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3/30/2011
1
Protozoan Groups
Chapter 11
1) ciliates---cilia
2) flagellates---flagella
3) amebas---pseudopodia
4) sporozoans---cyst-like infective stages
Figure 11.01
Monerans Eukaryotes
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Protozoan Feeding
phagocytosis
termite flagellate
has cellulase
to digest wood
swallows through cytosome
tentacles attach
prey & then suck
contents into ciliate
flagella
beating help
draw
suspended
particles
Figure 11.23
Ciliates
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Figure 11.24a
Trichocysts: defensive?
Paramecium fires trichocysts when attacked by Didinium
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Figure 11.25
spiral movement
avoidance reaction
Paramecium use of ciliary action
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Binary fission asexual reproduction
Conjugation Reproduction exchange of chromosome
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Contractile Vacuole Complex H2O /H+/HC03
- balance
Figure 11.16
Contractile Vacuole Complex H2O/H+/HC03
- balance
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Paramecium
9 + 2
microtubules
flagellates
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Figure 11.14
Euglena
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Figure 11.32
Termite flagellates containing cellulase
Trichomoniasis :
sexually transmitted disease
Figure 11.18
Colonial Flagellates--Choanoflagellates
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Figure 11.19
Figure 11.20
Volvox: colonial flagellate-photosynthesis
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Figure 11.21
Flagellates
Sleeping sickness
Giardia: backpacker’s
disease: diarrhea
Figure 11.29
Dinoflagellates
Red Tide
Tentacle: used
for feeding
Phagotrophic Autotrophic &
Phagotrophic
Autotrophic &
Phagotrophic
Cellulose
plates
No cellulose
plates
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amebas
Figure 11.12
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Figure 11.06
naked ameba
lobopodia
filopodia recticulopodia
shelled amebas
shelled amebas
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amebas with thin axopodia
Figure 11.13
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Binary Fission
Amoeba
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Radiolarians
Foraminiferans: shell/test contributing to CaCO3 in oceans
Shelled amebas
Sporozoans
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Figure 11.31
Plasmodium malaria
Toxoplasma gondii
Pregnant women cautioned to change cat litter
sporozoan can infect fetal brain tissue
infected children impaired vision & mental retardation
