Classification

How are living things classified?

How would you define classification?

Grouping things according to common characteristics

Sometimes things can be in more than one group

How would you classify these organisms?

Frog Gorilla Snake Bluebird Giraffe Lion

Zebra Horse Dog Fish Cat Iguana Mosquito

Land Water

Gorilla Lion Horse Dog Cat Zebra Snake

Iguana Fish Frog

Air

Mosquito Bluebird

Why do things need to be classified?

-To find them -create organization -They are easier to study

How would you classify automobiles?Automobiles

Trucks, cars, vans 2 door, 4 door, 5 door

Price Standard shift, stick shift

Why do scientists classify organisms?

It is easier to study living things if they are grouped according to similarities

Terms to know:Taxonomy- hierarchy of levels of

classificationTaxa- categories of classification Binomial nomenclature- 2 part naming

system of classification

Summary

Explain how & why organisms areclassified.

Organisms are classified into groups called taxa according to what they have in common. This makes them easier to

study.

Aim : What is taxonomy?

DO NOW: What is a HOMO-SAPIEN? (TAKE A GUESS)

Review of key terms: Taxonomy?

Taxa? Binomial Nomenclature?

Who was the 1st to classify organisms?Aristotle- 4th century B.C.

Created three groups for animals & two groups for plants

How were animals classified?Three main groups according to movement --- 1. Fly 2. Swim 3.Walk or crawl

Two groups for plants based on structure & size

How did classification expand?

1750’s Carolus Linnaeus put organisms into groups based on observable features

-Created binomial nomenclature

How does binomial nomenclature work?

Consists of a 2 part naming system genus- group in which organism belongs species- specific name for organism

ONLY ORGANISMS OF THE SAME SPECIES CAN MATE TO PRODUCE FERTILE OFFSPRING

Why do scientist use Latin to name organisms?

Latin is a universal language to all scientists & therefore names will not be confused (no translating!!)

How does binomial nomenclature work? Example ----Cats GENUS – Felis Wildcat-(genus-species) Felis sylvestris Housecat- Felis domesticus Cougar- Felis concolor

Example – Oak tree GENUS- Quercus

Red oak – Quercus rubra White oak- Quercus alba

Summary

Why is classification & binomial nomenclature important?

Through classification & binomial nomenclature, scientists are able to organize & study millions of organisms