Classification of Living organisms

• Main differences in characteristics

  • Size
  • Shape
  • Structure
  • Metabolism
  • Life cycle
• Five Kingdoms

  • Prokaryote
  • Eukaryotes
  • Protoctista
  • Fungi
  • Plantae
  • Animalia
• Carolus Linnaeus is the Father of Classification.
• Carolus Linnaeus proposed the Two kingdom System: Plantae and Animalia in 1758.
• Euglena, a Unicellular organism possess animal characteristic and contained Chlorophyll and the two system fell.
• In 1982, Margulis and Schwartz proposed a modified system using 5 kingdoms, the prokaryotae and four Eukaryote.
• The five system was based off of these three criteria:

  1. Cell structure of organism
  2. Body structure of organism
  3. Mode of nutrition of organism