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Diversity in Organisms

  • Diversity: It refers to the variety and variability among living organisms from all sources including land, water, and other ecosystems.
  • Classification 
    • It refers to the identification, naming, and grouping of organisms into a formal system based on similarities in internal and external structures or evolutionary history
    • It helps in organising the diversity of life forms in detail. 
    • Characteristic - A feature that helps identify or describe a person or a thing
    • There are certain characteristics that are considered more fundamental than others. These fundamental characteristics make broad divisions in living organisms. 

 

  • Principles of classification
    • Nature of cell (Fundamental characteristic): On the basis of the nature of cell, living organisms are classified as: prokaryotes and  eukaryotes
    • Cellularity: On the basis of cellularity, organisms are classified as: unicellular and multicellular
    • Mode of nutrition: On the basis of mode of nutrition, organisms are classified as: Autotrophs and heterotrophs

 

 

  • Nomenclature
    • The process to standardise th…

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