Plant like protists and plantae algae

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Plant like protists and plantae algae

  1. 1. Plant-like Protists Unicellular Algae
  2. 2. Characteristics  Photosynthetic  Mostly unicellular  Single-celled (euglenoids, dinoflagellated, diatoms)  Multicellular algae (red and brown) under Plantae  Both uni and multicellular- green algae
  3. 3. Characteristics  Mostly motile (phytoflagellates)  Classification based on their pigments and internal chemistry; structure  Thrive in water and damp places  Sometimes classified as plants
  4. 4. Taxonomy  Phylum Euglenophyta  Phylum Pyrrophyta  Phylum Bacillariophyta
  5. 5. Phylum Euglenophyta
  6. 6. Phylum Euglenophyta  Euglenophytes/euglenoids  Closely resemble zooflagellates (but have chloroplasts)  autotrophic  Animal-like movement- no cell wall  Pellicle- maintains cell shape, aids in movement
  7. 7. 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
  8. 8. Phylum Pyrrophyta
  9. 9. 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)
  10. 10. Pyrodinium bahanse var. compresa
  11. 11. Phylum Bacillariophyta
  12. 12. Phylum Bacillariophyta  Diatoms  Yellow or brown in color  Cell wall enriched w/ silica (SiO3)- 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
  13. 13.  Freshwater and marine (phytoplankton)  Diatomaceous earth (soil made of diatoms)
  14. 14. Phylum Chrysophyta
  15. 15. 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
  16. 16. Multicellular Algae Chlorophyta Phaeophyta Rhodophyta
  17. 17. Phylum Chlorophyta Unicellular Green Algae
  18. 18. Colonial Green Algae
  19. 19. Filamentous Green Algae
  20. 20. Multicellular Green Algae
  21. 21. Phylum Phaeophyta
  22. 22. Phylum RhodophytaPhylum Rhodophyta

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