Protists I
Lab 3
BIOL 171
Remember!: Classification System
We’ll be
looking at all
of these!
Ancestral
Eukaryote
Protists are
everywhere in
Eukarya!
“the junk
drawer of the
eukaryotes”
THIS WEEK
We’ll be
looking at all
of these!
Ancestral
Eukaryote
Protists are
everywhere in
Eukarya!
“the junk
drawer of the
eukaryotes”
Old School:
6 Kingdoms
•
•
•
•
•
•
Plants (Plantae)
Animals (Animalia)
Fungi (Fungi)
Eubacteria
Archaeabacteria
Protista
A constantly changing system…
Linnaeus[5] Haeckel[6]
(1735)
(1866)
2 kingdoms 3 kingdoms
Animalia
Vegetabilia
Chatton[7]
(1925)
2 groups
Animalia
Plantae
Eukaryote
Copeland[8] Whittaker[2] Woese [9][10]
(1938)
(1969)
(1977,1990)
4 kingdoms 5 kingdoms 3 domains
Animalia
Animalia
Plantae
Plantae
Protoctista
(not
treated)
Protista
Prokaryote
Monera
Fungi
Eukarya
Protista
Monera
Archaea
Bacteria
This week....
1 A & B: Euglenozoans
Trypanosoma levisii
Euglena (alive and prepared)
2 A: Stramenopiles
Diatoms (living)
Diatomaceous Earth
Brown Algae
Ectocarpus (living)
Sphacelaria (living)
Fucus (preserved)
Laminaria (preserved)
Sargassum (preserved)
Water mold
Saprolegnia (prepared)
Pro-tip:
- Write these down.
- Circle exercises in your manual.
2 B: Alveolates
Paramecium caudatum (living)
Peridinium (dinoflagellate, living)
Other random dinoflagellates
2 C: Rhizarians (Foraminiferans and Radiolarians) - prepared
Lab Study 1 A & B: Euglenozoans
– Trypanosoma levisi (prepared slide)
– Euglena (make wet mount)
Trypanosoma and red blood cells
Euglena
Lab Study 2 A: Stramenopiles
Diatoms (Bacillariophyta) –
make wet mount
Also observe diatomaceous earth (the cell
wall deposits from diatoms) – make wet
mount and look at prepared slides
Diatom diversity
Diatom cell wall made of silica
Stramenopile flagella
WHY do they have two? Why might they be different?
Is it an adaptation? What is the function?
Brown Algae (Phaeophyta)
Living: Ectocarpus and Sphacelaria
Preserved: Fucus, Laminaria, Sargassum
Water mold
Lab Study B: Alveolates
Ciliate:
Paramecium caudatum – (wet
mount) in manual
Dinoflagellates: mixed
dinoflagellates (live & wet
mount), and Peridinium (wet
mount) not in manual
Paramecium structures
Dinoflaggelates
Lab Study 2 C: Rhizarians
• Foraminiferans - prepared slides
Radiolarians - prepared slides
Think about…
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•
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•
Morphological characteristics
Ecology of the organism
How does the organism get around?
What role do they play in the ecosystem?
Do they have any economic value?
Where do they live?
• Don’t know the answer?? It’s probably a great
research question! Ask me about it.