Explain_Keys_to_the_Kingdom / Microsoft
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Keys to the Kingdom
Classification
The arrangement of things into orderly
groups based on similarities.
Taxonomy
The science of identifying, classifying, and
naming living things.
Founded by Carolus Linnaeus
Carolus Linnaeus
He founded taxonomy and created the
seven-level system of classification that we
still use today.
Scientists later added “Domain” to
the classification system.
8 Levels of Classification
Domain
Kingdom
Phylum
Class
Order
Family
Genus
species
Dear King Phillip
Came Over For
Good Soup
Example: Dog
Eukarya
Animalia
Chordata
Mammalia
Carnivora
Canidae
Canis
familiaris
Domain
The broadest (most general) level of
classification for living things
3 Domains – Eukarya, Bacteria, and Archaea
We belong in Domain Eukarya.
Kingdom
The 2nd most general category of the eight
levels of classification
There are 6 kingdoms that we know of today:
Animalia, Plantae, Fungi, Protista,
Archaebacteria, and Eubacteria
Species
The most specific level of classification for
living things
Organisms all have a scientific name that is
the Genus and species together.
Human= Homo sapiens
Dog= Canis familiaris
Cat= Felis domesticus
Domain: Archaea
Kingdom: Archaebacteria
Have existed for at least 3 billion years
All are very small single-celled organisms
Are prokaryotic
Some are autotrophic and some are
heterotrophic
Reproduce asexually
Only live in extreme environments – Dead
Sea, hot springs, swamps, etc.
Archaebacteria
Examples: methanogens, halophiles, thermophiles
Domain: Bacteria
Kingdom:Eubacteria
All are single-celled organisms
Prokaryotic
Some are autotrophic and some are heterotrophic
Come in many shapes and sizes
Reproduce asexually
Prokaryotes that may be found in the human body;
most common type of bacteria found everywhere
Eubacteria
Examples: E. coli; Staphylococcus aureus
Domain: Eukarya
Kingdom: Protista
Appeared about 2 billion years ago
Most are single-celled organisms or simple
multicellular organisms
Eukaryotic
Some are autotrophic and others are heterotrophic
Most reproduce asexually
Environment: freshwater pond
Protista
Examples: all eukaryotes that are not plants,
animals, or fungi such as: Paramecium, slime
molds, Euglena, giant kelp
Domain: Eukarya
Kingdom: Plantae
Use the sun’s energy to make sugar (food)
through photosynthesis
Multicellular
Eukaryotic
Autotrophic
Asexual and sexual
Environment: all over the world; in water and
on land
Plantae
Examples: ferns, giant sequoia trees, grass, moss,
conifers
Domain: Eukarya
Kingdom: Fungi
Break down material outside their body and then
absorb (soak up) the nutrients
Most are multicellular
Eukaryotic
Heterotrophic
Some are asexual and others are sexual
Environment: dark, moist forest floor
Fungi
Examples: molds, mushrooms, mildew, lichens,
yeast
Domain: Eukarya
Kingdom: Animalia
Has a nervous system that helps them sense
and react to their surroundings
Multicellular
Eukaryotic
Heterotrophic
Sexual
Animalia
Examples: fish, dog, human, squid, snail, beetle