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Effect of different colors of light on the rate of photosynthesis.

Aim: We will be trying to see if light intensity has an effect on the rate of photosynthsis.

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Effects of different colors of light on the photosynthesis rate.

The Effects of pH Levels and Phosphorous on the Photosynthesis Process of Aquatic PlantsStudy the coniferous spruce tree (Picea glauca as the species of choice) by measuring its lateral and sub-lateral branch angles in order to see how it collects sunlight from various angles on its south-facing side.

Prediction:I predict that raising the light intensity will increase the rate of photosynthesis.

The most probable explanation for the results I gained; as mentioned
previously in my introduction, as light is one of the factors required
in order for photosynthesis to take place, as the intensity of the
light is increased, photosynthesis is able to take place at a higher

The Effect of light Intensity on Photosynthesis

Graph: Shows the effect of light intensity on the process of photosynthesis in an aquatic plant.

See diagrams c
& d below…

Diagram c Diagram d

Results obtained from experiment : "Investigating if light intensity
effects the rate of photosynthesis in an aquatic plant."

As mentioned previously, the results I have obtained from the
experiment will be of measured in 5 intervals, ranging from 0cm
-100cm, 1 repeat reading taken as well as an original reading & an
average of the 2 results calculated.

Similarly, I had no idea at what
distance the plant would cease to photosynthesise, as the lamp was the
only source of intense light available.

The effect of light intensity on the rate of photosynthesis

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

So by level of light you probably mean lightintensity which is something that can be measured.Light intensity is usually defined as theenergy hitting an area over some time period.So in the case of a plant, a higher lightintensity means more packets of light called“photons” are hitting the leaves. As you rise fromlow light intensity to higher light intensity, therate of photosynthesis will increase because thereis more light available to drive the reactions ofphotosynthesis. However, once the light intensitygets high enough, the rate won’t increase anymorebecause there will other factors that are limitingthe rate of photosynthesis. A limiting factorcould be the amount of chlorophyll molecules thatare absorbing the light. At a very high intensityof light, the rate of photosynthesis would dropquickly as the light starts to damage the plant.

In this experiment you need three experimental groups, each for every irrigation method (flood, spray or drip) and in this case you don't need a control group at all. In this experiment the irrigation method is the independent variable and the resulting growth rate of the radishes is the dependent variable. Treat each group of plants the same (light, water quantity, nutrition, cultivation, etc.) besides your independent variable - the different irrigation method.In an comparative experiment you can test, of course, the effect of a few independent variables but not in the same experimental group where also only one independent variable is allowed as in the case of a controlled experiment.

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  • What is the effect of light intensity on the rate of photosynthesis?

    Three factors can limit the speed of photosynthesis: light intensity, carbon dioxide concentration and temperature.

  • The effect of light intensity on photosynthesis on Elodea

    I am happy with the experiment as I proved that light intensity has an effect on the rate of photosynthesis.

  • The effect of light intensity on photosynthesis in Elodea

    Investigating the effect of light intensity on the rate of photosynthesis

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What effect does the intensity of light have on ..

Prediction: I predict that the oxygen bubbles will decrease when the lamp is further away from the measuring cylinder, because light intensity is a factor of photosynthesis.

The Effect of Light Intensity On Photosynthesis of Eel Grass

Effect of different colors of light on the rate of photosynthesisThe effect of different lights on plant growth: incandescent light, fluorescent light, sunlight and black light.

Light Intensity's Effect on Photosynthesis Essay


Input - Light intensityis to be varied by increasing and decreasing
the distance from the light source to the plant

Output - The rate of photosynthesisis to be measured by counting the
bubbles of oxygen produced by the plant every two minutes, and
therefore finding the rate of photosynthesis

Control - The amount of water available to the Elodea will stay the
same level in the 400 cm3 beaker.

What effect does the intensity of light have on the ..

The effects of various pH levels on the photosynthesis process of the aquatic plant elodeaThe effects of phosphorous on the photosynthesis of aquatic plantsDoes light affect stem growth?

Evaluation of the Effect of Light Intensity on the ..

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.

• What effect does the intensity of light have on ..

Without enough light, a plant cannot photosynthesise very quickly, even if there is plenty of water and carbon dioxide. Increasing the light intensity will boost the speed of photosynthesis.

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