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I plan to investigate how environmental conditions affect the transpiration of plants.
Member rating: No Rating | Words: | Submitted: Mon Jun 19 2006
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Aims I plan to investigate how environmental conditions affect the transpiration of plants. Background Information The Sun provides the energy to turn the water in the plants into a vapour causing it to evaporate into the leave's internal air spaces before diffusing out of the stomata into the air. This is known as transpiration. As the water evaporates out of the top of the plant it creates a suction on the column of water below it in the xylem. The upwards force on the column of water created by transpiration and the downwards force due to gravity created a tension in the column of water. As the upwards pull is greater than the downwards pull the column of water moves up the xylem. Cohesion tension theory tells us that it is the evaporation of water from the leaves which causes the upwards movement of water. The water molecules have a high cohesion as...
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