1. Protists

2. LIFE Prokaryote Eukaryote
Archaea Bacteria Protista Fungi Plantae Animalia

3. 1) Characteristics
A) mostly single-celled organisms
- microscopic
- eukaryotes
i.e. nucleus, organelles
- asexual and sexual reproduction
- great variation in form and life style

4. 2. Types of Protists Animal-Like Protists Fungus-Like Protists
Plant-Like Protists

5. Animal-like Protists (aka. Protozoans)
Characteristics:
1) heterotrophs
a) eat prokaryotes, protozoans, organic wastes
2) some parasitic
a) energy from host

6. 2. Types of Protists Animal-Like Protists Cercozoans – amoeba
Ciliates – paramecium
Flagellates
Sporozoan

7. Types of Animal-like protists
1. Cercozoan (Amoeba)
special characteristics: pseudopods (false feet) used both for locomotion and ingestion
live in salt water, fresh water, mud, intestines

10. Types of Animal-like protists
2. Cilliates (Parameci)
special characteristics: cilia used both for locomotion and ingestion
live in fresh water

12. 3. Flagellates - special characteristic: Flagella for locomotion
ex. Trypanosoma (African Sleeping sickness)
Trichonympha (mutualism/ termites)

13. 4. Sporozoa
- special characteristic: No locomotion
- parasitic
Ex. Plasmodium (malaria)

14. B) Fungus-like protists - heterotrophs (absorb nutrients) - examples of fungus-like protists 1. slime molds - found in damp soil, logs - crawls as mass of cells 2. mildew and water molds - most are decomposers, some parasitic

16. C) Plant-like protists (aka phytoplankton, algae)
- autotrophs (photosynthesis)
a) different pigments/ different colours
ex. chlorophyll = green
- examples of plant-like protists
1. diatoms
- special characteristic: cell wall made of silica
- salt water

19. 2. dinoflagellates
- special characteristics:
- 2 flagella
- armoured shell
- may produce algal bloom
- red tide
- may be bioluminescent
- may live in coral
-mutualism, coral bleaching

23. 3. Euglenoids
- special characteristic: both plant-like and an animal-like
i) plant-like : undergoes photosynthesis
ii) animal-like: moves (flagella) & eats
- Eyespot ... positive phototropism
- live in fresh water

25. 4) Multicellular Algae - Largest of the protists
- Plant-like (no cell differentiation)
i) evolution of green plants
ii) holdfast (no roots)
- Red, brown, green
(kelp, spirogyra, fucus, ulva)