We noticed that they were growing toward the light of the heat lamp they set below. We decided to turn the plant around and see how long it took the plant to change directions and position itself back toward the light.
Here it is before we turned it.
Right after we turned it
After about twenty-five minutes
After one hour it had completely turned back toward the lamp
Here is what we learned about why this process happens:Phototropism
The movement of plants towards light begins at germination. This is a survival mechanism called phototropism. By orienting their leaves and stems towards light plants ensure that they will receive the maximum energy possible for photosynthesis. Phototropism is a complex hormonal and chemical response to light that is still not fully understood by scientists.
Read more: Why Do Plants Bend Towards Light? | eHow.com http://www.ehow.com/about_5459208_do-plants-bend-towards-light.html#ixzz1RCjPGDnj
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