Created by StemPy LabA gardener cuts off the top of a young hedge shoot, and the hedge becomes bushy. Which statement explains this best?
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← Skoog and his co-workers found that tobacco tissue divided only when a substance from a certain source was added. What was the source of the substance, later named kinetin?A plant growth regulator is made from carotenoids. It closes stomata when water is short, and it helps seeds to survive drying. Which one is it? →
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