Light Intensity's Effect on Photosynthesis
Aim : To find out how light intensity will affect the rate of
photosynthesis in a piece of Canadian Pondweed.
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. This will happen because as
the light source is moved further away, less light rays will reach the
surface of the Pondweed, shown by this diagram;
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source
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Light rays Pondweed Light rays Light source
Pondweed
This will mean that less light (particles or waves) will go through
the clear Cuticle and upper Epidermis and reach the palisade layer.
This means that less light will reach each cell on average, and as
light is needed for photosynthesis to make the water and carbon
dioxide react together (making it a limiting factor) and so less light
means less water and carbon dioxide is reacted together in the time,
therefore there will be a decreased rate of photosynthesis, and less
oxygen produced will be produced as a by-product of the photosynthesis
reaction.
[IMAGE][IMAGE][IMAGE][IMAGE][IMAGE][IMAGE] I know that photosynthesis
will take place in the plant as there is all the factors needed for
photosynthesis available and present (water, carbon dioxide,
chlorophyll, and light) to the plant and therefore according to the
photos...
... middle of paper ...
...ble overall picture of
whether light intensity affects the rate of photosynthesis. I could
have extended the range on the distance axis so that I could find out
how this pattern evolves at the extremes of the axis and also do
sections of the range in more detail e.g. more dense results every 1mm
at the small end of the axis to see a more reliable pattern. I could
then conclude each part of the line of best fit in more detail and
explain the different stages of the experiment. I could have looked at
all the other limiting factors, maybe in the same experiment so I
could see the separate relationships and conclude which factor affects
photosynthesis more. Finally I could investigate the precise
mathematical relationship between these two factors using an equation
of the line of best fit and a Spearman's Rank calculation.
on the y. If my prediction is right I should be able to draw a
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.
This shows that there could be three variables in this experiment, carbon dioxide, water and light energy. So in our case the variable light energy (light intensity) will be used. The equation also shows that if there is more light energy then more glucose and oxygen will be produced.
Investigation Into the Colour of Light Needed to Start a Photosynthesis Reaction Diagrams [IMAGE] Method The apparatus for this experiment will be setup as shown in the diagram, for all the experiments the coloured filter will be 5cm away from the white light bulb, which is a 60watt bulb, and the beaker will be 20cm away from the edge of the coloured filter. Just before the experiment takes place we will place the pond weed (which has been in darkness for at least 24 hours to stop it any photosynthesis) into the beaker. I will then place the funnel over the pond weed and place the test-tube into the beaker (like the diagram above) I will then fill the beaker up with cold tap water till it covers the bottom of the test tube (450ml).
The Effect of Light Intensity on the Rate of Oxygen Production in a Plant While Photosynthesis is Taking Place
Speeding up the Rate of Photosynthesis. Outline: The aim of my experiment is to find a factor that will speed. up the rate of photosynthesis.
Autotrophs, can build organic compounds from simple molecules such as water and carbon dioxide and their type of feeding is called autotrophic nutrition. While they are building complex molecules, they need large amounts of energy. They are divided into two groups according to their source of energy: chemoautotrophs and photoautotrophs. Chemoautotrophs can synthesize organic compounds from CO₂ AND H₂O by using inorganic oxidation energy and they do not require sunlight. However, photoautotrophs, including green plants, produce sugar and O₂ from CO₂ and H₂O by using sunlight. The green pigment which absorbs the light is called chlorophyll and this process is called photosynthesis.
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 = =
Investigating the Link Between Wavelength of Light and Rate of Photosynthesis PROBLEM = = = = =
To make sure that my test is fair I will make sure to keep all the
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.
* Count the number of bubbles seen in 1 minute which is a way of
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.
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.
Light is a very important factor in the rate of photosynthesis, in my project I am going to test that plants do need light in order to photosynthesise. 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 .