Transcript Canis lupus
Living things What Is Life? Life Comes From Life Francesco Redi designed one of the first controlled experiments. In his experiment, Redi showed that flies do not spontaneously arise from decaying meat. What Is Life? Life Comes From Life Louis Pasteur’s carefully controlled experiment demonstrated that bacteria arise only from existing bacteria. Redi’s and Pasteur’s Experiments http://www.phschool.com/webcodes10/ind ex.cfm?wcprefix=cep&wcsuffix=1011&area= view&x=17&y=20 What is taxonomy? Taxonomy is the branch of biology concerned with the grouping and naming of organisms Biologists who study this are called taxonomists Why classify? To To help us study the earth help us organize all the species we discover . . . To give every species a name based on a standard method so scientists from different countries can talk about the same animal without confusion It is always written in the Latin Language Genus… A genus consists of a group of closely related species Other animals in the Canis group include dogs and coyotes The genus name is always Capitalized Species... A species consists of animals that can mate and produce fertile offspring Only wolves are known as lupus. The species name is always lowercase An animal is known by two names… Canis lupus is the scientific name for a gray wolf. Canis is the genus name lupus is the species name This system uses a binomial nomenclature Binomial Nomenclature Bi means two Nomen means name A binomial nomenclature is a classification system using two names to identify an organism Who is Carolus Linnaeus? Carolus Linnaeus was a Swedish botanist Developed a 8-level (taxa) classification system based on similarities between organisms Aristotle and Classification Many hundreds of years before Linnaeus, a Greek scholar named Aristotle developed a classification system for animals. Aristotle first divided animals into those he considered to have blood and those he did not. This graph shows Aristotle’s classification system for “animals with blood.” Inferring: In Aristotle’s classification, where would a cow be classified? A whale? Predicting: Would Aristotle’s classification system be used today? Explain. The Eight Level System Domain Kingdom Phylum Class Order Family Genus Species Dumb Kids Playing Catch On Freeways Get Squashed Classification of Humans Domain: Eukarya ---------------------- (Dumb) Kingdom: Animalia -----------------------(Kids) Phylum: Chordata ----------------------(Playing) Class: Mammalia --------------------(Catch) Order: Primata Family: Hominidae Genus: Homo -------------------(On) ----------------(Freeways) ----------------(Get) Species: Homo sapiens---(Squashed) How does it work? There are 6 broad kingdoms Every living thing that we know of fits into one of the six kingdoms Each level gets more specific as fewer organisms fit into any one group A Sample Classification The lion belongs to the following groups: Kingdom Animalia (includes all animals) Phylum Chordata (includes all vertebrate animals, as well as some other more primitive ones) Class Mammalia (includes all mammals) Order Carnivora (includes carnivorous mammals, from bears to raccoons to harbor seals) Family Felidae (includes all cats) Genus Panthera (includes the great roaring cats: lions, tigers, jaguars, and leopards) Species leo (lions!)