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Supergroup Chromoalveolata, Group Alveolata
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Have small internal membrane bound cavities under plasma membrane. monophyletic groupd. som photosynthetic, parasitic, heterotrophic
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Supergroup Chromoalveolata, Group Alveolata,
Subgroup Dinoflagellata
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Autotrophic or mixotropich. fresh and marine phytoplankton. carotenoid pigments in plastids cause water to be red, produces neurotoxin. most have two flagella, cellulose plates of thecae
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Supergroup Chromoalveolata, Group Alveolata,
Subgroup Dinoflagellata, what species was looked at?
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 Peridinium |
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Supergroup Chromoalveolata, Group Alveolata, Subgroup Apicomplexa. What species was looked at? what does its lifecycle llok like?
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 Plasmodium, vector anopholes. looked at blood smear taken from malaria victim. |
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Supergroup Chromoalveolata, Group Alveolata, Subgroup Ciliophora. What species?
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 Paramecium. move by cilia. have macronucleus and several micronuclei, reproduce by binary fission asexually. and sexual reprod. for genetic variation>conjugation |
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What does conjugation look like?
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 Sexual |
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What do contractile vacoules of paramecium do?
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The expel excess water which prevents them from lysing
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Where do food vacoules of paramecium develop?
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Near lysosomes and on the curve so that food is directed to its mouth at the base of the oral groove. undigested material is expelled out anal pore.
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Supergroup Chromalveolata, Group Stramenopila,
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-"pila" hair-like projections.
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Supergroup Chromalveolata, Group Stramenopila,
Subgroup Bacillariophyta (diatioms)
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Most numerous phytoplankton. cell wall has two valves made of silica. form diatomaceous earth
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Diatomaceous earth uses?
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Tooth paste, facial scrub - silica
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Supergroup Chromalveolata, Group Stramenopila,
Subgroup Phaeophyta (brown algae)
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Most complex protists. large bull kelp (Nereocystis) have holdfast, stipe, blades
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Supergroup Chromalveolata, Group Stramenopila, Subgroup Oomycota (water moulds). How are they similar and different to fungi?
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Important decomposers. Saprolegnia ferax. (1)
water mouls have multinucleate filaments (hyphae) that resemble fungi hypahe. (2) heterotrophs (3) molds have centrioles and cellulose and flagella - fungi have chitin
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What protists move using pseudopodia?
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Foraminferans, radiolarions and amoebozoans
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Supergroup Rhizaria, Group forminifera.
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Marine, shelled protists. have thin pseodopodia extend from pores (forams). Shells (tests) are multi-chambered contain calcium carbonate. form marine deposits. snail like
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