Question

How minerals ions are translocated?

Answer 1

mineral ions are translocated by the plant tissue called xylem. xylem uses two strateges to do this--
1. root pressure
2. transpirational pull theory

Answer 2

$\large{\underline{\rm{\pink{Translocation\:of\:mineral\:lons:-}}}}$

→ The ions reached in xylem are further transported to all parts of the plant through the transpiration stream.

→ The chief sinks for the mineral elements are as follows:-

o Growing regions such as apical and lateral meristems.

o Young leaves.

o Developing flowers, fruits and seeds.

o Storage organs.

→ Unloading of mineral ions occurs at the fine vein endings through diffusion and active uptake by these cells.

→ Mineral ions are also frequently remobilized, particularly from older, senescing parts to younger leaves.

→ Elements most readily mobilized are phosphorus, sulphur, nitrogen and potassium.

→ Some of the nitrogen travels as inorganic ions while most of it is carried in the organic form such as amino acids and related compounds.

→ Small amounts of P and S are also carried as organic compounds.

→ There is also exchange of materials between xylem and phloem.

→ Hence, we cannot clearly say that xylem transports only inorganic nutrients while phloem transports only organic materials.