View
0
Download
0
Category
Preview:
Citation preview
Photo by: http://gakuranman.com/anglerfish-ovary-microscopic-photography/
•An eukaryotic organism that is not a
plant, animal, fungus or bacteria.
•Most protists are unicellular and live
in water
•Usually motile (able to move)
•Heterotrophic – must consume food
•Examples: amoeba, paramecium
•Classified (grouped) by how they move
Animal-Like Protists
•Move using a flagella
http://www.youtube.com/watch?v=t6DSmymMjoA
•Move using cytoplasmic extensions
• called pseudopodia (“false feet”)
•Movement is also called ameboid
movement
The word “amoeba” means “to change”.
Their cytoplasm is always moving, they
never look the same.http://www.youtube.com/watch?v=Aa0cvmsD_2Q
•Protists that move using cilia
•Cilia are tiny hair-like extensions
•Ex: Paramecium
http://www.youtube.com/watch?v=bFRoZpIAuyk
http://www.youtube.com/watch?v=9Ynm5ZOW59Q
•Paramecium join and
exchange DNA
•Then, they divide (mitosis) and
the offspring are different from
the original parent
•This is a form of reproduction
What are the common names for these protists?
1. ____ Kingdom that an ameba
belongs to
2. ____ Extensions of cytoplasm
3. ____ How a paramecium moves
4. ____ Sexual reproduction in
paramecium
5. ____ Removes excess water
6. ____ A protist that changes
shape
A.Contractile vacuole
B.Pseudopodia
C.Conjugation
D.Amoeba
E.Cilia
F.Protista
1. Mouth Pore
2. Contractile Vacuole
3. Micronucleus
4. Macronucleus
5. Anal Pore
http://www.youtube.com/watch?v=9Ynm5ZOW59Q
Protists are primarily classified according
to how they obtain nutrition:
• Animal-like—heterotrophs
(eat other organisms)
• b. Plant-like—autotrophs
They contain chloroplasts
and make their own food
(photosynthesis).
• Fungus-like—
Decomposers/Heterotrophs
Didinium
Paramecium
eating
Green like plants!
Water mold
6 Groups of Plant like Protists
• Euglenoids
• Diatoms
• Dinoflagellates
• Red Algae
• Green Algae
• Brown Algae
Plant-like Protists
Euglena:
Nucleus
Contractile
Vacuole
Chloroplas
ts
Flagell
a
Eyespo
t
For photosynthesis
(light)
. Euglenoids
• Green• Unicellular• Live in fresh water• Autotrophs, but can be
heterotrophs under certain conditions.
• Flagella• Eyespot: sensitive to
light.• Chloroplasts • Pellicle
• Unicellular Algae:
• Phytoplankton provides a source of nourishment for
other organisms
Fungus-like Protists:
Examples—
a. Slime molds
b. Water molds
Recommended