(a) Thigmotropism/ haptotropism
(b) Auxin migrate away from the point of contact; less auxins causes less elongation leading to less growth; The side further away from point of contact has higher concentration of auxins leading to more elongation hence more growth and stem curves/ twines along the supporting structures.
johnmulu answered the question on May 19, 2017 at 06:43
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Date posted: May 19, 2017. Answers (1)
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