How are Phosphorus and Sulphur carried in Xylem?

How are Phosphorus and Sulphur carried in Xylem?
  1. As Inorganic salts
  2. They are travelled by phloem and not Xylem
  3. As organic Compounds
  4. None of the above

Solution

An analysis of the xylem exudates shows that though some of the nitrogen travels as inorganic ions, much of it is carried in the organic form as amino acids and related compounds. Similarly, small amounts of P and S are carried as organic compounds.

Asked in: NCERT

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