Classification of Living things (Taxonomy)
In science, the practice of classifying organisms is called taxonomy which is gotten from two words (Taxis which means arrangement and nomos which mean method). So, you can say that taxonomy is the method of arrangement. The modern taxonomic system was developed by the Swedish botanist Carolus Linnaeus (1707-1778). He used simple physical characteristics of organisms to identify and differentiate between different species and is based on genetics.
Linnaeus developed a hierarchy of groups for taxonomy. To distinguish different levels of similarity, each classifying group, called taxon (pl. taxa) is subdivided into other groups. To remember the order, it is helpful to use a mnemonic device (Do Kings Play Classic Or Fun Genie Songs).
The taxa in hierarchical order:
- Domain – Archaea, Eubacteria, Eukaryote
- Kingdom – Plantae, Animalia, Fungi, Protista, Monera
- Phylum – Invertebrates, Vertebrates
- Class – Fish, Bird, Mammal, Amphibian
- Order – The Organism get its Energy?
- Family – Special characteristics of the Organism and its relatives
- Genus – First name of Organism
- Species – Last name of Organism
The domain is the broadest category, while species is the most specific category available. The taxon Domain was only introduced in 1990 by Carl Woese.
They are five Kingdoms and they are Plantae, Animalia, Fungi, Protist, Monera. To remember this, use the mnemonic “people always find problems with me” all these words except with will help you remember the five kingdoms easily.