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Free rate of photosynthesis Essays and Papers - 123HelpMe

Photosynthesis need light to work, so light therefore should speed up the rate of photosynthesis.

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Free rate of photosynthesis papers, essays, and research papers.

Hypothesis:Photosynthesis is a process by which green plants and certain other organisms use the energy of light to convert carbon dioxide and water into the simple sugar glucose....

The rate of photosynthesis was recorded at a range of light Intensities and conditions.

My graph has no anomalies, and it closely followed to what I had
predicted that the closer the distance of the light the higher the
rate of photosynthesis would be and thus produce more bubbles in the
time recorded.

photosynthesis notes - Biology Junction


Distance (cm)

Number of bubbles counted (every two minutes)























My graph shows that the closer the distances of the light source the
higher the rate of photosynthesis.

I can say that the
increase in distance thus making the light intensity stronger
increased the rate of photosynthesis and when further away made the
rate of photosynthesis almost come to its limiting factor the
straitening of the graph.

LabBench Activity Plant Pigments and Photosynthesis

Furthermore, I predict that if the light intensity increases, the rate of photosynthesis will increase at a proportional rate and more oxygen will be produced and therefore the oxygen levels will increase.

This process is also affected by the temperature surrounding the plant (the species of plant we experimented with, pond weed, photosynthesised best at around 20 degrees centigrade.) Light, temperature & CO2 are known as limiting factors, and each is as important as the next in photosynthes...

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  • Light Intensity in Plant Growth and Development

    The test will be to find out the relationship between light intensity (voltage) and the rate of photosynthesis.

  • #41 Effect of Light intensity on the rate of Photosynthesis

    The lower the light intensity the slower the rate of photosynthesis and eventually it will decrease in l level.

  • (the only light source) at distance ..

    The more light there is the more energy the reaction gets and this speed's up the whole process of photosynthesis.

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How light intensity effects the rate of ..

It will be very interesting to see how light will influence the rate of photosynthesis in plants and what will happen if they do not get the required light in order to produce starch .

How light intensity effects the rate of photosynthesis ..

I think this because the plant may use up all of the carbon dioxide (Sodium hydro carbonate) and the plant can have as much light as it needs but if it does not have any carbon dioxide it will not be able to photosynthesise....

Light Intensity and Photosynthesis

During the process of photosynthesis, carbon dioxide plus water in the presence of sunlight, enzymes and chlorophyll produce glucose and oxygen as waste product.

Effect of Light on Photosynthesis by Fourier Education - issuu

This is an interesting project. You have identified 2 critical variables in photosynthetic rate. Two others would be CO2 availability and plant species. This second variable is what complicates your question. Some plants can use a whole lot of light effectively. Other plants have evolved in shady conditions and can use only a relatively small amount of light before photosynthetic rate levels off.

I suggest that you measure this yourself. Try using an aquatic plant like elodea (any aquarium store will have it). Expose it to various amounts of light. You can measure it with a light meter or just use distance from the light source as your variable. You can measure photosynthetic rate by counting oxygen bubbles because the bubbles will all be about the same size, or you can capture the oxygen and measure the volume.

Adding different amounts of bicarbonate (baking soda) will allow you to see how adding CO2 will influence rate of photosynthesis. First boil and cool distilled water to drive off dissolved CO2 so that you can control this.

Obviously, I have not answered your question for dealing with the amount of water. This actually is a more difficult thing to test because measuring the oxygen produced is harder when you are not using an aquatic plant.

If you just want numbers to plug into your model, take a look at this scientific paper:

Look at figure 1 on page 3.
The water content is on the X (bottom) axis, while the Y (up-and-down) axis shows the rate of photosynthesis (measured by how much CO2 the plant took up). Note that the 2 different species responded differently. You can also see that there is a lot of variation, but you can use the average photosynthetic rate for each water level. The scientists also looked at the effect of CO2 and temperature. Temperature would depend on light intensity, so you could use that in your model.

Title: Effect of Light on Photosynthesis ..

Prediction : I predict that as I increase the distance between the light source and the Canadian Pondweed (reducing the light intensity), the volume of oxygen produced within the time limit (the measure of the rate of photosynthesis) will decrease.

Light Intensity and Distance From the Source - Uzinggo

6CO + 6H O ® C H O + 12O (in the presence of light energy and chlorophyll) Aim- The aim of the experiment is to determine what effect light intensity has upon the rate of photosynthesis of Canadian Pondweed (Elodea)....

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