Question

In a ring girdled plant

Answer 1

In a ring girdled plant root dies first

Answer 2

Answer:

In a ring girdled plant - The root dies first.

Explanation:

• In girdling or  ringing experiments, a ring of bark is cut from the stem. It also removes phloem.
• Nutrients collect above the ring, where the bark also swells up and may give rise to adventitious roots. Growth is also vigorous above the ring.
• The tissues below the ring not only show stoppage of growth but also begin to shrivel.
• Roots can be starved and killed, if the ring is not healed after some time.
• Killing of roots shall kill the whole plant, clearly showing that bark or phloem is involved in the movement of organic solutes towards root.