Botany - Transport in Plants Question with Solution | TestHub

Girdling experiment is a process used to identify the tissues involved in food transport. On the trunk of a tree a ring of barkup to a depth of the phloem layer is removed. It was observed that downward movement of food was not there, the portion of the bark above the ring on the stem became swollen after few weeks. This showed that phloem is the tissue responsible for translocation of food.