Kingdom Kingdom ProtistaProtista

“ The Catch-All “ The Catch-All Kingdom” Kingdom” ProtozoansProtozoans

CharacteristicsCharacteristics Single celledSingle celled MicroscopicMicroscopic Move independently – named for mechanism of Move independently – named for mechanism of

movementmovement 65,000 species65,000 species Most heterotrophicMost heterotrophic Free-living or parasiticFree-living or parasitic All capable of asexual reproduction through All capable of asexual reproduction through

binary or multiple fissionbinary or multiple fission Some reproduce sexually through conjugationSome reproduce sexually through conjugation

Sexual reproductionSexual reproduction

Asexual reproductionAsexual reproduction

Binary Binary fissionfission

Schizogony Schizogony

Asexual reproduction in Asexual reproduction in multiple fission, as in multiple fission, as in MalariaMalaria

ClassificationClassification

Currently based on HOW Currently based on HOW they MOVEthey MOVE

Reviewing this by looking at Reviewing this by looking at phylogenyphylogeny

4 Phyla of Protozoans4 Phyla of Protozoans

SarcodinaSarcodinaCiliophoraCiliophoraZoomastiginaZoomastiginaSporozoaSporozoa

AdaptationsAdaptations

Physiological mechanisms, Physiological mechanisms, like eyespotslike eyespots

Form cystsForm cystsMultiple nucleiMultiple nuclei

Evolution of ProtistaEvolution of Protista

Prokaryotes – 3.5 billion years agoProkaryotes – 3.5 billion years ago Eukaryotes – 1.5 billion years agoEukaryotes – 1.5 billion years ago Protozoan thought to be descendents of Protozoan thought to be descendents of

first eukaryotesfirst eukaryotes Endosymbiotic TheoryEndosymbiotic Theory

Endosymbiotic TheoryEndosymbiotic Theory

Phylums…Phylums…

SarcodinaSarcodina 40,000 species40,000 species AmoebasAmoebas Pseudopodia – most movePseudopodia – most move Cytoplasmic streamingCytoplasmic streaming Eat other protistsEat other protists Ecological roles: Ecological roles: forams – tests made from caco3 – sink to bottom forams – tests made from caco3 – sink to bottom

and make limestone and chalk depositsand make limestone and chalk depositsRadiolaria – t4ests made form sio2Radiolaria – t4ests made form sio2 Cause diseases like amebic dysentaryCause diseases like amebic dysentary

Phylum CiliophoraPhylum Ciliophora

8,000 species8,000 species Move using ciliaMove using cilia Pellicle, oral groove, gullet, macronucleus, Pellicle, oral groove, gullet, macronucleus,

micronucleusmicronucleus ParameciumParamecium

Phylum ZoomastiginaPhylum Zoomastigina

2,500 species2,500 species Move using flagellaMove using flagella Most free-livingMost free-living Cause disease – zooflagellatesCause disease – zooflagellates African trypanosomiasis – sleeping sickness – African trypanosomiasis – sleeping sickness –

tsetse flytsetse fly Chagas Disease – kissing bugChagas Disease – kissing bug Leishmaniasis – sand flyLeishmaniasis – sand fly giardiasisgiardiasis

The tsetse fly – sleeping sickness The tsetse fly – sleeping sickness vectorvector

The Kissing BugThe Kissing Bug

LeishmaniasisLeishmaniasis

Phylum SporozoaPhylum Sporozoa

6,000 species6,000 species Carried in bloodCarried in blood Cause disease like toxoplasmosis and Cause disease like toxoplasmosis and

malariamalaria Know malaria cycle!!!!Know malaria cycle!!!!

The end for now….The end for now….

This powerpoint was kindly donated to www.worldofteaching.com

http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.