Intro

• Algae

  KINGDOM PROTISTA
• All members are composed of eukaryotic cells.
• Maybe single or multicellular, some occur as

  colonies or filaments, and some or coenocytic

  (multinucleate mass of cytoplasm)
• Size varies from microscopic to giants (up to

  75m in length)
• Some are autotrophs (photosynthetic), some

  are heterotrophs (produce food thru carbon

  fixation), some ingest their food, some can do

  both photosynthesis and ingest their food, and

  some absorbs food in solution.
• Life cycle varies, but reproduction is generally by cell division and sexual processes.
• Most single-celled protists are motile (flagella), most multi-cellular protists are non motile (though most can produce motile cells),
• ALGAE

  • (sing Alga) are diverse group of predominantly aquatic photosynthetic organisms of the Kingdom Protista.
  • grouped into several major phyla based on their form of reproductive cells and combinations or pigment and food reserves.
• EUGLENOPHYTA - EUGLENOIDS

  PYRROPHYTA - DINOFLAGELLATES

  PHAEOPHYTA - BROWN ALGAE

  CHLOROPHYTA - GREEN ALGAE

  RHODOPHYTA - RED ALGAE