The mechanism that causes a vine's tendrils to grow around an object,such as a wire fenceline,is called ____.
A) thigmotropism
B) phototropism
C) gravitropism
D) vernalization
E) photoperiodism

Question

The mechanism that causes a vine's tendrils to grow around an object,such as a wire fenceline,is called ____.  
A) thigmotropism
B) phototropism
C) gravitropism
D) vernalization
E) photoperiodism

Quizplus · Accepted Answer

Thigmotropism is the movement or growth of a plant in response to touch or contact with an object. In the case of vines, the tendrils will grow and wrap around an object such as a wire fence through thigmotropism. Phototropism is the growth or movement of a plant in response to light, gravitropism is the growth or movement of a plant in response to gravity, vernalization is the process of a plant requiring cold temperatures to initiate flowering, and photoperiodism is the response of a plant to changes in the length of day and night. None of these mechanisms are specifically related to the growth of vines around an object.

The Mechanism That Causes a Vine's Tendrils to Grow Around