Today the Grade 3’s investigated the role of the stem of a plant. The students took the celery that had been placed in water with food colouring for 5 days, cut the celery (cross section), and observed the change in colour of the xylem of the stem. After examining their stems, the students concluded that the xylem of the stem transports water and nutrients from the roots to the leaves as the water with food colouring traveled from the cup, up the stem, and to the leaves of the celery plant.