Pole beans need something to grow around and up. Whcih kind of stimuli can encourage this type of growth? A. Water B. Gravity C. Light D. Touch

Answer 1

D. Touch can encourage pole beans to grow around and up. Pole beans are climbing plants that require support to grow vertically. When the plant comes in contact with a support structure, it will begin to wrap its stem around it and continue to grow upward. This response to touch is known as thigmotropism.