Transcript KINGDOM: PROTISTA

KINGDOM: PROTISTA
“It’s a small world, after all . . .”
WHAT IS A PROTIST?
PROTISTS :
 Uni- or multicellular
 Have a TRUE nucleus (eukaryotic)
 Can be heterotrophic or autotrophic
 LIVES IN MOIST SURROUNDINGS
WHY STUDY PROTISTS?
PROTISTS . . .
 ARE
THE BASIS
OF MANY FOOD
CHAINS
 Help control
BACTERIAL
populations by
EATING THEM
THREE KINDS OF PROTISTS
 PLANT
LIKE
(are autotrophic)
 ANIMAL LIKE
(move to food)
 FUNGUS LIKE
(decomposer)
ANIMAL-LIKE PROTISTS
 Known
as PROTOZOANS
 HETEROTROPHIC
 UNICELLULAR
 Have
the ability to MOVE
AMOEBA
AMOEBA or AMEBA
MOVE AND FEED
USING A
PSEUDOPOD OR
“FALSE FOOT”
ANIMAL-LIKE PROTISTS
AMOEBA
PSEUDOPODS form
when the cytoplasm
moves
ANIMAL-LIKE PROTISTS
AMOEBA
AMOEBAS GET RID
OF EXTRA WATER
WITH A
CONTRACTILE
VACUOLE
ANIMAL-LIKE PROTISTS
AMOEBA
AMOEBA
Amoeba feed on bacteria and
smaller protists
PARAMECIUM
PARAMECIUM MOVE
USING CILIA –
HAIRLIKE
EXTENSIONS FROM
THE CELL
(and now to the
videotape!)
Check out the
PARAMECIUM EATING!!
ANIMAL-LIKE PROTISTS
PARAMECIUM
Like amebas,
paramecium
have a
contractile
vacuole to
remove
excess
water.
PARAMECIUM
Paramecium feed
on bacteria and
smaller protists
ANIMAL-LIKE PROTISTS
PARAMECIUM
The movement
of the cilia
sweeps food
into the oral
groove
PARAMECIUM – Draw your own in
your notebook and label the parts
ANIMAL-LIKE PROTISTS
PARAMECIUM and AMOEBA
Both paramecium and amebas
mostly reproduce asexually
by binary fission.
Some paramecium can
reproduce sexually by
conjugation.
PROTOZOANS WITH FLAGELLA
 Zooflagellates
use
flagella to move
 Many are parasites
 They live inside the
bodies of other
organisms
PROTOZOANS WITH FLAGELLA
Giardia
is a
human
parasite
Causes
“hiker’s
disease”
FUNGUSLIKE PROTISTS
 Are
heterotrophs
 Act
like
decomposers
 Absorb
their food
FUNGUSLIKE PROTISTS
A
water
mold
caused the
Irish
potato
famine in
the 1840’s
FUNGUSLIKE PROTISTS
 Slime
molds
live on decaying
plants
 Some can be
seen with the
naked eye
PLANTLIKE PROTISTS
CONTAIN
CHLOROPHYLL
Uni- or multi-cellular
KNOWN AS “ALGAE”
AUTOTROPHIC
PLANTLIKE PROTISTS
EUGLENA

UNICELLULAR

HAVE CHLOROPLASTS

Use flagella to move
towards light

AUTOTROPHIC IN LIGHT
EYESPOT detects light
EUGLENA
Euglena becomes
Heterotrophic IN DARK
GENERAL ALGAE information
MOST ARE
UNICELLULAR
which live in
colonies
LIVE IN
FRESHWATER OR
SALTWATER
MULTICELLULAR ALGAE is called SEAWEED.
THREE “MAIN” COLORS OF ALGAE
1. Green Algae
2. Red Algae
3. Brown Algae
RED ALGAE

LIVE IN DEEP OCEAN
WATERS

RED PIGMENT CAN
ABSORB THE LITTLE
LIGHT FOUND AT THOSE
DEPTHS
BROWN ALGAE
IMPORTANT FOOD SOURCE
for many oceanic animals.
Found in COLD water
ecosystems.
Can you name an animal that
lives near or with brown
algae?
BROWN ALGAE
GIANT KELP FORMS LARGE UNDERWATER
FORESTS, HOME TO MANY ORGANISMS