Why Do Sunflowers Face the Sun?

Answer

Sunflowers face the sun due to their ability of 'heliotropism' or sun-tracking. Sunflowers have a hydraulic system in the stem which enables them to turn in the direction of the sun. Water builds up on the shady side of the stem, leading to pressure which causes the head to arc toward the light.
Q&A Related to "Why Do Sunflowers Face the Sun"
When sunflowers are growing, their flower heads move from east to west daily, tracking the sun. This tracking is called heliotropism. At night, sunflowers return to face east and
http://www.ehow.com/info_8377652_sunflowers-face-t...
This is due to the presence of a growth hormone auxin. When the stem tip receives sunlight, the concentration of auxin increases in the shaded side. Thus the young and fast growing
http://wiki.answers.com/Q/How_do_sunflowers_always...
When the plant is in the bud stage, it tends to track the movement of the sun across
http://www.chacha.com/question/why-do-sunflowers-f...
Most plants do that. It is beneficial for the plants to grow where the sun hits them, because that is where they get their energy from, so over time, plants evolved to do that sort
http://answers.yahoo.com/question/index?qid=201004...
Explore this Topic
The tradition of graves facing east to west started when pagans used to bury their dead so that they faced the sun as it rises. This tradition continued and was ...
Dark spots on the skin have nothing to do with the size of the person. They could be caused by too much sun exposure. If a person has had a mole removed that can ...
We experience day and night due to the rotation of the Earth. When one half of the Earth is facing the sun it is illuminated so it experiences day the other side ...
About -  Privacy -  Careers -  Ask Blog -  Mobile -  Help -  Feedback  -  Sitemap  © 2014 Ask.com