1. Water plays an important role in living organisms.
2. About 90 – 95% water is present in cell which is functional and structural unit of living organisms.
3. It helps in maintaining turgidity and shape of cells and cell organelles.
4. Due to its various properties, it is medium of biochemical reactions, transporting medium and thermal buffer also.
5. Therefore it is absolutely necessary for life i.e. ‘elixir of life’.