What criteria do we use to decide whether something is alive?


Any visible movement such as walking, breathing, or growing is generally used to decide whether something is alive or not. However, a living organism can also have movements, which are not visible to the naked eye.  Therefore, the presence of life processes is a fundamental criterion that can be used to decide whether something is alive or not.

Evidence which can ensure something is alive or not

  • Shape and Dimension
  • Reproduction
  • Growth
  • Cellular structure
  • Metabolism
  • Movements
  • Self-regulations
  • Variation
  • Coordination
  • Definite life cycle
  • Death

Example – Movements are fast in most animals, but motions in plants are generally slow.

Articles to refer

  1. Living Things
  2. Living And Non-Living Things


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  1. Thank you so much❤
    It helped me a lot💜

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