Question
Biology Question on Nutrition
“Girdling Experiment” was performed by plant physiologists to identify the plant tissue through which:
A
Water is transported
B
Food is transported
C
For both water and food transportation
D
Osmosis is observed
Answer
Food is transported
Explanation
Solution
The girdling experiment involves the removal of the bark, which contains the phloem tissue, from the perimeter of a plant's trunk to determine which tissues are responsible for transporting food. As phloem tissue is located outside the xylem, removing a ring of bark from a woody plant leaves the xylem intact, allowing water and nutrients to reach the leaves.
However, because the phloem tissue is removed, there is no translocation of food.