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Classifying Organisms - an Intro to Domains and Kingdoms

1. Why biologists organize things into groups (classification).2. Levels of classification with examples.• Domain • Kingdom• Phylum• Class• Order• Family• Genus• Species3. The characteristics used to classify organisms into domains and kingdoms.
by

Heather Van Houten

on 29 October 2017

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Transcript of Classifying Organisms - an Intro to Domains and Kingdoms

Classifying Organisms


- Process of grouping organisms based on their structural similarities
- The study of classifying organisms is called taxonomy


- Classifying living organisms is Similar to the classification of produce in grocery stores
- scientists Classify organisms based on their similarities
Domains and Kingdoms
By heather van houten
What is classification?
What are the levels of classification?
•Domain
•Kingdom
•Phylum
•Class
•Order
•Family
•Genus
•Species

-The more classification levels two
organisms share, the more similar
characteristics they have.
the classification of owls
- The top row has a wide range of organisms
- As you go down the classification system, there are fewer organisms in each level
- The fewer organisms there are, the more similar characteristics they have in common with owls.
Three
domains

of classification:
Bacteria
Archaea
Eukarya

Kingdoms
are
under the
domains
:
Bacteria
Bacteria
Archaea
Archaea
Eukarya
Protists
Fungi
Plants
Animals
Bacteria
- All around us, even inside our bodies
- Can be either heterotrophs or autotrophs
- Nucleus - dense part of the cell which contains nucleic acids.
- Nucleic acids - direct the cell's activities.
Archaea
- Can be found in harsh environments such as hot springs and swamps
- Name comes from Greek word "ancient" because they usually live in harsh environments
- unicellular prokaryotes
- Can be either heterotrophs or autotrophs - Structure and chemical make up really different from bacteria
- Classified in their own domains
Eukarya
- 4 different kingdoms of Eukarya - protists, fungi, plants, and animals
Protists
- Any eukaryotic organisms that cannot be classified as an animal, fungi, and plants
- Really special and different from other types
- Sometimes called "odds and ends."
- can be either heterotrophs or autotrophs, either multicellular or unicelluar.
Fungi
Plants
Animals
- Examples of Fungi - Mushrooms, molds, and mildew - MOst fungies multicellular, but the yeast you use for baking is unicellular
- Heterotrophs; most of them feed by absorbing nutrients from dead or decaying organisms
- Multicellular
- autotrophs.
- Most of them live on land
- The plant kingdom varies
ex. both tall plants and small plants exist
some plants can reproduce, some of them can't
- Familiar organisms like dogs and cats
- Multicellular
- Heterotrophs
- food and environment varies widely
Aristotle
How did it all begin?
- The first person known to
classify living things scientifically
- Aristotle used two groups, animals
and plants, to group living things
384 BC -
322 BC
Carolus Linnaeus
- 2000 years later, Linnaeus
created a new classification system
- He grouped living things into 2 Kingdoms, Plants and Animals
-living things were classifyied by their structural similarities
1707 - 1778
Carl Woese
- today our technology allows us to study living organisms more closely so we can be more specific with our classifications
- Woese placed all living things into one of three domains:
bacteria, archaea & eukarya
- each domain contains one or more kingdom
- there are 6 kingdoms of life
for example...
Let's look at how
biologists classify owls.
Today we will
concentrate on
Domains and
Kingdoms.
You can look at it like this...
Let's look at this panther.
OK...On to Domains and Kingdoms.
This is one way to look at it...
Here's another way...
and another...
The thing about science is that it's always changing. The way we classify organisms has changed so much over time.
Why?
As scientific equipment and technology (like microscopes) get better and become more accurate, they allow scientists to see and study organisms they didn't even know existed before! The more we know, the more accurate at classifying life we can be.
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