Botany Study Guide - Domain Bacteria Characteristics Lack...

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Domain Bacteria Characteristics Lack membrane bound organelles DNA is in cytoplasm Prokaryotic Asexual Reproduction, no meiosis Nonmotile Heterotrophic Division Cyanobacteria Characteristics Chlorophyll A Accessory pigments phycobilins and carotenoids –blue green color Ubiquitous Asexual reproduction, fragmentation often occurs at heterocysts (N fixation) and akinetes (overwintering) Reserve photosynthate Cyanophycean Starch
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Domain: Bacteria Division: Cyanobacteria Anabeana Unicellular, looks multicellular Vegetative specialized cells heterocysts- round, has solid center Form with Nitrogen lacking environments Nitrogen Fixation- form N into Nitrate, Nitrite for plant use akinete- large, granular, thick wall overwintering structure becomes dormant til favorable conditions return
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Domain Eukarya Kingdom Protista Characteristics Tend to be aquatic Majority are unicellular Motile stage in life Eukaryotes Involve both cell division and sexual reproduction Lack Fungi, animalia, and plantae characteristics Division Chlorophyta Characteristics (green algae) Cellulose cell walls Chlorophyll a & b Reserve photosynthate Starch 2-4 Apical to subapical flagella ubiquitous
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Domain: Eukarya Kingdom: Protista Division: Chlorophyta Chlamydomas Fresh water Unicellular Light sensitive eyespot Loses cell wall and functions as gamete to give a diploid zygote Sexual reproduction in adverse environment (Nitrogen lacking) Zygotic meiosis
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Domain: Eukarya Kingdom: Protista Division: Chlorophyta Volvox Colonial organism Multicellular, individual cell looks like chlamydomonas division of labor, flagella move and spin organism clockwise Asexual Reproduction in favorable environments daughter colonies by mitosis secretes enzyme , releases daughter colonies has to invert itself so flagella are on the outside to move flagellated sperm oogamous gametes Zygotic meiosis
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Domain: Eukarya Kingdom: Protista Division: Chlorophyta Spirogyra Spiral chloroplasts Multicellular Asexual in favorable environments Fragmentation Degeneration of haploid cells genetic diversity Zygotic Meiosis
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Domain: Eukarya Kingdom: Protista Division: Chlorophyta Hydrodycton “water net” Has a siphon tube structure Coenocytic- multinucleic, more than one nucleus in each cell simplecomplex morphology colonial filaments tubular unicellularmulticellular Motile cells nonmotile cells
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Kingdom Protista Division Phaeophyta Characteristics (brown algae) Chlorophyll a & c, fuxoxanthin (pigment characteristic brown color) Cellulose and alginic acid cell wall Reserve photosynthate Laminarin (glucose like) 2 lateral flagella Morphology: holdfast (anchor), blade, stipe, air bladders Found in cold, marine waters multicellular
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Domain: Eukarya Kingdom: Protista Division: Phaeophyta Ectocarpus Characteristic brown color Sporic Meiosis Isomorphic Alternation of Generations Sporophyte and Gametophyte look similar Plurilocular Sporangium and Plurilocular Gametangium look alike makes hard to differentiate asexual and sexual Unilocular sporangia is found in sexual reproduction Asexual gives more gametophytes happens more
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