Download presentation
1
Taxonomy
2
Taxonomy Classification of organisms
Organisms are classified according to common characteristics
3
Taxonomic Categories Categories/divisions of life are called “Taxa”
Taxa go from broad to specific There used to be seven taxa used to classify organisms
4
The Old Taxa System Kingdom Phylum Class Order Family Genus Species
5
How we used to remember this:
King Phillip Came Over For Great Spaghetti
6
Another mnemonic: Kids Prefer Cheese Over Fried Green Spinach
7
New System of Classification
Domain Kingdom Phylum Class Order Family Genus Species
8
Classification of Humans
Domain – Eukaryota Kingdom – Animalia Phylum – Chordata Class – Mammalia Order – Primata Family – Hominidae Genus – Homo Species – Homo sapiens
9
Create a mnemonic Work with a partner and come up with a brand new mnemonic that includes all 8 of the current taxa
10
Modern Classification
Structural similarities suggest common evolutionary origins Classification helps to find evolutionary relationships The more taxa that two organisms share, the more closely they are related
11
Comparing Species How closely related are these?
Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Primata Family: Hominidae Genus: Homo Species: Homo sapien Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Xenarthra Family: Dasypodidae Genus: Dasypus Species: Dasypus novemcinctus
12
Comparing Species How closely related are these?
Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Xenarthra Family: Dasypodidae Genus: Dasypus Species: Dasypus novemcinctus Domain: Eukaryota Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Xenarthra Family: Bradypodidae Genus: Bradypus Species: Bradypus tridactylus
13
Binomial Nomenclature: a two name system
Organisms have a scientific name, and most have a common name. Scientific names include genus and species Genus name is capitalized Species name is lower case Both are in italics when typed Both are underlined when handwritten Genus can be written as first letter and period. Homo sapiens, or H. sapiens
14
Which of the following are incorrect? Correct them.
Eastern Diamondback Rattlesnake: Crotalus adamanteus American Alligator: alligator mississippiensis Thistle Sage: Salvia Carduacea Bullfrog: rana Catesbeiana Great Horned Owl: Bubo virginianus Georgia Oak Tree: quercus georgiana
15
Using binomial nomenclature to identify relatedness
Eurasian Common Toad: Bufo bufo Great Plains Toad: Bufo cognatus Spring Peeper: Hyla crucifer How many different genus do you see? How many different species do you see? Which are most related?
16
Using binomial nomenclature to identify relatedness
Black Spruce: Picea mariana Red Maple: Acer rubrum Norway Spruce: Picea abies What is the common name of the 2nd example? Which two are most related? Are they related at the genus or the species level?
17
Using binomial nomenclature to identify relatedness
Asp Viper: Vipera aspis Adder: Vipera berus Saw-scaled Viper: Echis carinatus What is the genus of the adder? What is the species name of the asp viper? Which two are most related?
18
Which two species are most related?
Which is least related to the others?
19
Which species are most closely related?
Which is the least related to the others?
20
Dichotomous system To identify organisms, scientists divide group into subsets based on characteristics The divisions continue until only one organism remains in each grouping
22
Dichotomous System for animals
23
Dichotomous People “A Pairs”
Divide wacky people into categories until all the people are in a pile by themselves. Draw the lines that show the divisions of categories. Name your people. Glue to paper background.
24
Dichotomous Key A series of paired statements about subsets.
Each pair of statements is numbered, and each object fits into one category. Each statement will identify the object OR send the reader to another numbered pair of statements for further defining.
25
Dichotomous Key 1a. Body speckled (go to 2) 1b. Body not speckled (go to 4) 2a. Body round: Rotunda 2b. Body not round (go to 3) 3a. Body with scalloped margin: Floribunda 3b. Body without scalloped margin: Digitorum 4a. Body striped Alternata 4b. Body not striped (go to 5) 5a. Rounded patterns on body: Ovalis 5b. Body without circles: Amorpha
26
Binomial Nomenclature: a two name system
Species have a scientific name, and most have a common name. Scientific names include genus and species Genus name is capitalized Species name is lower case Both are in italics when typed Both are underlined when handwritten Genus can be written as first letter and period. Homo sapiens, or H. sapiens
27
Which of the following are incorrect? Correct them.
Eastern Diamondback Rattlesnake: Crotalus adamanteus American Alligator: alligator mississippiensis Thistle Sage: Salvia Carduacea Bullfrog: rana Catesbeiana Great Horned Owl: Bubo virginianus Georgia Oak Tree: quercus georgiana
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.