Kingdom Protista

Protista Evolutionary Advancement

Protista Organisms are single celled or multicelled They are a Eukaryotic Cell

Why Protists Are Important!~ Major Photosynthesis producers for ecosystems

~ Are used in food additives, seaweed products: toothpastes, cosmetics and paints.

~ Many Protists are parasites and will live in or on other organisms

There are 6 phylums of protists...

Yes you need to know them!

1. Euglenophyta Ex: Euglena & Paramecium

Live in Fresh water especially still waters

Can take in solid food

autotrophs

2. Chrysophyta Example: Diatoms

In fresh water and salt water

Are Autotrophs and contain chlorophyll

3. Phyrrophyta Example: Dinoflagellates

Autotroph

chlorophyll and red pigments

4. Chlorophyta Ex: Green Algae

Green algae live mainly in fresh water and moist soils

Are autotrophs

contain chlorophyll and carotene

multicellular or unicellular

5. Phaeophyta Example: Brown Algae

live in colder seawater

multicellular

autotrophic

contain chlorophyll and fucoxanthin

6. Phodophyta Example: Red Algae

Live in warm fresh water

multicellular

autotrophic

contain chlorophyll, carotene & phycobilin

The Origins of EukaryotesProtists were the first eukaryotes cells

Characteristics of Protists

Have Pseudopods (“False Feet”) for locomotion or will use a flagellum/cilia

Feeds by engulfing food by wrapping pseudopods around particles

They use asexual reproduction and Sexually Sometimes you will find some protists that will have more than one cell!

Interactions in Ecosystems

Protists play a key role as producers and consumers i.e. Large green, red and brown algae (seaweed) produce energy in photosynthesis for aquatic ecosystems

with global warming if we lost protists like algae the aquatic food webs would become unbalanced.

Corals rely on a symbolic relationship with protists to help produce their food.

Plant-Like Animal-LikeAutotroph Heterotroph

No Movement Movement by: Cilia, Flagellum & Pseudopods

Typically called “Algae” Typically called “Protozoans”Unicellular or Multicellular Unicellular

Nourishment by Photosynthesis

Nourishment by Engulfing Food Particles

Defined Organelles ~ Eukaryotic

Defined Organelles ~ Eukaryotic

A Comparison Animal-Like vs. Plant-Like