1. KEY CONCEPT The current tree of life has three domains.

2. Classification is always a work in progress.
The tree of life shows our most current understanding.
New discoveries can lead to changes in classification.
Until 1866: only two kingdoms, Animalia and Plantae
Animalia
Plantae

3. Classification is always a work in progress.
The tree of life shows our most current understanding.
New discoveries can lead to changes in classification.
Until 1866: only two kingdoms, Animalia and Plantae
Plantae
Animalia
1866: all single-celled organisms moved to kingdom Protista
Protista

4. Classification is always a work in progress.
The tree of life shows our most current understanding.
New discoveries can lead to changes in classification.
Until 1866: only two kingdoms, Animalia and Plantae
Animalia
Protista
Plantae
1866: all single-celled organisms moved to kingdom Protista
1938: prokaryotes moved to kingdom Monera
Monera

5. Classification is always a work in progress.
The tree of life shows our most current understanding.
New discoveries can lead to changes in classification.
Until 1866: only two kingdoms, Animalia and Plantae
Protista
Plantae
Animalia
1866: all single-celled organisms moved to kingdom Protista
1938: prokaryotes moved to kingdom Monera
Fungi
1959: fungi moved to own kingdom
Monera

6. Classification is always a work in progress.
The tree of life shows our most current understanding.
New discoveries can lead to changes in classification.
Until 1866: only two kingdoms, Animalia and Plantae
Animalia
Protista
Fungi
Plantae
1866: all single-celled organisms moved to kingdom Protista
1938: prokaryotes moved to kingdom Monera
Archea
Bacteria
1959: fungi moved to own kingdom
1977: kingdom Monera split into kingdoms Bacteria and Archaea

7. The three domains in the tree of life are Bacteria, Archaea, and Eukarya.
Domains are above the kingdom level.
proposed by Carl Woese based on rRNA studies of prokaryotes
domain model more clearly shows prokaryotic diversity

8. Domain Bacteria includes prokaryotes in the kingdom Bacteria.
one of largest groups on Earth
classified by shape, need for oxygen, and diseases caused
more bacteria in your mouth than people that have ever lived

9. Domain Archaea includes prokaryotes in the kingdom Archaea.
cell walls chemically different from bacteria
differences discovered by studying RNA
known for living in extreme environments
Live in places like deep sea vents, hot geysers, Antarctic waters

10. Zooflagellate with flagella for moving through water
Domain Eukarya includes all eukaryotes.
kingdom Protista
Zooflagellate with flagella for moving through water

11. Domain Eukarya includes all eukaryotes.
kingdom Protista
kingdom Plantae
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Concepts

12. Domain Eukarya includes all eukaryotes.
kingdom Protista
kingdom Plantae
kingdom Fungi
Moss cup fungi (Scarlet Elf Cups)

13. Domain Eukarya includes all eukaryotes.
kingdom Protista
kingdom Plantae
kingdom Fungi
kingdom Animalia

14. A Eukaryote that is not an animal, plant or fungus
Protista Kingdom
A Eukaryote that is not an animal, plant or fungus
May be single or multicellular
May be microscopic or large
Hard to classify the Protists

15. Diversity of Protists
Animal-like Protists
Protozoa is an example
Paramecium is an example
Pages

16. Diversity of Protists
Plantlike Protists
Photosynthetic plantlike protists are ALGAE
Dinoflagelletes
Diatoms

17. Diversity of Protists
Funguslike Protists
Decompose organic matter
Can move during part of life
Slime molds

18. Fungi Kingdom Heterotrophs that absorb their food
Absorb food from environment
No true leaves, roots or stems
Walls have chitin NOT cellulose like plants
Mainly decomposers
Examples: Mushrooms, lichen, yeast

19. Plant Kingdom
Plants are multicellular eukaryotes, most of which produce their own food (autotrophs) through photosynthesis
Have adapted to life on land
Have chlorophyll that captures energy
Cell walls

20. Plant Kingdom
Flip through Chapters 20 , 21 or 22 and find one new fact about plants and share with the class. (5 -7 minutes)
EXAMPLE: What are pine cones really used for? Why do some plants have flowers and others don’t? How long do different plants live? Land plants evolved from what?

21. Animal Kingdom Animals are the most physically diverse kingdom
All Animals are multi-cellular heterotrophs
Animals cells are supported by collagen
Animals are Diploid (have one set of chromosomes from each parent) and usually reproduce sexually
Asexual EX-Hydra produces through budding, Whiptail lizards have clones from females lizards