May 17, 2017 Aims: SWBAT explain why scientists classify organisms SWBAT list major levels of hierarchy Agenda 1. Do Now 2. Class Notes 3. Guided Practice 4. Independent Practice 5. Practicing our AIMS: E.7-Classification How will you help our class earn all of our S.T.R.I.V.E. Points? Aim Check: 1
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SCIENCE 8 Classification E.7 Name: Date: Homeroom: Evolution OBJECTIVES: By the end of class, students will be able to SWBAT explain why scientists classify organisms. SWBAT list major levels of hierarchy. DO NOW CLASS NOTES 3
TAXONOMY: LIFE S FILING SYSTEM CLASSIFICATION: TAXONOMY: Living things are organized into different sized groups called The is the largest group; all on earth fit into 3 domains. 1. 2. 3. 4. 5. 6. 7. SPECIES: Organisms are classified based on 3 things: 1. 2. 3. Linnaeus came up with the way we scientifically name animals: The system for naming organisms called In this system, all of the scientific names are put together The basic biological unit of the Linnaean classification system is the species. 4
GUIDED PRACTICE DOMAINS The biggest group! (And the most general) Ex) all organisms in domain Eukarya are (their cells have a nucleus) KINGDOMS Inside each domain there are different Kingdoms (Domain Bacteria) (Domain Archaea) Ex) all organisms in kingdom Animalia have (are able to move) PHYLUMS Inside each Kingdom there are different Phylums Ex) all organisms in the phylum Chordata have a CLASS Inside each Phylum there are different Classes Ex) all organisms in the class Mammalia have ORDER Inside each Class there are different Orders Ex) all organisms in the order Carnivora FAMILY Inside each Order there are different Families Ex) all organisms in the family Felidae are GENUS Inside each Family there are different Genuses Ex) all organisms in the genus Felis are 5
SPECIES Inside each Genus there are different species Ex) all organisms in the species domesticus are BINOMIAL NOMENCLATURE Each animal has a unique name known as the The naming system used is called (bi=2 nomial=name, nomen=name clature=system) The scientific name is made up of the and the they are always written in italics or underlined The Genus name is capitalized The species name is lower case e.g. scientific name of human : Can be abbreviated: 6
INDEPENDENT PRACTICE 7
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UNIT TEST PRACTICE Directions: Answer each multiple choice question by circling the best answer and defend your answer in the textbox that is below. 1. A species that lacks the variation necessary to adapt to a changing environment is more likely to A. develop many mutated cells B. become extinct over time C. begin to reproduce sexually D. develop resistance to diseases 2. If an ecosystem is changed through a natural disaster, organisms will have the best chance of survival if A. their environment has few abiotic factors B. the organisms are large C. the population size is small D. their species exhibits genetic variation 3. In an environment that undergoes frequent change, species that reproduce sexually may have an advantage over species that reproduce asexually because the sexually reproducing species produce A. more offspring in each generation B. identical offspring C. offspring with more variety D. new species of offspring in each generation 9
4. Due to a mutation, a kangaroo living in a population in Australia is born with increased leg strength. This trait allows the kangaroo to escape predators more easily than the other kangaroos in the population. It is able to successfully pass on this adaptation and many more kangaroos with this trait are born. Explain how evolutionary change might occur in this populat ion of kangaroos over time. In your answer be sure to include the concepts of -Variation - Natural Selection 5. A population of bats feeds on flying insects. Some of these bats have a gene that results in much stronger flight muscles than those of the other bats in the area. Explain how this occurrence could lead to evolutionary change within this species of bat. In your answer, be sure to include the concepts of - Variation - Competition - Natural Selection 10
Science 8 Name: SKILL SNAPSHOT Date: E.7: Classification Homeroom: Quick Notes: Directions: Support your selection by jotting down your reasoning. Like A Scholar? Yes No Redo? Yes No Question 1. In the levels of classification, is more specific than family. Reasoning A. phylum B. class C. genus D. order 2. Choose the level of classification in order starting most specific and ending with most general. A. species, genius, order, class, phylum, kingdom B. phylum, class, order, genius, species, kingdom C. class, order, genius, species, kingdom, phylum D. kingdom, phylum, class, order, genius, species 3. The diagram below shows four organisms. Which two organisms are in the same kingdom? A. Bird and Mushroom B. Green plant and Shark C. Mushroom and Green Plant D. Bird and Shark 4. For each row, circle the scientific name that is LEAST like the other 2. a) Canis familiaris Canis lupis Felis domesticus b) Felis domesticus Mus domesticus Felis concolor c) Acer rubrum Acer saccarum Reseda odorata 11
Use the following table to answer questions 5-8: Kingdom Animalia Animalia Animalia Animalia Phylum Chordata Chordata Chordata Chordata Class Mammalia Mammalia Mammalia Mammalia Order Cetacea Carnivora Carnivora Carnivora Family Mysticeti Mustelidae Felidae Felidae Genus Balaenoptora Mustela Felis Felis Species B. physalus M. furo F. domesticus F. rufus Common Name Blue Whale Ferret Domestic cat Bobcat 5. How does the table indicate that a cat is more closely related to a bobcat than a ferret? 6. At what level does the relationship between a blue whale and a ferret separate? 7. Which two animals are most closely related? Explain. 8. What kind of animal is Balaenoptora borealis? How do you know? 12