How is sugar produced in a palisade cell reach the roots?
translocated in the form of sucrose in the phloem. in the phloem starch produced in the cells is loaded in the form of sucrose actively, dye to increase in solute concentration water is sucked from xylem now at the source water potential is high while at the sink water potential is low so sucrose moves from source to sink and there it is converted into starch and unloaded in the cell actively due to which water is also unloaded in the xylem, sugar is translocated in the form of sucrose because it is non-reactive and non-reducing so it does react with other things during translocation.