Kingdom Protista Groups Protozoan and Algae Systematists have

Kingdom Protista Groups Protozoan and Algae

• Systematists have split protists into many kingdoms • Protists are the most diverse of all eukaryotes – – – Cell structure Nutrition Motility Life cyles Habitats

General characteristics • • Stuck in group First eukaryotic Largest group of 6 kingdoms Multicellular and unicellular Reproduce sex and asexually Divide by mitosis Complex cilia and flagella Autotrophic and heterotrophic

Two Major Groups Protozoans Algae “heterotrophic” “autotrophic”

Importance of studying Protists? • • They are everywhere there is water! Cause diseases Part of food chain Photosynthetic…what is important product? • Recycle nutrients…N, C and P

4 major groups of protozoans 1. 2. 3. 4. Sarcodina Ciliophora Zoomastigina (Mastigophora) Sporozoa

Sacrodina • Amoeba eating a ciliate • Concerns: – Amboeic dysentery: bloody diarrhea, vomiting, extreme stomach cramps, transmitted by contaminated food or water

How do Sacrodina Move? Pseudophodia

Sacrodina Special Characteristics • Asexual or sexual • Contractile vacuole • Eat by Phagocytosis – See animation • Unicellular • Habitat – Ponds – Lakes • Only in Fresh water http: //highered. mcgrawhill. com/sites/9834092339/student_view 0/c hapter 4/animation__cytoplasmic_streaming. html

Ciliophora “The Ciliates” paramecium

How do Ciliophora move? • Cilia

Special Characteristics Ciliophora • • Live in Fresh and salt water environments Respond to chemicals Trichocyst: help capture prey Micronucleus (genetic exchange thru conjugation) • Contractile vacuole – – Store and remove water

Ciliophora Examples – Bursaria – Didinium – Paramecium

Mastigophora • Move by flagella • Habitat: Fresh or salt water • Some are parasitic – Most live on bodies of other organisms

Mastigophora • Volvox • Euglena

Examples of Mastigophora • Trichonympha – Termites: digest cellulose…can we digest it? ? • Giardia – Fever Fatigue, fatal – Transmitted thru water/food from the protist: Giardia lamblia • African sleeping sickness – Fever, lethargy – Bite from a tsetse fly

Sporazoa

Sporazoa • No movement • Produced spores that withstand harsh conditions • Habitat: All parasitic

Examples of Sporazoa • Cryptospordium – Cryptosporidiosis (diarrhea) • Toxoplasmosis – Toxoplasma species • Malaria – destroys RBC – High fever – Delirium – Sweats and chills

• http: //www. brightstorm. com/science/biolog y/classification/protist-kingdom/