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Effect of Light Intensity on Photosynthesis Julie Ann E.

Deep red light is the most efficient in terms of simple photosynthesis, but not to the huge extent usually claimed, and plants grown only in red light get leggy and overly lush.

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


I predict that by varying the light intensity the pond weed is
provided with, that as the light intensity becomes lower, so will the
outcome I will be measuring (the rate of oxygen bubbles given off by
the plant will decrease), and vice versa.

rate of photosynthesis: light intensity, light in general.

Aim: To see if raising the light intensity increases the rate of photosynthesis.

My reasons for believing my results are reliable & accurate are
firstly, they agree with the theory behind the rate of photosynthesis
when light intensity is increased, secondly the result which I gained
compared accurately to my prediction, which was well thought out
before it was made, and finally the results I gained for my final
experiment differed so much to the results of my preliminary procedure
which was very inaccurate.

At a point (which was not
displayed on my graph, so logically this point is higher than the
highest light intensity I provided the pond weed with) the rate of
photosynthesis will stay steady , it will increase no further (see
diagram e).

Effects of Light Intensity on Photosynthesis ..

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

In this experiment the light intensity was no further effect on the rate of photosynthesis.
The Effect of Light Intensity on of photosynthesis, increased light intensity the results of the experiment: !

the goal is to find out what effect light intensity In order to test the effects of light intensity in terms.// Provide alternate content for browsers that do not support scripting // or for those that have scripting disabled.

Graph: Shows the effect of light intensity on the process of photosynthesis in an aquatic plant.
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Effect of Light on Photosynthesis by Fourier Education - issuu

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.

Effect of Light on 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.

Effect of Light on the Photosynthesis Rate ..

My reason for believing this
is that as mentioned previously, light is one of the limiting factors
required for photosynthesis, and by lowering the amount of light
available to the plant, I will be decreasing the rate at which the
process of photosynthesis takes place in the plant.

effect of light intensity on photosynthesis experiment

You should see an upward curve/line present, if you are recording
light intensity on your graph, the reciprocal of the distance, other
wise stated as 1


This is perhaps the best choice of graph to construct, as it clearly
presents the idea that as the light intensity increases, so does the
rate at which oxygen is given off by the aquatic plant.

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

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.

of light (photosynthesis) have on the rate of ..

From my ascending graph , I can see clearly that as the light
intensity the pond weed is provided with is increased, the rate at
which oxygen bubbles are given off by the plant increases also.

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