The most diverse eukaryotes…
Techno Protists
Some vocab before we start…
Prokaryotic
Eukaryotic
Some vocab before we start…
Prokaryotic
Eukaryotic
 Pro = before
 Eu = good/true
 Karyo = nucleus
 Karyo = nucleus
 Lack a nucleus
 Has a nucleus
 Does not have membrane
 Has membrane bound
bound organelles
 Eg. Monerans - bacteria
organelles
 Eg. Plant and animal cells
Unifying Characteristics
 Eukaryotic
 Most are unicellular and microscopic



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(some are colonial)
Most reproduce asexually (binary fission)
Lives in almost any environment that contains water
Move in a variety of ways
Obtain food in a variety of ways
How do protists obtain food?
Autotroph
Heterotroph
Saprotroph
• Auto = self
• Hetero = other
• Troph = nutrition
• Using light energy • Ingest organic
or inorganic
substances that
chemicals to
will be broken
make its own food
down for energy
• Sapro = decaying
E.g. algae
(photoautotroph)
E.g. slime molds
E.g. amoeba,
paramecium
• Absorbs nutrients
from decaying
organic matter
As they are presented in our textbooks…
3 Categories of Protists
Plant-like Protists
Animal-like
Fungi-like Protists
Protists (Protozoa)
1. Euglenophyta 1. Sarcodina
1. Slime molds
2. Chrysophyta 2. Mastigophora 2. Water molds
3. Pyrrophyta
3. Ciliophora
4. Sporozoa
Mnemonic Time!
Plant-like Protists
 contain chlorophyll and carry out photosynthesis
 commonly called algae
 four phyla: euglenophytes, chrysophytes, diatoms,
dinoflagellates
 accessory pigments help absorb light, give algae a
variety of colors
Phylum Euglenophyta
 Eugleno = good eye / Phyta = plant
 Single cells
 One or more flagella
 No cell walls
 Elastic layer called the pellicle
 Has chloroplast
 Autotrophic (photosynthesis) but
becomes heterotropic in the
absence of light
 E.g. – Euglena (euglenoid flagellates)
Phylum Chrysophyta
 Chrys = gold / Phyta = plant

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Single cells or grouped (colonies)
Motile and free floating
Cell walls (often with silica)
Chlorophyll and yellow pigment
in plastids
 Food stored as oil or complex
carbohydrates
E.g. golden algae and diatoms
Phylum Pyrrophyta
 Pyrro = fire / phyta = plant
 Single cells with 2 flagella
 Thick cell wall
 Chlorophyll and other
pigments in plastids
 Food stored in starch or oil
 Causes “red tide”
E.g. - dinoflagellates
Flagella
Animal-like Protists (PROTOZOA)
 No cell wall
 Heterotrophic (free living or parasitic)
 Classified according to means of locomotion into 4
phyla
Phylum Sarcodina
 Sarco = flesh
 Locomotion by protoplasmic
extensions called pseudopodia
 Many with shells
 Reproduces by fission
 Can become cysts when in harsh
conditions
 E.g. amoeba, foraminifera
Phylum Ciliophora
 Cilio = eyelash / phora =
bearing
 Locomotion by beating of
cilia
 Cilia also help in feeding
 Has a macronucleus and
micronucleus
 Reproduces by binary fission
or conjugation
 E.g. paramecium, vorticella,
and stentor
Phylum Sporozoa
 Sporo = seed / Zoa = animal
 Lack locomotive structures
 Lack contractile vacuoles
 Mostly parasitic
 Have sexual and asexual life
cycle stages and may infect
multiple hosts
e.g. plasmodium (malaria)
Phylum Mastigophora
 Mastigo = whip / phora = bearing
 Locomotion by flagella
 Absence of chlorophyll
 Parasitic and saprophytic
 E.g. trypanosoma (sleeping
sickness)
9 m
Kingdom Protista – The Protists
Homework
1.
Read front page of coloring sheet “Introduction to
Protozoans” and color protozoans on back side.
2.
Memorize names of 7 Phyla in Protista and know the
literal translation of their phylum name.
Entry Slip next class on reading content AND phylum names.
REMINDER: DISEASE PROJECTS DUE NEXT CLASS!!!`