The Diversity of Life: A Journey through Different Domains and Kingdoms
The Diversity of Life (Part 2)
Domains
•
There are many different sizes of taxa
•
The biggest taxon is “domain”
•
There are 3 domains:
1.
Bacteria
2.
Archaea
3.
Eukaryota
These are the
biological taxa,
with the biggest at
the top
Bacteria
•
Bacteria are single-celled (each organism is
only one cell)
•
They don’t have organelles
•
Some bacteria cause human diseases, but
others help us
•
Bacteria can live in many places, including
inside animals, like you!
This animation shows
bacteria making
copies of themselves
Archaea
•
Archaea are like bacteria in that they are
single-celled and don’t have organelles
•
They can live in extreme places where, until
recently, it was thought life cannot exist
•
Archaea can live in hot springs, underwater
volcanoes, and sewage treatment plants
•
A lot is still being learned about Archaea
A new group of
archaea was recently
discovered in
poisonous water
from mines
Archaea can live in
hydrothermal vents,
which are parts of an
underwater volcano
Eukaryota
•
Eukaryota cells have organelles and are bigger
and more complex than bacteria or archaea
•
Eukaryota are the only group that can have
more than one cell in one organism
(multicellular), although some eukaryota are
single-celled
•
Which domain are humans in?
6
Domain Eukaryota’s 4 Kingdoms
Protists: 1 of Eukaryota’s 4 Kingdoms
•
All protists are very
small
•
Some protists are like
plants and make food
from sunlight, while
others are more like
animals and get their
food from other living
things
Fungi : 1 of Eukaryota’s 4 Kingdoms
•
Multicellular, except
yeast
•
Fungi digest food
outside their body
and then absorb it
•
Besides Protists and
Fungi, the other 2
Kingdoms are Plants
and Animals
Species
•
“Species” is the smallest commonly used unit
of biological classification
•
There are about 1.7 million known species of
organisms
•
New species are still being found
•
About 70% of all known species are
Arthropods, which is a phylum (a smaller
group) within the animal kingdom
9
Arthropods
•
An arthropod is an
animal with no
backbone but with
an hard shell on the
outside
•
Insects, spiders,
shrimp, crabs, and
scorpions are
arthropods
Known Species of Organisms
Protists
Delve into the fascinating world of biological diversity, from the three domains of Bacteria, Archaea, and Eukaryota to the various kingdoms within Eukaryotas like Protists and Fungi. Discover the unique characteristics and habitats of each type of organism, highlighting the importance of understanding the complexity of life on Earth.
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Presentation Transcript
Domains There are many different sizes of taxa The biggest taxon is domain There are 3 domains: 1. Bacteria 2. Archaea 3. Eukaryota http://upload.wikimedia.org/wikipedia/commons/thumb/a/a5/Biological_classification_L_Pengo_vflip.svg/150px-Biological_classification_L_Pengo_vflip.svg.png These are the biological taxa, with the biggest at the top
Bacteria Bacteria are single-celled (each organism is only one cell) They don t have organelles Some bacteria cause human diseases, but others help us Bacteria can live in many places, including inside animals, like you! http://upload.wikimedia.org/wikipedia/commons/2/27/E.-coli-growth.gif This animation shows bacteria making copies of themselves
Archaea Archaea are like bacteria in that they are single-celled and don t have organelles They can live in extreme places where, until recently, it was thought life cannot exist Archaea can live in hot springs, underwater volcanoes, and sewage treatment plants A lot is still being learned about Archaea Champagne vent white smokers.jpg http://upload.wikimedia.org/wikipedia/commons/thumb/b/b0/Rio_tinto_river_CarolStoker_NASA_Ames_Research_Center.jpg/200px-Rio_tinto_river_CarolStoker_NASA_Ames_Research_Center.jpg A new group of archaea was recently discovered in poisonous water from mines Archaea can live in hydrothermal vents, which are parts of an underwater volcano
Eukaryota Eukaryota cells have organelles and are bigger and more complex than bacteria or archaea Eukaryota are the only group that can have more than one cell in one organism (multicellular), although some eukaryota are single-celled Which domain are humans in? http://upload.wikimedia.org/wikipedia/commons/thumb/7/7d/Eukaryota_diversity_2.jpg/220px-Eukaryota_diversity_2.jpg
Protists: 1 of Eukaryotas 4 Kingdoms All protists are very small Some protists are like plants and make food from sunlight, while others are more like animals and get their food from other living things
Fungi : 1 of Eukaryotas 4 Kingdoms Multicellular, except yeast Fungi digest food outside their body and then absorb it Besides Protists and Fungi, the other 2 Kingdoms are Plants and Animals
Species Species is the smallest commonly used unit of biological classification There are about 1.7 million known species of organisms New species are still being found About 70% of all known species are Arthropods, which is a phylum (a smaller group) within the animal kingdom 9
Arthropods File:Arthropoda.jpg An arthropod is an animal with no backbone but with an hard shell on the outside Insects, spiders, shrimp, crabs, and scorpions are arthropods
Known Species of Organisms Protists
