I am not sure what you mean by "level" of light, but I will answer your question in to ways - in terms of the intensity of light and wavelength of light. It is arguably the most important biochemical pathway, since nearly all life depends on it.
If the light intensity is increased, the rate of photosynthesisincreases. It is a complex process occurring in higher plants, phytoplankton, algae, as well as bacteria such as cyanobacteria. Using a spectrophotometer, the amount of DCPIP present was able to be determined and tests using variable intensities of light were performed on spinach chloroplast cells.
The wavelength most effective in conducting photosynthesis is nm. At 37 mm away from the light, the absorbance decreased at 0. So water is an important limit on a plant.
Plants need red light, and lots of it. To see the slightest flicker of green light the color to which our eyes are most sensitivethe minimum number of photons is six. This tube was used as a blank for the spectrophotometer which was set to nm.
It seems though, if working with LEDs, that nm are more mass produced cheaper. I hope that you continue to investigate this as the story gets more interesting and exciting the deeper you go.
They were than placed With too little light, photosynthesis cannot occur either and the plant suffers without the production of sugars. I have been able to grow basil using blue LED lighting on a 20 hour cycle. More light is actually a problem if water is scarce, because even more water will evaporate from the plant.
When we think of photosynthesis as a process, we can see that there are at least three things that can limit the process: More light can mean more photosynthesis. Actually, most places on Earth have the same amount of carbon dioxide in the atmosphere, but a plant can only get it by opening holes in its leaves.
Their absorbances were again recorded and this was repeated until the control tube came to a constant reading while tube 3 gradually went down. Seems to be the most efficient wavelength of red light, for photosynthesis, is between nm and nm, and not higher.
Tubes 4 through 6 were also filled with 0. Light intensity is usually defined as the energy hitting an area over some time period. A green light was used in order to see.
Would you like to make it the primary and merge this question into it? So you can just use those instead, or couple them with far red light infrarednm, to stimulate PFR, germination. If you increase the light intensity the rate increases but if you decrease the light intensity the rate decreases.
So,the photoelectric current depends upon the intensity of the incident radiations. As the distance from the light increased, the absorbance readings on the spectrophotometer went down at a faster rate. In rain forests, where there is plenty of water, trees grow very tall to reach as much light as they can.
Why is the green light least effective during photosynthesis? When this occurs, leaves can experience sunburn damage. For this experiment, DCPIP was added to cuvettes with spinach chloroplasts, which were exposed to an incandescent light at different distances for different intervals of time.
The light in photosynthesis really gets the process going. If there is enough water, carbon dioxide, and the temperature is right, light becomes the factor which will affect photosynthesis.
If you look at a spectrum from nmnm. Click Here to return to the search form. In photosynthesis, the energy from the sun is used to turn carbon dioxide CO2 and water into sugar. Inside of the cell consists of chlorophyll and stroma. There are many complicating interactions between plants and light.
Immediately after being filled with the DCPIP and agitated, the tubes were both placed in the spectrophotometer and their absorbances were recorded. Light, Carbon dioxide and water. Photosynthesis is light dependent. Oxygen is a waste product.Effect of Light Intensity on the Rate of Photosynthesis - Download as Word Doc .doc /.docx), PDF File .pdf), Text File .txt) or read online.5/5(1).
As you rise from low light intensity to higher light intensity, the rate of photosynthesis will increase because there is more light available to drive the reactions of photosynthesis.and the temperature is right, light becomes the factor which will affect photosynthesis.
Most of the time, when the intensity of light is high, you will. For example, the amount of light will affect the rate of photosynthesis. If there is no light, there will be no photosynthesis. As light intensity increases, the rate of photosynthesis will increase as long as other factors are in adequate supply.
As the rate increases, eventually another factor will come. The Effect Light Intensity Has on the Photosynthesis of Spinach Chloroplasts. Graphs show that the higher the intensity, the higher rate of photosynthesis.
The intensity in this experiment was increased by moving the tube closer to the light. Lastly, the reason a green light was used in order to see was because chlorophyll absorbs all.
This is the rate of photosynthesis at that particular light intensity. The gas should be checked to prove that it is indeed oxygen - relights a glowing splint. Repeat at different light intensities by moving the lamp to different distances.
During the photosynthesis, the light intensity will increase when the rate of photosynthesis increase.(Pang ) In my result, the distances from light intensity are increased when the rate of photosynthesis decreases, which mean when the light intensity decrease, the rate of photosynthesis also decreases.Download