Kingdom Protista Chapter 20. Kingdom Protista – “Catch all” Eukaryotes Unicellular and...
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Transcript of Kingdom Protista Chapter 20. Kingdom Protista – “Catch all” Eukaryotes Unicellular and...
Kingdom Protista
Chapter 20
Kingdom Protista – “Catch all”
Eukaryotes Unicellular and Multicellular Autotrophic or heterotrophic Some have cell walls Many have structures specific for movement.
Types of Protists
Animal like Protists Plant like Protists Funguslike Protists
Animal-like Protists
Typically heterotrophic, motile, unicellular Live in water but can be found in moist soil Grouped by method of locomotion
Phylum Zoomastigina: Zooflagellates
Move by flagella Live symbiotically
Examples:-
1. Trichonympha collaris – termites
2. Tyrpanosoma brucei – tsetse fly cause sleeping sickness
Sarcodines
Amoeba Unicellular Move by psuedopods
“false foot” Feed by phagocytosis Can cause dysentery
Phylum Ciliophora: Ciliates
Paramecium Use cilia for feeding
and movement. Discharge trichocysts
to disable prey Reproduce sexually
and asexually
Phylum Sporozoa
Nonmotile parasites Form sporesExample:- Plasmodium vivax causes malaria Infected female Anopheles mosquito Cells bursts, high fever and severe chills
Malaria
Plantlike Protists
Chlorophyll and accessory pigments allow algae to harvest and use the energy from sunlight.
Gullet
Chloroplast
NucleusEyespotFlagella
Carbohydrate storage bodies
Pellicle
Contractile vacuole
Euglenophytes: Euglena
• Unicellular
•Moves by flagella
•Heterotrophic or autotrophic
LABEL IN YOUR NOTES!
Diatoms
Produce cell walls rich in silica (Si – the main ingredient in glass)
Dinoflagellates
Half are photosynthetic and the other half are heterotrophic.
Two flagella that cause it to spin like a top
Warm surface waters cause “blooms”
Red tide can paralyze humans
Plant like Protists - Algae
Live in water and photosynthesize (produce much of the earths oxygen)
Named for the type of chlorophyll and accessory pigments they contain - Green, golden brown, brown, and red
Produce food that maintain communities in oceans and fresh water
Chemicals from algae are used to make plastics, waxes, paints, deodorant. Also used to make ice-cream, salad dressing, pudding, or a candy bar.
Red, Brown, and Green Algae
Red Algae:- live at great depths due to their efficiency in harvesting light energy. Red algae contain chlorophyll a and reddish accessory pigments called phycobilins.
Brown algae:- contain chlorophyll a and c, as well as a brown accessory pigment, fucoxanthin.
Green Algae:- share many characteristics with plants, including their photosynthetic pigments and cell wall composition.
Unicellular Green AlgaeChlamydomonas
Chlamydomonas
Colonial Green AlgaeVolvox
Filamentous Green AlgaeSpirogira
Multicellular Green Algae
Fungus like Protist
Lack chlorophyll Absorb dead and decaying organic matter. Not classified as true fungi as they do not contain
chitin their cell walls.Examples:-1) Slime molds are fungus like protists that play key
roles in recycling organic material2) Oomycetes thrive on dead or decaying organic
matter in water and are plant parasites on land.