Explain phosphorus cycle with suitable flow chart. Why phosphorus cycle is an imperfect cycle ?

Explanation

Phosphorus Cycle. The crystalline rocks are the major natural some° of phosphorus which on their weathering add phosphates to the soil. It it a sedementary cycle. The phosphates are also pot into the soil in the form of artificial fertilizers. These phosphates get dissolved in water and arc absorbed by plants via the roots. These are then passed to animals through food chains. The phosphates arc returned hack to the soil when bacteria and fungi decompose their excreta or their dead bodies (plants and animals ). However, sometimes inorganic phosphate molecules are released on the decomposition of the organic phosphate molecules:These are then incorporated with metals like aluminium iron or calcium and form the compounds which remain unavailable to plants and is, thus, lost to the cycle. Phosphorus present in bones .s and teed, also resistant to decay and may remain outside the natural cycle for a considerable time.

(b) It is called imperfect cycle because all the phosphorous is not recycled . Some simply drains off into lakes or oceans.