • Archaebacteria • Protista • Fungi • Plants • Animals
A Closer Look at the Kingdoms • In this course we will use the six Kingdom system: • Eubacteria • Archaebacteria • Protista • Fungi • Plants • Animals
How are organisms divided into kingdoms? • The MAIN characteristics used to divide organisms into kingdoms are: • Cell type, complex or simple • Their ability to make food (nutrition) • The number of cells in their body (multicellularity) • How they reproduce • Presence/absence and type of a cell wall • Habitat
Review of cell types • Eukaryote versus Prokaryote cells – can you see the difference?
Kingdom Eubacteria Helicobacter pylori
Kingdom Archaebacteria Halobacterium
Guess that Kingdom • What Kingdom do I belong to? • Animalia Charaxesbrutusnatalensis
Guess that Kingdom • What Kingdom do I belong to? • Protista Paramecium
Guess that Kingdom • What Kingdom do I belong to? • Plantae Athyriumfilix-femina
Guess that Kingdom • What Kingdom do I belong to? I live in this hot spring ? • Archaebacteria
Guess that Kingdom • What Kingdom do I belong to? • Fungi Amanita muscaria
Guess that Kingdom • What Kingdom do I belong to? • Eubacteria Hyellastella
Dichotomous Keys • a series of branching “either / or” choices designed to classify specimens