Download Dichotomous Keys Review

Dichotomous Keys Review
7th Grade Science
Carolus Linneaus
• Father of Taxonomy
• Latinized his name from Carl Linne
• Created the classification system
based on similarities in structure
Are you hungry???
• Dear King Philip Came Over For Good
Spaghetti
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Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species
Levels of Organization
• The species level of organization contains only
one type of organism.
• The smaller the level of organization, the more
closely organisms are related to one another.
• There are three domains: Archaea, Bacteria,
and Eukarya.
Dichotomous Keys
• A dichotomous key is used by scientists to
identify organism.
• They always give two options to help identify
an organism.
• At each step of the process of using the key,
the user is given two choices; each alternative
leads to another question until the item is
identified.
Dichotomous Keys
• A method for determining the identity of
something (like the name of a butterfly, a
plant, a lichen, or a rock) by going through a
series of choices that leads the user to the
correct name of the item.
• A dichotomous key is a listing of
characteristics, such as structure and behavior,
organized in such a way that an organism can
be identified or classified.
Aristotle—who is this dude?
• The Greek philosopher Aristotle was the
first person to scientifically classify living
things.
Vocab, anyone?
Taxonomy
Kingdom
Scientific name
The science of classifying
Second largest group of an
organism classification;
located between domain
and phylum
The genus and species
name of an organism; for
example—Aplondonita
Rufa, mountain beaver.
Vocab, anyone?
Abdomen
Species
Genus
The back end of the insect
that contains the internal
organs
A group of similar
organisms, whose
members can mate with
one another and produce
fertile offspring
Division of organism
classification below family
and above species
Vocab, anyone?
Order
Family
Domain
Division of organism
classification below class
and above family, as in
Carnivora, mammals that
feed on other animals
Division of organism
classification below order
and above genus
Largest division of
organism classification;
above kingdom