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Created with Fabric.js 1.4.5 What are the most useful characters that are used to classify organisms? How are living organisms classified? Taxonomic Classification of Living Organisms Commonwealth Organisms are classified for the single purpose of better understanding them. Thanks to taxonomy we can easily identify and learn about any kind of organism that exists in our planet, we can conclude that the main objective of taxonomy is to order accurate information about all different organisms. Now a days taxonomists classify living organisms into natural groups, which are the groups of living organismsthat share a evolutionary history, this means that they may share a common ancestor. Whit this data taxonomists can create a phylogeny or "family tree". The Domain is one of the most recent taxonomic levels,it is divided in three, Bacteria, Archaea and Eukarya.It is based on cellular differences (prokaryotes and eukaryotes) The most useful characters for classifiying are morphological and molecular. Kingdom: There are six kingdoms, animalia, plantae, fungi,protista, archaea and bacteria. Phylum: The members of a specific phyla have anatomic similarities and a common ancestor. In the case of plants the meaning of phylum is division.Suffixes: phyta and mycota. Class: The class is between phylum and orders, just that orders are part of the division of classes.The suffixes for class are: opsida, phyceae and mycetes Species: Kind of the most specific level of classification the maincharacteristics are that the organisms can inbreed between themselvesand have healthy offsprings.In case of asexual organisms they are defined by their body shape. Genus: It is the way of showing how close organisms are to each other, in fact the firts part of the scientific name of species is given by de the genus.For example both lions and tigers are part of panthera genus. Family: Are between genus and class, there are insidethe taxon of family, sub taxons called superfamily and sub family.The suffixes for families are aceae and idae Order: Bigger grouping than family or genus, but more specific than class. Suffix: ales