A . Much of nitrogen in xylem sap is carried in organic form.
B. In phloem , movement of nutrients is always unidirectional .

Movement of substances in xylem is unidirectional. Explain.

The translocation in phloem is unidirectional whereas in the xylem it is bidirectional.

The movement is always _______ in xylem .

Assertion . Movement of materials inside phloem is bidirectional, both upwards and downwards Reason. Movement of molecules inside xylem is unidirectional always upwards

Assertion . Movement of materials inside phloem is bidirectional, both upwards and downwards Reason. Movement of molecules inside xylem is unidirectional always upwards

Assertion . Movemant of materials inside phloem is bidirectional, both upwards and downwards Reason. Movement of molecules inside xylem is unidirectional always upwards

Amount of secondary xylem as compared to secondary phloem formed every year is