Where can you find them? All protists live in moist surroundings.

Where can you find them?Where can you find them?

All protists live in moist surroundings.

• SomeSome protists are unicellularprotists are unicellular (diatoms)(diatoms)

• Some are multicellular Some are multicellular Giant Giant kelps are example of kelps are example of multicellular protists.multicellular protists.

• Protists are Protists are eukaryotic (have eukaryotic (have a nucleus)a nucleus)

Scientists have proposed three Scientists have proposed three categories to group protists to categories to group protists to

help identify themhelp identify them

• Animal-like protists Animal-like protists

• Fungus-like protistsFungus-like protists

• Plant-like protistsPlant-like protists

ANIMAL-LIKE PROTISTSANIMAL-LIKE PROTISTS

• Animal-like protists Animal-like protists (CALLED (CALLED PROTOZOANPROTOZOAN))– able to move from place to able to move from place to

place to obtain foodplace to obtain food• PseudopodsPseudopods ( (false footfalse foot) -) -

temporary bulges in the cell temporary bulges in the cell membrane (also helps trap membrane (also helps trap food)food)

• CiliaCilia-hairlike projections from -hairlike projections from cells that move with a cells that move with a wavelike pattern (also helps wavelike pattern (also helps organism obtain food)organism obtain food)

• FlagellaFlagella- one to eight long, - one to eight long, whiplike appendagewhiplike appendage

– heterotrophsheterotrophs (cannot make (cannot make own food) own food) consume other consume other organismsorganisms..

– many can be parasitesmany can be parasites

Draw an example for each mode of movement

FUNGUS-LIKE PROTISTSFUNGUS-LIKE PROTISTS

• Fungus-like protists Fungus-like protists – use use sporesspores to reproduce to reproduce– heterotrophsheterotrophs (cannot make own food) (cannot make own food)

consume other organisms.consume other organisms.– appearance has a appearance has a fuzzy like covering or fuzzy like covering or

a shiny bodya shiny body– can group together and form a can group together and form a

multicellular multicellular massmass

PLANT-LIKE PROTISTSPLANT-LIKE PROTISTS• Plant-like protistsPlant-like protists

– ExamplesExamples• algaealgae• diatomsdiatoms• euglenaeuglena• dinoflagellatesdinoflagellates

– green in color, green in color, this comes from the this comes from the chlorophyllchlorophyll used in the photosynthetic used in the photosynthetic process.process.

– Some brown and red algae Some brown and red algae – autotrophs autotrophs (able to (able to produceproduce their their ownown foodfood))

• containing chlorophyll which helps the containing chlorophyll which helps the organismorganism

• sunlight (e.g. euglena drawn to light to sunlight (e.g. euglena drawn to light to make own food)make own food)

– most of the oxygen in Earth’s atmosphere is most of the oxygen in Earth’s atmosphere is made by made by algaealgae

– vary greatly in sizevary greatly in size• unicellularunicellular ( e.g. diatoms) ( e.g. diatoms)• multicelluarmulticelluar –(e.g. seaweeds) group –(e.g. seaweeds) group

together in coloniestogether in colonies– Some Some protists cannot move on their ownprotists cannot move on their own

DISEASES CAUSED BY DISEASES CAUSED BY PROTISTS PROTISTS

• MalariaMalaria- spread through mosquitoes - spread through mosquitoes

• Giardia- found in stream waterGiardia- found in stream water

AmoebaAmoeba

Dinoflagellates

Protozoan: Protozoan: BlepharismaBlepharisma

Slime MoldSlime Mold

Euglena: Euglena: PeranemaPeranema

Paramecium Paramecium aureliaaurelia

Stentor

Dog Vomit slime Dog Vomit slime MoldMold

Green AlgaeGreen Algae

ParameciumParamecium

Slime MoldSlime Mold

Euglena acusEuglena acus

SpirogyraSpirogyra

Water Mold Water Mold

Diatoms

Aquatic insect larvaeAquatic insect larvae

CRUSTACEANSCRUSTACEANS

Let’s Sing about Protozoans! • choruschorus

• 1. Amoebas, euglenas, paramecia1. Amoebas, euglenas, paramecia

• 2. They're found in the water 2. They're found in the water sometimes in the soilsometimes in the soil

• 3. They are so small even microscopic3. They are so small even microscopic

• 4. you can not sa-see them without a 4. you can not sa-see them without a microscopemicroscope

• AmoebasAmoebas

• 1. Its time for amoebas, they’re a 1. Its time for amoebas, they’re a protist tooprotist too

• 2. They're found in the water and in 2. They're found in the water and in the mudthe mud

• 3. They move and groove with their 3. They move and groove with their psdeuopodspsdeuopods

• 4. It looks demented kind of like a blob4. It looks demented kind of like a blob

•

•Chorus

Euglenas1. Its time for Euglenas, making water green2. They have a flagellum kinda like a tail3. They photosynthesize underneath the water4. They make their own food on the sunny days.

Chorus

Paramecia1. It's time for paramecia, another protozoan2. They move through the water with their cilia3. they live in ponds, rivers, and puddles4. they look like a footprint and it's pretty awesome