Classification Videos cZ_I
Classification Definition Classification: The science of placing living organisms into categories on the basis of their observable characteristics.
Why Classify? Scientists have identified and named about 1.5 million species, they estimate that anywhere from 2 to 100 million remain
Why Classify? To study the diversity of life, biologists use a classification system to name organisms and group them in a logical manner
Why Classify? Taxonomy – a discipline of Biology in which scientists work to classify and assign each organism a name
IB Assessment Statement List seven levels in the hierarchy of taxa—kingdom, phylum, class, order, family, genus and species— using an example from two different kingdoms for each level.
New Frog Species in Borneo Microhyla nepenthicola
Kingdom Phylum Class Order Family Genus Species Animalia Chordata Mammalia Cetacea Balaenopteridae Balaenoptera musculus Plantae Coniferophyta Pinopsida Pinales Taxodiaceae Sequoia sempervirens King Phillip Came Over For Good Supper Blue WhaleCoast Redwood King Phillip Came Over For Good Soup Kissing Pretty Cute Otter Feels Gross Sometimes 9Amit Mishra - NES International School Mumbai
Did King Phillip Come Over For G ood Soup?
Kingdoms Eubacteria Archaebacteria Protista Plantae Fungi Animalia DOMAIN EUKARYA DOMAIN ARCHAEA DOMAIN BACTERIA Section 18-3 THREE DOMAINS Go to Section:
Linnaeus's System of Classification Species and genus are the two smallest categories. Grizzly bear Black bear
Grizzly bear Black bear Giant panda Genera that share many characteristics are grouped in a larger category, the family. Linnaeus's System of Classification
Red fox Grizzly bear Black bear Giant panda An order is a broad category made of similar families. Linnaeus's System of Classification
Black bear Giant panda Grizzly bear Red fox Linnaeus's System of Classification The next larger category, the class, is made of similar orders. Abert squirrel
PHYLUM Chordata Black bear Giant panda Grizzly bear Red fox Abert squirrel Coral snake Several different classes make up a phylum. Linnaeus's System of Classification
Black bear Giant panda Grizzly bear Sea star Abert squirrel Coral snake The kingdom is the largest and most inclusive of Linnaeus's taxonomic categories. Linnaeus's System of Classification
Red fox Grizzly bear Black bear Giant panda Sea star Coral snake Abert squirrel
IB Assessment Statement Outline the binomial system of nomenclature.
Assigning Scientific Names A Swedish botanist, Carolus Linnaeus developed a two-word naming system called binomial nomenclature
Assigning Scientific Names In binomial nomenclature each species is assigned a two-part scientific name 1.Genus – a group of closely related species like Ursus – bears, it is the first word in the species name 2.Species – the second part of binomial nomenclature that is specific to the species
Binomial nomenclature Rules for binomial nomenclature: 1.the first name is the genus name 2.the genus name is capitalized 3.the second name is the species name 4.the species name is not capitalized 5.italics are used if the name is printed 6.the name is underlined if handwritten Homo sapiens, Panthera leo, etc. 23Amit Mishra - NES International School Mumbai
Hierarchy of classification Organisms are classified into the 5 - kingdoms : 1.Prokaryotae, 2.Protoctista, 3.Fungi, 4.Plantae 5.and Animalia. This system uses the five kingdom classification system of Margulis and Schwartz (based on Whittaker), which is found in most textbooks. Amit Mishra - NES International School Mumbai