Question

Ali has some pea plants in his garden which need a support to grow as seen in the picture given below:

1. Name the phenomenon depicted by the shoot in the given figure.
2. Define the above phenomenon.
3. Write the name of the part marked X.

Answer 1

1. Thigmotropism. Tendrils coiling towards objects they come into contact with show thigmotropism.
2. In plants, thigmotropism is a tropic movement in response to an external stimulus, sometimes referred to as a contact stimulus.
3. The part marked X is Leaf Tendril.