How do tendrils respond to touch?

Tendrils respond to touch through a process known as thigmotropism, where they undergo rapid growth changes upon contact with an object. When a tendril touches a support, it stimulates the cells on one side to elongate more than those on the opposite side, causing the tendril to curl around the support. This response helps the plant secure itself and climb, maximizing its access to sunlight and resources. Overall, this tactile response is crucial for the plant's survival and growth in its environment.