Photosynthesis Coursework

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Photosynthesis Coursework

Introduction

Background Information

Glucose can be converted to sucrose and carried to other parts of the plant in phloem vessels. Glucose can also be converted into starch and stored

Light

Sometimes light is a limiting factor. A plant may have lots of water and carbon dioxide, but it will not photosynthesize very fast if there is not enough light; increasing the light intensity will make photosynthesis faster.

Carbon dioxide

Sometimes the level of carbon dioxide is limiting. There may be plenty of light but the plant cannot photosynthesize because it has run out of carbon dioxide.

Temperature

Temperature can be a limiting factor too. The rate of photosynthesis will be limited if it is too cold for the enzymes to work properly.

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Aim

Investigate if light intensity affects the rate of oxygen production by photosynthesis in pond week. I have chosen to study light intensity because in a classroom it would be hard to monitor the other limiting factors, carbon dioxide levels and temperature. Also I don’t have facilities to carry out the other experiments.

Prediction

I predict that as the light intensity increases (the lamp is closer) more oxygen will be produced due to photosynthesis. Carbon dioxide levels will be kept high by using 5% sodium hydrogen carbonate solution. This will give the plant ...

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