protists i lab 3 biol 171. remember!: classification system
TRANSCRIPT
Protists I
Lab 3BIOL 171
Remember!: Classification System
Ancestral Eukaryote
We’ll be looking at all of these!
Protists are everywhere in Eukarya!
“the junk drawer of the eukaryotes”
Ancestral Eukaryote
We’ll be looking at all of these!
Protists are everywhere in Eukarya!
“the junk drawer of the eukaryotes”
THIS WEEK
Old School:6 Kingdoms
• Plants (Plantae)• Animals (Animalia)• Fungi (Fungi)• Eubacteria• Archaeabacteria• Protista
Linnaeus[5]
(1735)2 kingdoms
Haeckel[6]
(1866)3 kingdoms
Chatton[7]
(1925)2 groups
Copeland[8]
(1938)4 kingdoms
Whittaker[2] (1969)
5 kingdoms
Woese [9][10]
(1977,1990)3 domains
Animalia Animalia
Eukaryote
Animalia Animalia
EukaryaVegetabilia PlantaePlantae Plantae
ProtoctistaFungi
Protista
(not treated) Protista
Prokaryote Monera MoneraArchaea
Bacteria
A constantly changing system…
This week....1 A & B: Euglenozoans
Trypanosoma levisiiEuglena (alive and prepared)
2 A: Stramenopiles Diatoms (living)
Diatomaceous Earth Brown Algae
Ectocarpus (living)Sphacelaria (living)Fucus (preserved)Laminaria (preserved)Sargassum (preserved)
Water moldSaprolegnia (prepared)
2 B: Alveolates
Paramecium caudatum (living)Peridinium (dinoflagellate, living)Other random dinoflagellates
2 C: Rhizarians (Foraminiferans and Radiolarians) - prepared
Pro-tip: - Write these down.- Circle exercises in your manual.
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 SphacelariaPreserved: 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…
• 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.