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Algae

Algae. ALGAE. Similarities and difference to higher plants. Similarities. Presence of cell wall—mostly cellulosic. Autotrophs/Primary producers—carry out photosynthesis Presence of chlorophyll a. Differences.

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Algae

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  1. Algae

  2. ALGAE Similarities and difference to higher plants

  3. Similarities • Presence of cell wall—mostly cellulosic. • Autotrophs/Primary producers—carry out photosynthesis • Presence of chlorophyll a

  4. Differences • Algae lack the roots, stems, leaves, and other structures typical of true plants. • Algae do not have vascular tissues—non vascular plants • Algae do not form embryos within protective coverings—all cells are fertile. • Variations in pigments. • Variations in cell structure—unicellular, colonial and multicellular forms.

  5. Mostly Algaes SupergroupExcavata Kingdom Euglenozoa (euglena) Supergroup “SAR” Clade Kingdom Stramenopila Phylum Chrysophyta (golden algae) Phylum Phaeophyta (brown algae) Phylum Heterokontophyta/Bacillariophyta (diatoms) Kingdom Alveolata Phylum Dinoflagellata (dinoflagellates) Kingdom Rhizaria (rhizarians) Phylum Radiolaria Phylum Foraminifera SupergroupArcheoplastida Kingdom Rhodophyta (red algae) Viridiplantae Kingdom Chlorophyta (green algae) Kingdom Charophytes Kingdom Plantae (embryophytes)

  6. Supergroups Euglenoids Excavata diatoms, golden and brown algae SAR: Stramenopila dinoflagellates SAR: Alveolata Forams and radiolarians SAR: Rhizaria Red and green algae Archaeoplastida Slime molds Unikonta

  7. Algal Slides to examine • Diatoms • Peridinium • Ceratium • Spirogyra • Chlamydomonas • Volvox

  8. Excavata Euglenoids

  9. SAR: Stramenopila Phylum Bacillariophyta: Diatoms Thecate- with shell Athecate- naked 2 kinds: centric (circular) and penate (oblong) Frustule (silica shell) centric pennate

  10. SAR: Stramenopila Diatoms

  11. Diatom Reproduction- asexual epithecate hypothecate auxospore Discards shell and grows new one

  12. SAR: Stramenopila Diatoms Dividing frustule Sexual reproduction Asexual reproduction

  13. Padina japonica Turbinaria ornata SAR: Stramenopila Phaeophyta: Brown Algae Hydroclathrus clathratus Sargassum echinocarpum Sargassum polyphyllum

  14. SAR: Stramenopila Kelp

  15. Phylum Pyrrophyta: dinoflagellate SAR: Alveolata • Single-celled eukaryote • Animal/plant type organism with 2 flagella • Bioluminescence • Zooxanthellae: Symbiodinium Ceratium

  16. Spirogyra Archaeoplastida

  17. Chlamydomonas Archaeoplastida

  18. Volvox Archaeoplastida

  19. Halimeda opuntia Caulerpa sertularioides Chlorophyta: Green Algae Archaeoplastida Codium edule Caulerpa racemosa Dictyosphaeria cavernosa

  20. Rhodophyta: Red Algae Hypnea chordacea Ahnfeltia concinna Acanthophora spicifera Galaxaura fastigiata Archaeoplastida Asparagopsis taxiformis

  21. Algal Products • Thickener and help smooth: • Many foods and milk-products • Toothpaste • Beauty creams • Paints • Medical products- like bacterial culture plates, time-release pills, and dental impression gels

  22. Herbivores

  23. Halimeda opuntia Algal Invaders Acanthophora Gracilaria Hypnea Avrainvillae Kappaphycus Eucheuma

  24. Super Sucker

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