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The effect of light intensity on the rate of photosynthesis in plants
The importance of light to photosynthesis
The importance of light to photosynthesis
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An Investigation into the Effect of Light Intensity on the Rate of Photosynthesis on a Piece of Elodea
Plan:
Method:
1) First I will put some water into a boiling tube and add 5 spatulas
of Sodium Hydrogen Carbonate. I will add 5 spatulas of Sodium Hydrogen
Carbonate as it reacts with water and forms carbon dioxide; also I
have so much so that I have carbon dioxide in excess.
2) Then I will cut off 5cm of elodea and place it into the boiling
tube.
3) Thirdly I will place the boiling tube in a test tube holder 5cm in
front of the light source.
4) Then I will count the number of oxygen bubbles that rise to the top
in 5 minutes.
5) I will repeat the experiment 2 more times, so I have a total of
three results to work out my average as well as that it makes it a
fair test
6) Also I will move the boiling tube 5cm away from the light source a
total of 4 times.
Equipment:
Sodium Hydrogen Carbonate
Spatula
Boiling Tube
Test Tube Rack
Lamp
Water
Scissors
Ruler
Elodea
Stopwatch
Diagram:
Prediction:
I predict that as the distance from the light increases the average
number of bubbles produced in 5 minutes will decrease. I think this
because light plays a very important part in photosynthesis.
Light
Chlorophyll
[IMAGE]Carbon Dioxide + Water Glucose + Oxygen
As can be seen by the above equation light is the main source of
energy for photosynthesis. The energy it gained from the sun. The
chemical chlorophyll, which is present in the chloroplasts of the
mesophyll cells, absorbs the light and converts it into chemical
energy which can be used for photosynthesis. Light affects the rate of
photosynthesis depending on its intensity; the more light there is the
higher the rate. However it can get to a point where even though the
5. A second test tube was then filled with water and placed in a test
put in the pot. If the person knew if changing the volume of a substance will not change the boiling point, but only alter how much time it takes for the substance to reach the temperature. Then the person would know that it would be better to not put too much water in the pot, because it would take longer for the water to boil.
Step4-Pour the paraflint into the small cooking pot,put it on the burner and turn on the flame(low heat).
Investigating the Effect of Light Intensity on Photosynthesis in a Pondweed Aim: To investigate how the rate of photosynthesis changes at different light intensities, with a pondweed. 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 plant may stop photosynthesising when the pondweed is at the furthest distance from the lamp (8cm). Without light, the plant will stop the photosynthesising process, because, light is a limited factor. However once a particular light intensity is reached the rate of photosynthesis stays constant, even if the light intensity is the greatest.
8. Repeat from step 4 twice more so you end up with three results for
As the light is increased so would the rate of photosynthesis. Apparatus: boiling tube, 250ml beaker, bench lamp, ruler, sodium
Experiment #1: The purpose of this experiment is to investigate the effects of baking soda and light intensity on the rate of photosynthesis of green spinach leave through the observation of floating disk.
The Effect of Light Intensity on the Rate of Oxygen Production in a Plant While Photosynthesis is Taking Place
An Analysis and Evaluation of Data from Photosynthesis Experiments Graph analysis This is my analysis for the investigation in to the affect of light intensity on the rate of photosynthesis to the Canadian pondweed, elodea. In the results the pattern is that when the light intensity is higher the readings are generally higher. On the graph the less the light intensity the lower the gradient of the curve. the equation for the photosynthesis process is; CO2 + 2H2O + Light Energy = =
Variables --------- During the experiments, the water will be heated using different spirit burners containing different alcohols. I will be able to change different parts of the experiment. These are the. Volume of water heated:
The Effect of Light Intensity on Photosynthesis Of Elodea Canadensis Introduction I wanted to find out how much the light intensity affected the Photosynthesis in Elodea Camadensa. I decided to do this by measuring the amount of oxygen created during photosynthesis. Photosynthesis is the procedure all plants go through to make food. This process uses Carbon dioxide, water and light energy. It produces Oxygen and Glucose.
After the water, has been boiling for 10 minutes, and the temperature inside the test tube has been stable for 5 minutes, record the temperature and remove the thermometer.
4. Put each group of potato discs in one of the 6 test tubes and watch
2. In the large beaker, put water and boil it completely. After that, remove the beaker from heat. 3. Sample tubes (A-D) should be labeled and capped tightly.
An Experiment to Investigate the Effect of Light Intensity on the Rate of Photosynthesis. Introduction Photosynthetics take place in the chloroplasts of green plant cells. It can produce simple sugars using carbon dioxide and water causing the release of sugar and oxygen. The chemical equation of photosynthesis is: [ IMAGE ] 6CO 2 + 6H20 C 6 H12 O 6 + 6O2 It has been proven many times that plants need light to be able to photosynthesize, so you can say that without light the plant would neither photosynthesize nor survive.