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Topic: Transpiration


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  Encyclopedia :: encyclopedia : Transpiration   (Site not responding. Last check: 2007-10-22)
Transpiration is a continuous process caused by the evaporation of water from leaves of plants and its corresponding uptake from roots in the soil.
Transpiration cools plants down and enables mass flow of minerals to where it is needed in the plant.
Mass flow is caused by the decrease in hydrostatic (water) pressure in the upper parts of the plants due to the diffusion of water out of stomata into the atmosphere.
www.hallencyclopedia.com /Transpiration   (228 words)

  
 transpiration - HighBeam Encyclopedia
Transpiration functions to effect the ascent of sap from the roots to the leaves (thus supplying the food-manufacturing cells with water needed for photosynthesis) and to provide the moisture necessary for the diffusion of carbon dioxide into and oxygen out of these cells.
Transpiration efficiency, specific leaf weight, and mineral concentration in peanut and pearl millet.
Transpiration in upper Amazonia floodplain and upland forests in response to drought-breaking rains.
www.encyclopedia.com /html/t/transpir.asp   (469 words)

  
 Ecological Engineering Group
The objective is to drain pretreated wastewater into an appropriately engineered gardens or forests of phreatophytes: plants known for fast growth and high water usage rates.
Phytoremediation takes advantage of plants' nutrient utilization processes to take in water and nutrients through roots, transpire water through leaves, and act as a transformation system to metabolize organic compounds, such as oil and pesticides.
When large plants such as willows, poplars and bamboo are used, the idea is to move as much water through them as possible so that they take up as much of the contaminants as possible.
www.ecological-engineering.com /defs.html   (5940 words)

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