19Phylum Bacilariophyta: Diatoms or Golden Algae Silica—the shells of these organisms are used to make glass, concrete,Diatomaceous earth -dead diatoms settle to seafloor, collected and used in abrasivesPlanktonabundant food source for marine organisms
22Phylum Dinoflagellata: Spinning Algae-2 flagella for movement Some are bio-luminescentSome SymbioticSome ParasiticRed tide—population explosion of certain types of dinoflagellates. Kills large amounts of fish. Depletes water of oxygen and releases toxins into the water.
23Red Tide-Dinoflagellates The toxins produces by the Red Tide can make humans sick. Harvesting shellfish is banned during this time.
26Phylum Euglenophyta Freshwater This phylum is a typical example of the difficulties in categorizing protists:1/3 have chloroplasts, the other 2/3 do not.No sexual reproduction. Longitudinal fission.Propels the body through water.
28ANIMAL-LIKE PROTIST It is thought that these evolve into of Animals with multicellularity and specialized cells and tissue
29Phylum Zoomastigina: Move by Flagella Trypanosoma transmitted by the bite of a tsetse fly, cause African Sleeping Sickness.Animal-like protistsParasite
30Trypanosoma are Flagellates which cause African Sleeping Sickness Transmitted to their human hosts by a tsetse flyBelow: Trypanosoma in a sample of human blood X 400.
31Search ResultsMore Flagellates Zoomastigina Some are helpful and live in the gut of termites and digest wood
32More Flagellates Phylum Zoomastigina Animal-like protistsOther flagellates are known to spread sexually by infecting the vagina and urethra of women, and the prostate, seminal vesicles and urethra of men.Example:TrichomoniasisGiardia LambliaAttaches to intestinal tract and causes diarrheaCan become infected by drinking contaminated water from stream
33Phylum Rhizopoda-Amoebas Move by Pseudopodia Phylum Rhizopoda- amoebas, including Entamoeba hystolyticaPhylum Foraminifera- calcium carbonate shellPhylum Actinopoda-radiolariansTriviaWhite Cliffs of Dover, Egyptian pyramids
34AmoebaThe projections are called pseudopods or “false feet.”
52Summary of Protista Kingdom Most diverse group, autotrophic and heterotrophicEukaryotes, single celled and multicelledSome move by: flagella, pseudopodia, cilliaSome are parasitesReproduction both asexual and sexualSome are harmless, some cause sleeping sickness , malaria and STDs