Protists

Title :

Protists

Author :

Kim Foglia & Kelly Reidell

Number of slides:

12

Slideshow :

Content transcript :

Kingdom: Protists

Domain Eukarya

General characteristics

* Classification criteria

* eukaryotes 

* not animal, plant or fungi

Great Diversity

Problems with Protist Classification

* Too Diverse!

Theory of Endosymbiosis

Protist Diversity

* The full spectrum of modes of life

* from unicellular to multicellular 

* autotrophic to heterotrophic

* asexual to sexual reproduction

* pathogenic to beneficial

* sessile to mobile

Mobility

* How Protists move

* flagellum

* cilia

* pseudopod

Protist Diversity

* Animal-like Protists

* heterotrophs, predators

* Amoeba

* Paramecium

* Stentor 

Protist Diversity

* Plant-like Protists

* autotrophs, photosynthesis

* Euglena

* algae

* diatoms

Protist Diversity

* Parasitic & pathogenic Protists

* malaria

* Giardia

* trypanosomes

Protist Diversity

* Beneficial & necessary Protists

* small algae + diatoms

* much of the world’s photosynthesis

* produces ~90% of atmospheric oxygen

* heterotrophic protists + animals

* key ecological role at base of 

marine food web