Q.
The diagram given below represents the simple ringing or girdling experiment. Bark containing phloem is removed. This experiment proves and justify that phloem is the path for translocation of food. In the given diagram, swollen part of stem has been indicated. What is cause of swollen part?
Choose the correct option
A) Accumulation of food material just above the ringing space
B) Accumulation of minerals and water just above the ringing space
C) A repairing mechanism is taken
D) Injured part undergo turgor change
Explanation
In Girdling or ringing experiment, the path of organic nutrients in the stem of plant is represented, which is carried out by phloem. In the experiment, a ring of bark along with phloem is cut from the stem. Due to the absence of phloem in the ringing part, translocation of food does not takes place and the same is accumulated above the ring. Bark also swells up and may give rise to adventitious roots
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.