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Design and Carry out an investigation to see what effect light intensity has on how quickly water is lost from a shoot, loss of water from the upper surfaces of a plant is known as transpiration.
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Planning The investigation brief was to Design and Carry out an investigation to see what effect light intensity has on how quickly water is lost from a shoot, loss of water from the upper surfaces of a plant is known as transpiration. Hypothesis The Stomata are responsive to light, they open in light and close in darkness to allow Carbon Dioxide into the leaf for photosynthesis. As most of the water is lost via stomata transpiration rate will be increased at greater light intensity, up to a point where the stomata are fully open and transpiration is at its maximum. The water loss can be measured by enclosing the pot of the plant in a plastic bag and putting the plant on top of a top pan balance (see Fig ______), the mass will gradually fall as the water evaporates off the surface of the plant, this in not very accurate at the...
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