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QuickTime™ and a decompressor are needed to see this picture. HISTORY OF LIFE ON EARTH AND CLASSIFICATION OF ORGANISMS
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HISTORY OF LIFE ON EARTH AND CLASSIFICATION OF ORGANISMS
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Universe
10 bya
Origin of the Earth/ Solar System
4.6 Bya
Origin of Life on Earth
3.5 Bya
Biological Changes
(BIO EVOLUTION)
Biodiversity
On
Earth
1,000,000,000 years = 1 B.Y.Bya = Billion years ago
3.5 Billion Years Ago3.5 Billion Years Ago
Oldest known life Prokaryotic cell
No nucleus
Resembles Cyanobacteria from today
Oldest known life Prokaryotic cell
No nucleus
Resembles Cyanobacteria from today
Ancient Fossil Bacteria : Pictured above are two kinds cyanobacteria from the Bitter Springs Chert. On the left is a colonial chroococcalean form, probably Myxococcoides minor, and on the right is the filamentous Palaeolyngbya.
Bitter Springs Chert (in Red)
http://www.ucmp.berkeley.edu/precambrian/bittersprings.html
1 BYA-1.8 BYA1 BYA-1.8 BYA
First Eukaryotic Cells 1 BYA
Fossils with preserved nuclei
First Eukaryotic Cells 1 BYA
Fossils with preserved nuclei
http://www.ucmp.berkeley.edu/alllife/eukaryotafr.html
600-560 MYA600-560 MYA Formation of the Ozone Layer
Cyanobacteria now producing much of the world’s Oxygen (O2).
UV rays hit oxygen and cause formation of Ozone (O3).
Now that Ozone is blocking UV rays…Life can move
onto land
Formation of the Ozone Layer Cyanobacteria now producing much of the world’s
Oxygen (O2).
UV rays hit oxygen and cause formation of Ozone (O3).
Now that Ozone is blocking UV rays…Life can move
onto land
http://www.albany.edu/faculty/rgk/atm101/ozone.htm#form
3.5 Bya
1,000,000,000 years = 1 B.Y.
1 Bya
560 MYAOzone Layer Forms
Today
When did Humans come along?When did Humans come along? Homo sapien sapiens (modern man)
first appears ~1.8 MYA (MILLION not Billion)
Homo sapien sapiens (modern man) first appears ~1.8 MYA (MILLION not Billion)
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3.5 Bya
1,000,000,000 years = 1 B.Y.
1 Bya
560 MYAOzone Layer Forms
Today
1.8 MYA
Homo sapien
ClassificationClassification
All living and extinct organisms are organized into units called TAXONS
6 Kingdom Classification: Bacteria Archaea Protists Plants Fungi Animals (Invertebrates and Vertebrates)
All living and extinct organisms are organized into units called TAXONS
6 Kingdom Classification: Bacteria Archaea Protists Plants Fungi Animals (Invertebrates and Vertebrates)
Classification — (Linneaus System)
KingdomPhylumClassOrderFamilyGenusSpecies
Taxonomic unit/ Taxon
Bacteria and ArchaeaBacteria and Archaea
Are unicellular prokaryotes (no nucleus) Primitive (simple) Archaea live in extreme conditions (ex: in lava
flows, ice)
Are unicellular prokaryotes (no nucleus) Primitive (simple) Archaea live in extreme conditions (ex: in lava
flows, ice)
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Archaea in deep sea vent!
ProtistsProtists
Are unicellular or multicellular eukaryotes (with nucleus)
Includes amoeba, algae (kelp)
Are unicellular or multicellular eukaryotes (with nucleus)
Includes amoeba, algae (kelp)
Volvox
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Amoeba
PlantsPlants
Are multicellular Eukaryotes (with nucleus) Can Photosythesize(autotrophs)
Are multicellular Eukaryotes (with nucleus) Can Photosythesize(autotrophs)
AmoebaQuickTime™ and a
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FungiFungi
Are multicellular eukaryotes (with nucleus) Absorb nutrients from the surrounding
(heterotroph)
Are multicellular eukaryotes (with nucleus) Absorb nutrients from the surrounding
(heterotroph)
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AnimalsAnimals
Eukaryotes and heterotrophs Invertebrates have no backbone Vertebrates have backbone
Eukaryotes and heterotrophs Invertebrates have no backbone Vertebrates have backbone
AnimalsAnimals Invertebrates - can be motile (move) or sessile (stationary); Body symmetry can be present/absent; if present, body can show radial symmetry or bilateral symmetry; Body can be divided into segments of sametype or different types
Invertebrates - can be motile (move) or sessile (stationary); Body symmetry can be present/absent; if present, body can show radial symmetry or bilateral symmetry; Body can be divided into segments of sametype or different types
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AnimalsAnimals Vertebrates - includes fishes, amphibians, reptiles (includes
birds), and mammals (have mammary or milk glands) Vertebrates - includes fishes, amphibians, reptiles (includes
birds), and mammals (have mammary or milk glands)
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