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 Explain the importance of soil for plant growth.

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Importance of soil for plant growth:

  1. Soil provides the point of anchorage for all the plants as the roots here extend outwards and downwards.
  2.  Soil is the reservoir for water and minerals (raw material for photosynthesis) which are essential for all the metabolic activities of a plant. 
  3.  Roots of plants absorb oxygen diffused in soil for respiration purposes.
  4. Some plants have symbiotic relationships with bacteria and fungi in soil to fulfil their nitrogen requirements. E.g. mycorrhiza.
  5. Soil particles contain water, which moves through the plant via roots. It helps to maintain the cell size and serves as a raw material for photosynthesis. Photosynthesis is a process in which plants capture light energy to manufacture sugars.
  6. Soil helps in temperature modification during excessive hot or cold weather.
     
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