kingdom classification

• Bacteria and blue-green algae

  • Eukaryotic features
  • Nuclei + internal membrane bound organelles but lacking specialised tissues
• Protoctisans


  Eukaryotic unicellular organisms, some may be multicellular
• Fungi


  • Many are unicellular but others are organised into filaments with cells joined end to end in a long thread structure, e.g. hyphae of green seaweed
• Heterotrophic


  Requires organic compounds of carbon and nitrogen for nourishment
• Autotrophic


  Organisms which can make complex organic compounds from simple inorganic sources by photosynthesis
• Organisms in this kingdom


  • Protozoa
  • Algae
  • Dinoflagellates
  • Diatoms
  • Slime moulds