Sunflower

The sunflower is an annual plant in the family Asteraceae and native to the America. Sunflowers in the bud stage exhibit heliotropism. At good sunrise, the faces of most sunflowers are turned towards the east. Over the course of the day, they follow the sun from east to west, while at night they return to an eastward orientation. (Taken from www. wikipedia.org and www.flick.com)