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What is Biology? – Full Notes

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What is Biology?

Biology is the natural science that studies life and living organisms. The word biology is derived from the Greek words bios (life) and logos (study).

Definition

Biology is the branch of natural science that studies life, living organisms, their structure, function, growth, evolution, distribution, and taxonomy.

Key Points

  • Biology deals with both plants and animals
  • It covers microscopic organisms like bacteria and viruses
  • It includes macroscopic organisms like elephants and whales
  • Modern biology has many sub-disciplines

Importance of Biology

Biology helps us understand the natural world around us. It forms the basis for medicine, agriculture, environmental science, and biotechnology.

Biology is the study of complicated things that give the appearance of having been designed for a purpose. — Richard Dawkins
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Updated: 24 Aug 2026
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