19 Phylum 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
22 Phylum 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.
23 Red Tide-Dinoflagellates The toxins produces by the Red Tide can make humans sick. Harvesting shellfish is banned during this time.
26 Phylum 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.
28 ANIMAL-LIKE PROTIST It is thought that these evolve into of Animals with multicellularity and specialized cells and tissue
29 Phylum Zoomastigina: Move by Flagella Trypanosoma transmitted by the bite of a tsetse fly, cause African Sleeping Sickness.Animal-like protistsParasite
30 Trypanosoma 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.
31 Search ResultsMore Flagellates Zoomastigina Some are helpful and live in the gut of termites and digest wood
32 More 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
33 Phylum Rhizopoda-Amoebas Move by Pseudopodia Phylum Rhizopoda- amoebas, including Entamoeba hystolyticaPhylum Foraminifera- calcium carbonate shellPhylum Actinopoda-radiolariansTriviaWhite Cliffs of Dover, Egyptian pyramids
34 AmoebaThe projections are called pseudopods or “false feet.”
52 Summary 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