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Kingdom Protista
Chapter 20
Kingdom Protista – “Catch all”
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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 spores
Example: 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.
Euglenophytes: Euglena
Chloroplast
Carbohydrate
storage bodies
Gullet
Pellicle
Flagella
Eyespot
• Unicellular
•Moves by flagella
•Heterotrophic or autotrophic
Nucleus
Contractile
vacuole
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 Algae
Chlamydomonas
Colonial Green Algae
Volvox
 Chlamydomonas
Filamentous Green Algae
Spirogira
Multicellular
Green Algae
Fungus like Protist
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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 material
2) Oomycetes thrive on dead or decaying organic
matter in water and are plant parasites on land.