Kingdom Protista

-Kingdom at the Crossroad-

Clasification:

• Free living
• Eukaryote
  
• unicellular, colonial forms
• 3 Types:
  

-Animal Like
-Plant Like
-Fungus Like

(They are most easily classified for what characteristic that are NOT possessing)
not animals, not plants, not fungus


Animal-Like Protists:

"Protozoans"

• Unicellular & Colonial
• Eukaryote
• Heterotrophic
• Endosymbiont Hypothesis

-first eukaryote cell was formed by a symbiosis among several prokaryotes which lost the ability to live alone on its own.

1. Ciliates - motile, cilia, free living

• Example: Paramecium (reproducing by binary fission, conjugation).

2. Flagellates - motile, flagella, reproduce asexually by binary fission and sexually

• Example: Trypanosoma - which causes African Sleeping Sickness
• Example: Trichonympha - which lives in termites and help digest food

3. Sporozoans - non-motile, parasitic, produced by spores

• Example: Plasmodium - which causes malaria

4. Sarcodina - "False Feet" pseudopod

• Example: Amoeba - some causes amebic dysentary
  

* Infectious Disease is caused by the given information form the article above *

Amoeba

Paramecium

Radiolarian

Plant-Like Protists:

• Single celled
• Photosynthetic
• Some are flagellated, luminescent
• Many live freely or as colonies
• Phytoplankton - primary producer of oxygen

-Euglenophta- Euglena (autotrophic and heterotropic)
-Pyrrophyta- Dinoflagellates (luminescent, produce toxins that shellfish absorbs - Dangerous - RED TIDE)
-Chrysophyta- Diatoms, important component of marine plankton - food source for marine animals, silicon cell walls important component of detergents, polishes, and paint removers.

(Whoa i totally did not know that.)

Diatoms

Spyrogyra

Fungus - Like Protists:

• Contain parasitic and predatory molds that produce spores
• Most are single celled, decomposer in aquatic habitat
• Phagacytic slime molds live as single amoeba cells or aggregation of cells that migrate together and form spore producing structures
• A cellular slime molds - help scientist study movement of protoplasm, form plasmodia at one point in life cycle.
• Cellular slime molds - help scientist study how cells communicate, function like a single, multicelled organism as one point in their life cycle.

Slime mold

ALGAE
(protist or Plants???)

• Red, Brown and Green Algae
• Many scientist place them in Plant Kingdom