Download Heterotrophs

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
Animal-Like Protists
•Usually motile (able to move)
•Heterotrophic – must consume food
•Examples: amoeba, paramecium
•Classified (grouped) by how they move
http://www.youtube.com/watch?v=t6DSmymMjoA
•Move using a flagella
•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
See: Ameba Coloring
http://www.youtube.com/watch?v=bFRoZpIAuyk
•Protists that move using cilia
•Cilia are tiny hair-like extensions
•Ex: Paramecium
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.
2.
3.
4.
5.
Mouth Pore
Contractile Vacuole
Micronucleus
Macronucleus
Anal Pore
http://www.youtube.com/watch?v=9Ynm5ZOW59Q
Protists are primarily classified according
to how they obtain nutrition:
• Animal-like—heterotrophs Didinium
eating
(eat other organisms)
Paramecium
• b. Plant-like—autotrophs
They contain chloroplasts
and make their own food
(photosynthesis).
•
Fungus-like—
Decomposers/Heterotrophs
Green like plants!
Water mold
Plant-like Protists
Euglena:
Eyespo
t
For photosynthesis
(light)
Nucleus
Flagell
a
Contractile
Vacuole
Chloroplas
ts
• Unicellular Algae:
•
Phytoplankton provides a source of nourishment for
other organisms
Fungus-like Protists:
Examples—
a. Slime molds
b. Water molds