1. Protists The world of Protists: Animal-like Protists
Plant-like Protists
Fungus-like Protists

2. Kingdom Protista Cell Number: Mostly single-celled, some colonial
Cell Type: Eukaryotic (has a nucleus and organelles)
Feeding: Hetero or autotrophic
Reproduction: Mostly asexual
Summary: Single-Celled Eukaryotes

3. Protist Diversity
200,000 species come in different shapes, sizes, and colors
All are eukaryotes – have a nucleus and membrane-bound organelles
Reproduce sexually or asexually

4. Protozoans
Animal-like Protists

5. Protozoans Unicellular – made up of one cell
Heterotrophs – they eat other organisms or dead organic matter
Classified by how they move

6. Amoebas Flagellates Ciliates Sporazoans
Phyla of Protozoans
Amoebas
Flagellates
Ciliates
Sporazoans

7. Amoebas: the blobs No cell wall
Move using pseudopods – plasma extensions or “fake feet” (draw picture)
Engulf bits of food by phagocytosis

9. Flagellates: the motorboats
Use a flagella – a whip like tail to move (draw one)
Some cause diseases

10. Trichomonas vaginalis: an STD

11. Ciliates: the hairy ones
Move with cilia – tiny beating hairs (draw one)

13. Sporazoans: the parasite
Non-motile - Do not move
Live inside a host
One type causes malaria

14. Malaria in red blood cells

15. Algae
Plantlike Protists

16. What are Algae?
Colonial– made of more than one cell, but can live singularly
Photosynthetic – make their own food
No roots, stems, or leaves
Each has chlorophyll and other photosynthetic pigments

17. Euglenoids Diatoms Dinoflagellates Red, Brown, & Green Algae
Phyla of Algae
Euglenoids
Diatoms
Dinoflagellates
Red, Brown, & Green Algae

18. Euglenoids: The Survivors
Aquatic
Move around like animals
Can ingest food from surroundings when light is not available

20. Diatoms: The Golden Ones
Have shells made of silica (glass)
Photosynthetic pigment called carotenoids – give them a golden color

22. Dinoflagellates: The Spinning Ones
Spin around using two flagella
Responsible for Red Tides
Create toxins that can kill animals and sometimes people

26. Red Algae: The…uh…Red Ones (duh)
Seaweeds
marine organisms
Have red and blue pigments

29. Brown Algae: The Brown Ones (You think?)
They have air bladders to help them float at the surface – where the light is.

31. Green Algae: Yeah, You Guessed it, The Green Ones
Most live in fresh water
Live alone or in groups called colonies
Ancestor to land plants

33. Fungus-like Protists

34. Characteristics in Common
All form delicate, netlike structures on the surface of their food source, mold-like
Obtain energy by decomposing organic material

36. Phyla of Fungus-like Protists
Plasmodium Slime Molds
Cellular Slime Molds
Water Molds & Downy Mildews

37. Slime Molds
Live in cool moist, shady places where they grow on damp, organic matter

38. Plasmodium Slime Molds
Form plasmodium: a mass of cytoplasm that contains many diploid nuclei but no cell walls or membranes – its feeding stage
Creeps by amoeboid movement – 2.5 cm/hour

39. Plasmodium continued…
May reach more than a meter in diameter
Form reproductive structures when surroundings dry up
Spores are dispersed by the wind and grow into new plasmodium

42. Cellular Slime Molds
In feeding mode, they exist as individual amoebic cells
When food becomes scarce, they come together with thousands of their own kind to reproduce
May look like a plasmodium

46. Water Molds and Downy Mildews
Live in water or moist places
Feed on dead organisms or parasitize plants
Fuzzy white growths

49. That’s All