1. Unit 6:
Protists and Fungi

2. Objectives: Know the 6 main characteristics of protists.
Know the three types of protists and examples of each type.
Know 3 ways protists move from place to place.
Know how protists reproduce.
Be able to identify and label three examples of protists.

3. Main Characteristics of Protists:
Most are unicellular, some are multi-cellular.
Cells contain a nucleus (eukaryotic).
Can be producers, consumers or decomposers.
Most do NOT have cell walls.
Some can move on their own.
Some reproduce asexually; some reproduce sexually.

4. Types of Protists 1. Plant-like protists:
Make their own food (producers)
Most are found in water
Examples:
Phytoplankton
Euglena
Diatoms (contain a cell wall)
Algae
Dinoflagellates.

5. Euglena eye spot - senses light but does not see.
contractile vacuole
flagellum
nucleus
chloroplast
eye spot - senses light but does not see.
flagellum (flagella) – whip-like structure used for movement.
contractile vacuole – squeezes out excess water from the cell.
Euglena reproduce by fission.

6. 2. Animal-like protists:
Obtain energy by eating other organisms (consumers)
Most are found in water
Examples:
Protozoa
Amoeba
Paramecium
Plasmodia
/files/Bio%20102/Bio%20102%20lectures/Protists/protists.htm //

7. large nucleus (macronucleus)
cilia
large nucleus (macronucleus)
mouth opening
(food passageway)
small nuclei (micronucleus)
contractile vacuole
food vacuoles
cilia – tiny hairs that allow for movement.
food passageway – allows food into cell
micronucleus – used for sexual reproduction
(conjugation: two organisms combine and exchange genetic material, then separate and divide by fission.)
macronucleus – controls other cellular activities

8. Amoebas reproduce asexually by fission.
food vacuole
false foot (pseudopods)
water vacuole
nucleus
cell membrane
pseudopods – arm-like structures that allow for movement and collecting food.
Amoebas reproduce asexually by fission.

9. 3. Fungus-like protists:
Digest food outside of the body with enzymes (decomposers)
Reproduces using spores
Examples:
Slime molds
Water molds: are parasites
Parasites obtain nutrients from inside a host.
PlantDiseaseoftheWeekArchived.htm
Slime_mold(ms-07).jpg