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Biology 🧪
Classification
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Created by
Agatha Steed
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Cards (21)
What should you be able to describe by the end of the video?
Organism classification
and
evolutionary trees
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Why did scientists begin to classify species?
To organize the enormous variety of species
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Who began to classify species in the 1700s?
Carolus Linnaeus
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What are the two kingdoms Linnaeus divided organisms into?
Animal
kingdom and
plant
kingdom
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What are the categories Linnaeus used to classify organisms?
Kingdom
Phylum
Class
Order
Family
Genus
Species
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What mnemonic can help remember Linnaeus's classification categories?
King Phillip
came over for good soup
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If given a classification of an organism, what might you be asked to fill in?
The missing
category
in the classification
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What is the binomial system in classification?
It uses
genus
and
species
names
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What is the binomial name for the polar bear?
Ursus maritimus
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What is the key fact about Linnaeus's classification system?
It is based on observable
characteristics
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What major advances in biology have occurred since Linnaeus's time?
Microscopy and DNA analysis
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Who developed the three domain classification system?
Carl Woese
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What are the three domains in the three domain system?
Archaea
Bacteria
Eukaryota
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Where are archaea often found?
In extreme conditions like hot springs
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What do eukaryota include?
Animals, plants, fungi, and
protists
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How do scientists use evolutionary trees?
To show relationships between
organisms
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What data do scientists use to create evolutionary trees for living organisms?
Classification
data and
DNA
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What is a challenge when creating evolutionary trees for extinct organisms?
Incomplete
fossil records
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What does the evolutionary tree indicate about species one, two, and three?
They share a
common ancestor
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What type of questions can be found in the revision workbook?
Questions on
classification
and
evolutionary trees
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An evolutionary tree
Species 1 and 2 are closely related to each other.