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Diversity in Living Organisms

Diversity in Living Organisms Synopsis



  • The variety in living organisms existing on the Earth is called biodiversity. 
  • The term biodiversity was coined by Walter G. Rosen in 1896.
  • India is one of the 12 mega biodiversity countries in the world. It has a rich and a diverse biodiversity with several habitats, ranging from tropical rainforests to deserts to alpine vegetation.


 Importance of Biodiversity

  • Biodiversity is important for the survival of all living beings. 
  • Every living organism depends on other organisms for its basic necessity of food. 
  • All living creatures are supported by the interactions among organisms and their immediate environment. 
  • A biologically diverse natural environment provides human beings with their necessities of life and forms the basis of the economy. 
  • It is very important to conserve the vast biodiversity which exists on this planet not only because it provides services to humans but also because it helps us in many ways such as pollination, nutrient cycling and regulation of the atmosphere and climate.
Basis of Classification  
  • The system of sorting living organisms into various groups based on their characteristic similarities and differences is called classification.
  • To make relevant groups to study various forms, it is important to decide which characteristics decide more fundamental differences. This creates main broad groups of organisms. 
  • Within these groups, smaller sub-groups are decided by less important characteristics. This is called hierarchy of characteristics.
  • The similarities, differences and the variety among living organisms can be used as criteria for their classification.