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Plant like protists and plantae algae






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    Plant like protists and plantae algae Plant like protists and plantae algae Presentation Transcript

    • Plant-like Protists Unicellular Algae
    • Characteristics
      • Photosynthetic
      • Mostly unicellular
        • Single-celled (euglenoids, dinoflagellated, diatoms)
        • Multicellular algae (red and brown) under Plantae
        • Both uni and multicellular- green algae
    • Characteristics
      • Mostly motile (phytoflagellates)
      • Classification based on their pigments and internal chemistry; structure
      • Thrive in water and damp places
      • Sometimes classified as plants
    • Taxonomy
      • Phylum Euglenophyta
      • Phylum Pyrrophyta
      • Phylum Bacillariophyta
    • Phylum Euglenophyta
    • Phylum Euglenophyta
      • Euglenophytes/euglenoids
      • Closely resemble zooflagellates (but have chloroplasts)
      • autotrophic
      • Animal-like movement- no cell wall
        • Pellicle- maintains cell shape, aids in movement
    • Euglena
      • A long cell with a pouch that contains two flagella at its interior end for swimming can rapidly change shape and crawl along a surface
      • Red eyespot (photosensitive)
      • 10-20 chloroplasts
      • Autotrophic but also heterotrophic (saprobic)
      • Reproduces asexually through binary fission
    • Phylum Pyrrophyta
    • Phylum Pyrrophyta
      • Dinoflagellates
      • Mostly photosynthetic
      • Possess 2 flagella (one is like a belt, other like a tail)
      • Many are surrounded by thick plates
      • Many are luminescent – fire plants
      • Reproduce asexually by binary fission
      • DNA w/o histones (only eukaryote)
    • Pyrodinium bahanse var. compresa
    • Phylum Bacillariophyta
    • Phylum Bacillariophyta
      • Diatoms
      • Yellow or brown in color
      • Cell wall enriched w/ silica (SiO 3 )- shaped like two sides of a petri dish
      • Many are capable of gliding motion
      • Food reserves in the form of oil
      • Reproduce asexually, can form cysts (resistant stage); sexual reproduction is uncommone
      • Freshwater and marine (phytoplankton)
      • Diatomaceous earth (soil made of diatoms)
    • Phylum Chrysophyta
    • Phylum Chrysophyta
      • Golden algae (yellow green, golden-brown)
      • Possess gold-green chloroplasts (xanthophyll)
      • Extemely diverse
      • Mostly solitary, some can form thread-like colonies
      • Cell wall made of pectin
      • Store food in the form of oil
      • Reproduce both sexually and asexually
    • Multicellular Algae Chlorophyta Phaeophyta Rhodophyta
    • Phylum Chlorophyta Unicellular Green Algae
    • Colonial Green Algae
    • Filamentous Green Algae
    • Multicellular Green Algae
    • Phylum Phaeophyta
    • Phylum Rhodophyta