Question

Which is an example of thigmotropism?

Answer 1

Answer:

Letter  A

Explanation:

Thigmotropism is the movement as response to a physical stimulus, usually the contact with a solid object or surface. Climbing vines are the only example of this.

Blooming flowers are an inner response of the plant-

Bending toward the light responds to a different kind of stimulus, the light.

Leaf abscission is the consequence of maturity of the plant.

Answer 2

Answer A, climbing vines. Thigmotropism is growth in response to mechanical contact.