Respuesta :

Most of the dry mass of a plant is the result of uptake of carbon dioxide through stoma

Explanation:

  • The dry mass of a plant is the mass or weight of the plant after all its water components have been removed through the drying process.
  • Generally, the mass of any plant comes from the carbon assimilated from atmospheric carbon dioxide absorbed during photosynthesis.  
  • During photosynthesis, the carbon from CO2 settles in glucose molecules, each of which contains 6 carbon atoms.
  • Once the plants use up carbon for various metabolic activities and the remaining are used for building up of structural parts like leaves, stem etc.
  • Plants use up all the remaining carbon atoms in leftover glucose to increase its biomass.
  • Hence after drying up also, the dry mass of the plants contain carbon due to uptake of carbon dioxide

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