Notes SPI 0807 5 1 Classification Keys Science

Notes SPI 0807. 5. 1 Classification Keys Science Tennessee SPI Objective: Use a simple classification key to identify an unknown organism. Essential Question(s) Instructions for Students How do I use… 1) sure you view this in slideshow mode. 1)Make …a dichotomous key topresentation identify an organism? 2) find instructions how do this by doing a 2)You …a can classification table to about identify anto organism? Google search or by 3) …a flow chart to searching identify an. You. Tube. organism? 3) you have it in slideshow mode, press the right-arrow 4)After …a branch diagram to identify an organism? keyboard button to advance through the presentation. Success Criteria 4) If you need help, please communicate with your teacher. I can… 1) …identify an organism with a dichotomous key. 2) …identify an organism with a classification table. 3) …identify an organism with a flow chart. 4) …identify an organism with a branch diagram.

Notes SPI 0807. 5. 1 Classification Keys Science Classification and Classification Keys Ø Before we investigate classification keys, it is helpful to first examine some general classification concepts. Starting with… Taxonomy ØTaxonomy is the science of defining, naming, and classifying organisms. Ø Organisms are classified according to similar physical and genetic characteristics.

Modern Taxonomy 8 Levels of Classification Categories go from broad to narrow Broad 1) Domain 2) Kingdom 3) Phylum 4) Class 5) Order 6) Family 7) Genus 8) Species Narrow

8 -Level Classification System Ø Categories go from broad to narrow Example: Location of Rock Springs Middle School 1) The Universe 2) Milky Way Galaxy 3) Solar System 4) Planet Earth 5) North America 6) United States of America 7) Tennessee 8) Smyrna Broad Narrow

Classification Levels Memory Trick 01 Did 1) Domain King 2) Kingdom Phillip 3) Phylum Come 4) Class Over 5) Order 6) Family 7) Genus 8) Species From Great Spain?

Classification Levels Memory Trick 02 Donkey 1) Domain Kong 2) Kingdom Puts 3) Phylum Children 4) Class On 5) Order 6) Family 7) Genus 8) Species Flying Giant Squirrels

Classification Criteria Ø In taxonomy organisms are classified according to similar physical and genetic characteristics. Example 01: At the Domain level -organisms are classified according to whether or not their cell(s) contains a nucleus. Prokaryotic Cell (no nucleus) Eukaryotic Cell (has a nucleus)

Classification Criteria Ø In taxonomy organisms are classified according to similar physical and genetic characteristics. Example 02: At the Class level -organisms are grouped according to similar physical characteristics. Classes of Animals

Notes SPI 0807. 5. 1 Classification Keys Science Binomial nomenclature Ø Around 1735 Carolus Linnaeus created a two-part naming system called binomial nomenclature. Note: In Latin “bi” means two and “nomial” means name Ø Uses the last 2 classification levels (Genus and Species) to name an organism. Example: Human Beings Genus: _____ Homo Species: _____ Sapiens

Notes SPI 0807. 5. 1 Classification Keys Science 8 -Level Classification System Example: Human Beings (Homo Sapiens) 1) Domain: Eukarya 2) Kingdom: Animalia 3) Phylum: Chordata Binomial Nomeclature 4) Class: Mammalia 5) Order: Primates 2 part naming system 6) Family: Hominoidia 7) Genus: Homo 8) Species: Sapiens 1 st part 2 nd part

Example: Wolves Canis Genus: _____ Species: _____ lupus Example: Domesticated Dogs Canis Genus: _____ familaris Species: _____ Example: Domesticated Cats Felis Genus: _____ Species: _____ catus Example: Bottlenosed Dolphins Tursiops Genus: _____ Species: _____ truncatus

Review Questions Classification: General Concepts 1) What is taxonomy? (slide 2) 2) What is binomial nomenclature? (slides 9 & 10) 3) What are the 8 levels of classification? (slide 3) 4) Which 2 levels are used for scientific names? (slide 9) 5) What is the scientific name for humans? (slides 9 & 10)

Classification Keys Ø scientists use these keys to help them identify organisms Dichototmous Keys Includes paired descriptive statements to identify organisms 1 st Statement 2 nd Statement

Classification Keys Ø scientists use these keys to help them identify organisms Classification Tables: -has columns and rows with information

Classification Keys Ø scientists use these keys to help them identify organisms Flow Charts: -design is similar to a concept map, lines branch off from given traits

Classification Keys SPI 0807. 5. 1 Notes use these keys to help them identify organisms Science Ø scientists Classification Keys Branch Diagram: -looks similar to a tree branch, listed traits apply to all those organisms that come after

Review What kind of classification key is this? Flow Chart Classification Dichotomous Branch Diagram Table Key