Question

Ringing/girdling experiment was first performed by

• A. Hartig
• B. Strasburger
• C. Godlewski
• D. Bose

Answer 1

The correct option is A Hartig

Ringing or girdling experiment is a strategy was first performed by Hartig (1837) in which the outer tissues (bark) of a stem are detached, and leaving only the xylem and pith unharmed. Water transportation towards the stem is undisrupted, but transportation of food down from the leaves stops at the ring in this process. Swelling can be noticed just above the cut because of the accumulation of organic solutes that came from higher parts of the tree and could no longer continue downward due to the disruption of phloem. Finally, the part of the plant below the girdle died because it no longer receives food or sugar from the leaves. Sooner, the roots and the entire tree will die.

So, the correct answer is option A.