Plants Find Light Using Gaps Between Their Cells

On a shelf lined with terra cotta pots, herbs bend their stems toward the nearest window. In a field of golden wildflowers, leaves rotate with the path of the sun. In a dappled forest, vines twine up trees, reaching ever upward and away from the dark. Since ancient times, plants’ ability to orient their eyeless bodies toward the nearest, brightest source of light — known today as phototropism...


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