Ocean plankton that make mineral shells north sea oil

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Ocean plankton that make mineral shells North Sea oil deposits Foraminifera used to infer past climates
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26 Fig 28.14
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27 Amoebozoa Many types of amoebae Move using pseudopodia Entamoeba histolytica Slime molds Dictyostelium discoideum Under starving conditions, produce 'fruiting bodies' like fungus
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28 Opisthokonta Named for single posterior flagellum on swimming cells Animal and fungal kingdoms Choanoflagellate protists Feature distinctive collar surrounding flagella Modern protists most related to the common ancestor of animals
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29 Fig 28.15
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30 4 basic types of nutrition Phagotrophy – heterotrophs that ingest particles (particle feeding) Osmotrophs – heterotrophs that rely on uptake of small organic molecules Autotrophs – photosynthetic (make their own nutrients) Mixotrophs – able to use autotrophy and phagotrophy or osmotrophy depending on conditions
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31 Fig 28.16
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32 Algal photosynthetic pigments Why is the ocean blue/green Variety of pigments Adapt photosystems to capture more light Water absorbs the longer red and yellow wavelengths more than the shorter blue and green wavelengths Accessory pigments absorb light and transfer it to chlorophyll a
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33 Defense Slimy mucilage or cell walls defend against herbivores and pathogens Calcium carbonate, silica, iron, manganese armor Trichocysts are spear-shaped projectiles to discourage herbivores Bioluminescence – startle herbivores Toxins – inhibit animal physiology Pfiesteria
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34 Asexual reproduction All protists can reproduce asexually Many produce cysts with thick, protective walls that remain dormant in bad conditions Many protozoan pathogens spread from one host to another via cysts
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35 Fig 28.18
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36 Sexual reproduction
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