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A shoot of seedling exposed to light on one side bends towards the source of light as it grows.
(a) Name the response exhibited by the shoot of the seedling
(b) Explain how the bending towards the source of light occurs.

Answer Text:
(a) Positive phototropism
(b) Light causes lateral migration of auxins hormones. They move or diffuse to the dark side away from the
light side causing elongation or more growth on the dark sides hence bending towards light.