9/30/12 1 Ch 18: Kingdom of Protists (images not from the text are from the Internet - use a search engine & retrieve “Images”) DNA-based Oldest Eukaryotes - Notable inventions organelles Autogenous theory eg: ER, Golgi Endosymbiotic theory eg: chloroplast, mitochondrion Diplontic Haplontic Alternation of generations Some other notable inventions sexual reproduction: gametes (sperm & egg) (sometimes in gametangium/gia) meiosis = process to make haploid (1N) cells fertilization = process to make diploid (2N) cells -> first one: zygote & some protists (protists) Spores
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Ch 18: Kingdom of ProtistsP: Euglenophyta = Euglenozoa = euglenoids unicellular, mostly freshwater, started as chemoheterotrophs, now some are photoautotrophic (chl a & b) How? Euglena
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9/30/12
1
Ch 18: Kingdom of Protists
(images not from the text are from the Internet - use a search engine & retrieve “Images”)
DNA-based
Oldest Eukaryotes -
Notable inventions
organelles Autogenous theory
eg: ER, Golgi
Endosymbiotic theory eg: chloroplast, mitochondrion
Diplontic Haplontic Alternation of generations
Some other notable inventions
sexual reproduction: gametes (sperm & egg) (sometimes in gametangium/gia)
meiosis = process to make haploid (1N) cells
fertilization = process to make diploid (2N) cells -> first one: zygote
& some protists (protists)
Spores
9/30/12
2
Modern taxonomy uses a DNA-based family tree but also still uses:
Morphology (form)= what kinds of bodies:
unicellular colony
filament multicellular/complex
Modern taxonomy uses a DNA-based family tree but also still uses:
Biochemistry
nutrition
chemoheterotrophs
photoautotrophs
photoheterotrophs *very rare
Movement methods
flagellum/a
cilium/a
amoeboid flow
gliding on slime
Modern taxonomy uses a DNA-based family tree but also still uses:
Habitat (where does it live)
fresh-water
marine
terrestrial
body (someone else’s) fluids
Dormancy (does it do this and if it does, what does it form)
statospores
cysts
9/30/12
3
What is an alga {are algae (pl)}? now usually used for photosynthetic protists
What are non-photosynthetic protists called? usually “protozoan/protozoa (pl)