160 likes | 277 Views
Organizing Life’s Diversity. Chapter 17. What Your Book Says. What You’ll Learn You will identify and compare various methods of classifications You will distinguish among six kingdoms of organisms Why It’s Important
E N D
Organizing Life’s Diversity Chapter 17
What Your Book Says • What You’ll Learn • You will identify and compare various methods of classifications • You will distinguish among six kingdoms of organisms • Why It’s Important • Biologists use a system of classification to organize all living things. Understanding classification helps you study organisms and their evolutionary relationships
Classification Classification Section 17.1 NCSCOS: 4.01
How Classification Began • Classification systems help to organize vast amounts of information • Allows you to find things more quickly • Helps you to understand them better • Taxonomy-branch of Biology that is concerned with classification of organisms
Aristotle’s System • (348-322 B.C.) Greek Philosopher • Classified organisms into two groups • Plants • Shrubs, herbs and trees • Animals • Habitat and physical differences
Carolus Linnaeus’s System • (1707-1778) Swedish botanist • Binomial Nomenclature • Created classification system that is still used today • Used genus and specific epithet to classify and name organisms
Common and scientific names Common names can be misleading Animal can have different common names through out the world Example: Common Name : Guinea Pig Also called cavy Scientific name: Caviaporcellus
Modern Classification General • Based on seven levels • Levels go from general to specific • Organisms that share levels are more closely related • Kingdom • Phylum • Class • Order • Family • Genus • Species • King Phil Cares Only For Good Spaghetti Specific
Comparison Genus Felis Species Feliscatus
The Six Kingdoms 17.2 NCSCOS: 4.01
Evolutionary Relationships • Determined by: • Structural similarities • Breeding behaviors • Geographical distribution • Chromosome comparison • biochemistry
Models of Classification • Scientists can use classification to try and determine if organisms share a common evolutionary ancestor • Phylogeny = evolultionary history of an organism • Cladistics – classification system based on phylogeny – shared derived characteristics
Six Kingdoms of Organisms • Archaebacteria • Eubacteria • Protists • Fungi • Plantae • Animalia