The kingdom protista
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The Kingdom Protista. It’s A Small World!. Click here to see a live protist .

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The Kingdom Protista

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The kingdom protista

The Kingdom Protista

It’s A Small World!

Click here to see a live protist

The kingdom protista

When we were a soft amoeba, in ages past and gone, Ere you were the Queen of Sheba and I King Solomon Alone and undivided, we lived a life of sloth Whatever you did I did; one dinner served us both. Anon came separation, by fission and divorce, A lonely pseudopodium I wandered on my course.

~Sir Arthur Shipley

Protozoans animal like protists

Protozoans: Animal-like Protists

  • Grouped by movement

  • Mostly asexual means of reproduction

  • Unicellular

  • Once were classified as animals

  • Many cause disease

Phylum sarcodina

Phylum Sarcodina

  • Amoeba

  • “The Blob”

  • Pseudopodia

  • Phagocytic/Pinocytic

  • Slow

  • Some pathogenic forms

  • Entertaining

Click here for ameboid movement movie

Phylum zoomastigina

Phylum Zoomastigina

  • Mast-like flagella

  • Some parasitic

  • Some helpful (termites)

Phylum ciliophora

Phylum Ciliophora

  • Numerous cilia for movement and for gathering food

  • Aquatic

  • Asexual and Sexual (conjugation)

  • Torpedo movement

Paramecium moving. Click to see

The kingdom protista


Two paramecia come together and exchange genetic material through their oral grooves. After becoming genetically altered in this way, they separate and each goes on to divide asexually.

The kingdom protista


Phylum sporozoa

Phylum Sporozoa

  • Parasitic

  • Non-motile

  • Most produce spores

  • Complex life cycles

  • Malarial Plasmodium is an example

  • See next slide for Malaria Cycle

Algae plant like protists

Algae: Plant-like Protists

  • Uni- or Multicellular

  • Photosynthetic

  • Once classified in Plantae Kingdom but no roots, stems, leaves

  • Highly pigmented

  • Base of most food chains

Phylum euglenophyta

Phylum Euglenophyta

  • Unicellular

  • Aquatic

  • Photosynthetic (autotrophic) and heterotrophic

  • Double movement: flagella and flexing euglenoid movement

Click here to watch euglena move about

The kingdom protista

Euglenoid Movement

By alternation of flexing and extending the pellicle, the euglenoid is capable of this type of movement in its aquatic environment. The flagellum is also of assistance in movement and food gathering.

Phylum bacillariophyta diatoms the golden algae

Phylum BacillariophytaDiatoms: the Golden Algae

  • Unicellular

  • Silica shell cases (like pillboxes with lids

  • Photosynthetic autotrophs

  • Marine and aquatic (phytoplankton)

  • Asexual and sexual forms of reproduction

  • Diatomaceous earth

The kingdom protista

…….to this

From this………..

Phylum dinoflagellata the spinning algae

Phylum DinoflagellataThe Spinning Algae

  • Unicellular

  • Thick cellulose plate cell walls

  • Double flagella

  • Mostly oceanic phytoplankton

  • Autotrophic symbionts

  • Red tide!

The kingdom protista


This may lead to……….

Phylum rhodophyta the red algae

Phylum RhodophytaThe Red Algae

  • Multicellular

  • Seaweed

  • Attach to rock

  • Photosynthetic by phycobilins (absorb green, violet and blue light rays of deeps)

Phylum phaeophyta the brown algae

Phylum PhaeophytaThe Brown Algae

  • Multicellular

  • Marine

  • Contain chlorophyll and fucoxanthin

  • Thallus body form

  • Kelp forms dense underwater forests

  • Sargassum forms dense floating mats

Phylum chlorophyta the green algae

Phylum ChlorophytaThe Green Algae

  • Mostly aquatic, some marine (some out of water, see next slide)

  • Photosynthetic with chlorophyll

  • Largest group

  • Colonial types, too

The kingdom protista

Typical Algae Reproductive Cycle

The fungus like protists

The Fungus-like Protists

  • Formerly classified in the Kingdom Fungi

  • Decomposers

  • Some damage crops

  • Slime molds are plasmodial(Myxomycota) or cellular(Acrasiomycota)

  • Water molds/Downy Mildew (Oomycota)

The kingdom protista

The cellular slime molds are unicellular, colonial, and multicellular at different stages of their life cycles. They thrive in moist environments with bacteria, usually on decaying organic matter.

The kingdom protista

Most water molds appear as white, fuzzy growths on decaying matter. The downy mildews appear similarly, but on living plant surfaces as above.

The kingdom protista


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