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Classification of Living Things

Science
by

Jack McMillan

on 8 April 2013

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Transcript of Classification of Living Things

Classification of Living Things By: Jack McMillan Branching diagrams show
biological relationships Classification systems change
as scientists learn more The two most familiar
kingdoms Other organisms make up
four more kingdoms Branching diagrams have
helped scientists Scientists develop systems for
classifying living things Carolus Linnaeus was a scientist who lived in Sweden in the
mid-1700s Scientists compare a variety of traits to classify organisms Scientists compare bones of extinct species with bones of modern
living species Scientists use diagrams to show the relationships they discover
using physical and genetic evidence Carolus Linnaeus put all of the species he knewn into two large
groups: Plants and Animals Protista are large, complex cells with true nuclei, that are uni and
multicellular Scientists provide a key for
identifying species Linnaeus named more than
11,000 species Organisms can be classified
into seven levels Taxonomists study biological
relationships Physical and Genetic
Evidence Branching diagrams show
how organisms evolved Scientists use similarities and differences to classify organisms Scientists have created a method used to identify species of organisms A dichotomous key is an identification tool that gives a series of choices The choices can focus on any trait that shows differences between
species Taxonomy is the science of naming and classifying organisms Linnaeus' system for naming species was called bionomial
nomenclature, and are usually Latin terms A genus is a group of species that have similar characteristics The science of taxonomy is related to the greek meaning taxis A taxon is a group of organisms that share certain traits Taxa is plural for taxon, but taxa can be broad like animals
and plants The more traits two species share, the more closely related they are Scientists can compare the genes in one organism to the genes in
another In the early 1950s scientists found that genes are made of DNA and
that DNA stores coded information Branching diagrams show when organisms shared common ancestors Cladograms focus on traits that tie together through history A derived characteristic is a trait that has been changed from its
ancestral condition through evolution Plants are grouped into three main types: Bryophytes, Vascular
seed plants, and Vascular seedless plants Animals are classified by their body types, which are either
invertebrates and vertebrates These two kingdoms include many common living things, but
also include many unfamiliar organisms Water Plants Animals Humans Elephants termites Ducks Fish worms Horsetails Bristlecone Pine orchids Roses Trees rosemary air Attributes nutrients adaptive The Six Kingdoms Fungi are known for turning their food into chemicals, then absorbing,
or taking in that food Bacteria are known for spreading and multiplying, and even for
causing diseases or illnesses Acrchaea can live in extreme conditions such as boiling mud
near geysers Kingdom Fungi Protista Bacteria Archaea
Full transcript