Question
Write short notes: Theory of evolution.

Answer

  • According to the theory of evolution, first living material was in the form of protoplasm which was formed in ocean.
  • Gradually, it gave rise to unicellular organisms. Changes took place in these unicellular organisms which made them evolve into larger and more complex organisms.
  • All evolutionary changes were very slow and gradual taking about 300 crore years to happen.
  • Different types of organisms were developed as the changes and development that occurred in living organisms was all round and multi-dimensional.
  • Hence, this overall process of evolution is called organizational and progressive.
  • Variety of plants and animals developed from the ancestors having different structural and functional organization during the process of evolution.

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