Master Whittaker's Classification System!
With millions of organisms on Earth, individual study is impossible! Classification helps us understand relationships between different groups. In 1969, Robert Harding Whittaker proposed the Five-Kingdom System based on cell structure, complexity, and nutrition mode.
Cell: Prokaryotic
Structure: Unicellular
Examples: Bacteria, Blue-green algae
Cell: Eukaryotic
Structure: Unicellular
Examples: Amoeba, Paramecium, Euglena
Cell: Eukaryotic
Structure: Mostly Multicellular
Nutrition: Heterotrophic (Saprophytic)
Examples: Mushroom, Yeast, Mold
Cell: Eukaryotic
Structure: Multicellular
Nutrition: Autotrophic
Examples: Mango, Grass, Rose
Cell: Eukaryotic
Structure: Multicellular
Nutrition: Heterotrophic
Examples: Lion, Earthworm, Butterfly
Prokaryotic, Unicellular
Eukaryotic, Unicellular
Heterotrophic, Saprophytic
Autotrophic, Multicellular
Heterotrophic, Multicellular
Classification Master! 🎉
Before Whittaker's system, organisms were only classified into 2 kingdoms - Plants and Animals!