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Factors affecting the rate of transpiration

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Introduction

Factors affecting the rate of transpiration Results Conclusion Looking at the graph, we can recognize that as the distance between the lamp and the plant increases, the distance moved by the bubble decreases, making them inversely proportional; meaning that a decrease in light intensity reduces the rate of transpiration. This is in support of my earlier prediction that stated "...as I increase the light intensity on the plant, the faster it will transpire and take up water to replace the water lost". ...read more.

Middle

But my evidence also proves that the intensity of the light on the leaves, (and subsequently on the stomata) speeds up transpiration. This would be because the less concentrated the light is on the plant, the less stomata are stimulated to open and therefore the lesser surface area for the water to diffuse out of. Evaluation The results were all accurate and sufficient for arriving at my conclusion. ...read more.

Conclusion

If I had more time, I would investigate the distance traveled by the bubble over a longer period of time; or perhaps the time taken for the bubble to move a set distance. This is likely to improve the reliability of my evidence and the accuracy of conclusions drawn. To further develop my study of the factors affecting transpiration, I would have liked to investigate another of the various factors outlined in my plan. I would also be interested in investigating the specific effects that using the screen had, on the distance moved by the bubble in 1min. ...read more.

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