Ch. 28 Bio. – Flashcards
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Plastids that are surrounded by more than two membranes are evidence of:
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secondary endosymbiosis.
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Biologists suspect that endosymbiosis gave rise to mitochondria before plastids partly because:
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all eukaryotes have mitochondria whereas many eukaryotes do not have plastids.
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Which group is incorrectly paired with its description?
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red algae--acquired plastids by secondary endosymbiosis.
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Which protists are in the same eukaryotic supergroup as land plants?
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Green and red algae.
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In life cycles with an alternation of generations, multicellular haploid forms alternate with:
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multicellular diploid forms.
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Phylum Diplomonada:
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Ex. Giardia lamblia (causes giardiasis. anaerobic, lack mitochondria.
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Phylum Euglenophyta:
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very diverse group. Ex. Euglena. freshwater.
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Phylum Dinoflagellata:
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Ex. Gonyaulax, Nocticula, Pfiesteria piscicida. (red tide)
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Phylum Apicomplexa:
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Ex. Plasmodium (causes malaria). animal parasites.
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Plasmodium:
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causes malaria. mosquito vector.
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Phylum Ciliophora:
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Ex. Paramecium, Stentor, Vorticella. use cillia to move, have both macro and micro nucleus.
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Phylum Oomycota:
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Ex. Saprolegnia. Can have a big impact on human food
source. decomposers or parasites.
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Phylum Bacillariophyta:
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diatoms used for glass-making.
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Phylum Chrysophta:
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Ex. Dinobryon. golden algae.
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Phylum Phaeophyta:
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Ex. Postelsia. largest algae, multi-cellular.
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Phylum Rhizopoda:
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Amoebas
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Entamoeba
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Causes amebic dysentery (phylum rhizopoda)
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Phylum Zoomastigophora:
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Ex. Trypanosoma,Leishmania
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Trypanosoma:
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Causes African sleeping sickness• Vector is tsetse fly
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Leishmania
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Causes Leishmaniasis• Transmitted by sand flies
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Phylum Chlorphyta:
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Ex. Volvox, Chlamydomonas. sea lettuce.