Keep some freshly cut flowers in a solution of food colour. Wait for sometime for the dye to rise in the flower, when the stem of the flower is held up in light, coloured strands can be seen inside. Can this experiment demonstrate which tissue is conducting water up the stem?

Question

Philoid · Accepted Answer

This experiment can demonstrate which tissue is conducting water up the stem. Coloured strands are indicative that the food colour has been conducted upwards through a conducting vessel which is the xylem. We know how xylem conducts water upwards. This can be confirmed under the microscope to see the structure of the xylem. Plants contain xylem vessels from the roots to the tips of the leaves.