Differentiation plants - biology encyclopedia - cells, Differentiation in plants refers to the processes by which distinct cell types arise from precursor cells and become different from each other.. Roots - plant phys, Roots root functions. water uptake: roots take water from the capillary spaces between soil particles. this function is carried out by the young portions of the roots. Science paper-7 time allowed: 3 hours maximum marks: 90, Science paper-7 time allowed: 3 hours maximum marks: 90 general instructions: 1. the question paper comprises of two sections, a and b you are to attempt.