question_answer

  What causes tendril to encircle or coil around the object in contact with it? Explain the process involved. or How do auxins promote the growth of a tendril around a support? Describe in brief.

Answer:

                  The tendrils are sensitive to touch. When these tendrils come in contact with a support, the auxin diffuses towards the other side away from the support. Thus, this part grows more rapidly than the other. This causes the tendril to circle around the support and thus climb upwards.                                                 (2)