Kingdom Protista Anything but a prokaryote, fungus, plant or animal!
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Transcript of Kingdom Protista Anything but a prokaryote, fungus, plant or animal!
Protozoansanimal-like because they do not have a cell wall, heterotrophic & most have a structure for movement NOT like animals because they are single-celled
Types Example How they move
Zooflagellates Trypanosoma- causes African Sleeping Sickness- Tsetse flies transmit it
Flagella- whiplike extension
Sarcodines Amoeba Pseudopod
Ciliates Paramecium Cilia
Sporozoans Plasmodium-causes Malaria transmitted by mosquitoes- RBC bursts
Non-motile-no structures for movement
http://www.cdc.gov/ncidod/dpd/parasites/leishmania/factsht_leishmania.htm
Leishmania transmitted by sand flies
Flagellate Video Clip- only problem is Euglena it has flagella but is classified as a type of algae now!
• Protists\flagellates.asf
Algaeplant-like because they have cell walls and are autotrophicNOT like plants because some algae are single-celledand the multicellular algae DO NOT have the complex structures that plants do such as roots, stems, and leaves….also the cell wall composition can be different as well.
• Red Algae- Rhodophyta• Brown Algae- Phaeophyta• Green Algae- Chlorophyta• Euglena- Euglenophyta• Golden Algae- Chrysophyta
– Diatoms- in class Bacillariophyceae• Dinoflagellates- Pyrrophyta
Euglena- hard to classify because it has characteristics of BOTH plant-like AND animal-like protists
Chrysophyta
Many have silica in the cell walls
(Diatoms are in class Bacillariophyceae- your book
lists it in a separate phylum)
Pyrrophyta (dinoflagellates) causes red tides which kill other organisms and can harm us too! G. Gonyaulax
Karenia brevis
They produce a potent neurotoxin
Fungus-like• Fungus-like because they are heterotrophic-
food breakdown outside cell and they absorb the nutrients, they act as decomposers- of dead/decaying matter, and grow in damp environments
• Not like fungus because these protists DO NOT have chitin in their cell walls, they have centrioles-(which help separate chromosomes during cell division) and some can move during their lifetime
• Examples– cellular slime molds– acellular slime molds– water molds
cellular slime moldsMost are single-celled and are like amoebas in the soil
They can when needed come together in a large colony and work together
ACELLULAR SLIME MOLDS Like amoebas but when they come together the cells fuse and are known as Plasmodial slime molds
Phytophthora infestans- 1846- close to 1million people died and another million emigrated to the US because this water mold infected the main crop
WATER MOLDS