Dear student,
Translocation is the process of movement of materials from leaves to all other parts of the plant body. Leaves of the plants perform photosynthesis and produce carbohydrates (organic solutes) which are translocated to the non photosynthetic parts (roots, flowers, fruits) of the plant through special tissues called phloem.
Minerals are actively taken through the roots from the soil and is translocated mostly through xylem while organic nutrients are synthesised in the green part of the plants and are translocated mostly through phloem.
Regards