|Sunflowers In The Garden At Petit Gennevilliers, Gustave Caillebotte, 1885|
Something as commonly observable as sunflowers following the sun is difficult to explain.To read the rest, follow the link to "Sunflower Motion Is a Black Box".
Even children can notice that plants follow the sun throughout the day. This phenomenon, given the fancy name “heliotropism” (attraction to the sun) has been known for centuries, but is still a “black box,” plant scientists admit. PhysOrg reports on botanists who have experimented with sunflowers, trying to understand the mechanisms that guide their bright yellow flowers toward the light.