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Algae: Plantlike Protists 19.2

Algae: Plantlike Protists 19.2. Characteristics of Algae Photosynthesizing Both uni and multicellular Contain chlorophyll and pigments that give them a variety of colors. Six Phyla of Algae Euglenoids Unicellular, aquatic protists Have both plant and animal characteristics

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Algae: Plantlike Protists 19.2

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  1. Algae: Plantlike Protists19.2

  2. Characteristics of Algae • Photosynthesizing • Both uni and multicellular • Contain chlorophyll and pigments that give them a variety of colors

  3. Six Phyla of Algae • Euglenoids • Unicellular, aquatic protists • Have both plant and animal characteristics • Move with flagella

  4. 2. Diatoms • “Golden Algae” • Unicellular, photosynthetic • Live in freshwater and marine ecosystems • Store food as oils instead of starches • Reproduce asexually

  5. 3. Dinoflagellates • Have cell walls • Come in a variety of shapes/styles (some look like helmets or suits of armor) • Most live in marine environments • Cause a “Red Tide”

  6. 4. Red Algae • Mostly multicellular marine seaweed • Have a body called a “thallus” • Live in deep water where other seaweed cannot survive

  7. 5. Brown Algae • Live in cool, marine waters • Have an air bladder to float on water’s surface • Ex. Kelp

  8. 6. Green Algae • Most diverse algae • Mostly live in fresh water (live in oceans, soil, tree trunks, snow, and fur of sloths • Reproduce sexually and asexually

  9. Fragmentation • Form of reproduction used by some green algae • An individual breaks into pieces and each piece grows into a new individual

  10. Alternation of Generation Life cycle pattern of some algae and all plants where the organism alternates between existing as a haploid and diploid; creating two different generations

  11. Gametophyte The haploid form of the organism; produces gametes Sporophyte The diploid form of the organism Page 516, Figure 19

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