Assertion (A): Much of the nitrogen and small amounts of phosphorus and sulphur are carried in the organic form through the xylem.
Reason (R): Xylem transports only inorganic nutrients and phloem transports only organic nutrients.
Assertion (A): Much of the nitrogen and small amounts of phosphorus and sulphur are carried in the organic form through the xylem.
Reason (R): Xylem transports only inorganic nutrients and phloem transports only organic nutrients.
The correct option is C A is true and R is false
Much of the nitrogen and small amounts of phosphorous and sulphur are transported as amino acids and other related compounds in the plant system. Organic compounds and solutes are mostly transported through the phloem. However xylem sap analysis does reveal the presence of trace amounts of sugars, many amino acids and other organic compounds. Especially compounds of nitrogen, phosphorous and sulphur are absorbed and transported through the xylem. The relative concentration of organic molecules in the xylem, to that in the phloem is nevertheless, very little.
A is true and R is false
Much of the nitrogen and small amounts of phosphorous and sulphur are transported as amino acids and other related compounds in the plant system. Organic compounds and solutes are mostly transported through the phloem. However xylem sap analysis does reveal the presence of trace amounts of sugars, many amino acids and other organic compounds. Especially compounds of nitrogen, phosphorous and sulphur are absorbed and transported through the xylem. The relative concentration of organic molecules in the xylem, to that in the phloem is nevertheless, very little.
