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Instructions
SPI
0807.5.1
1)Work
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Classificatio
Keys bar.
Science
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Copy
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3) Then
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button on your keyboard to
This
is a memory
for the 8 levels of classification
advance
through device
this presentation.
Donkey Kong Puts Children On Flying Giant Squirrels
(1) Donkey (Domain)
(2) Kong (Kingdom)
(3) Puts (Phylum)
(4) Children (Class)
(5) On (Order)
(6) Flying (Family)
(7) Giant (Genus)
(8) Squirrels (Species)
Donkey Kong
Notes
SPI 0807.5.1
Classification Keys
Science
Tennessee SPI Objective:
Use a simple classification key to identify an
unknown organism.
Essential Learning
Students will identify unknown organisms using
classification keys.
Essential Question
How do I interpret and use the information in a
classification key to identify an unknown organism?
Notes
SPI 0807.5.1
Classification Keys
Science
Tennessee GLE Objective:
Identify various criteria used to classify organisms into groups
(Discuss)
Tennessee Check for Understanding:
Select characteristics of plants and animals that serve as the basis
for developing a classification key
(Discuss)
What is taxonomy?
Taxonomy is the science of defining and naming organisms.
 Organisms are classified according to similar physical and
genetic characteristics.
Notes
SPI 0807.5.1
Classification Keys
Modern Taxonomy:
 8 level system of classification
Categories go from broad to narrow
1) Domain
2) Kingdom
3) Phylum
4) Class
5) Order
6) Family
7) Genus
8) Species
Science
Notes
SPI 0807.5.1
Classification Keys
Science
8-level classification system
Similar Example: Where is Rock Springs Middle School?
1) The Universe
2) Milky Way Galaxy
3) Planet Earth
4) Northern Hemisphere
5) North America
6) The United States of America
7) Tennessee
8) Smyrna
Notes
SPI 0807.5.1
Classification Keys
Science
Classification Criteria
 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)
Notes
SPI 0807.5.1
Classification Keys
Science
Classification Criteria
 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
What is binomial nomenclature?
 Around 1735 Carolus Linnaeus created a system of
naming organisms called binomial nomenclature
 It is a two part naming method
 Uses the last 2 classification levels (Genus and Species) to
name an organism
Example:
Human Beings
Genus: Homo
Species: Sapiens
SPI 0807.5.1
Classification Keys
Notes
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
1st part
2nd part
Notes
SPI 0807.5.1
Classification Keys
Classification Keys
There are different types of classification keys.
Here is one example you might see on a quiz or test.
Science
Notes
SPI 0807.5.1
Classification Keys
Science
Classification Keys
There are different types of classification keys.
Here is another example you might see on a quiz or test.
Notes
SPI 0807.5.1
Classification Keys
Science
Classification Keys
There are different types of classification keys.
Here is another example you might see on a quiz or test.
Notes
SPI 0807.5.1
Classification Keys
Science
Classification Keys
There are different types of classification keys, but now we will
focus on dichotomous keys.
What is a dichotomous key?
It is series of paired questions which help you identify an organism.
Example:
(for identifying species of bears)
1a. It has white fur------------------species: Ursus maritimus
1b. It does not have white fur-----Go to step two
2a. It has brown fur-----------------species: Ursus arctos
2b. It doe not have brown fur-----Go to step three
3a. It has black fur------------------species: Ursus americanus
3b. It doe not have black fur-------Done
Video Link: Dichotomous Key Tutorial
Activity
SPI 0807.5.1
Classification Keys
Science
Classification Key Activity
T.Rex Dichotomous Key)
Stegosaurus
(A.K.A:
Pterodactyl
Apatosaurus
After reviewing the following you will make a dichotomous key
Here is an example using four dinosaurs
Steps
Dinosaur Dichotomous Key
A. It has wings
It is a Pterodactyl
1
B. It does not have wings
Go to step 2
2
A. It walks on two legs
B. It does not walk on 2 legs
It is a T.Rex
Go to step 3
3
A. It has a long neck
B. Does not have a long neck
It is a Apatosaurus
Go to step 4
4
A. It has spikes on its back
B. Does not have spikes
It is a Stegosaurus
Done
Activity
Ankylosaurus
Activity
Make a dichotomous key
about these 7 organisms
Velociraptor
Apatosaurus
T.Rex
Spinoaurus
Pterodactyl
Stegosaurus