21 February 2012

Desert molly (or how to survive to light and heat in the desert)

While browsing on asknature, I came across this nice desert plant.
It needs light to live, but too much light can burn it and that is not a secondary issue when speaking about desert.
Consequently, this plant has made up a way to protect itself from heat.
1. At noon, under the hottest sun, its leaves crumble up, reducing the surface exposed to the sun.
2. Then, it excretes salt from leaves and the surface of leaves is completely covered. Salt reflects sun light and decreases the quantity of heat the plant will get.

// Sara

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