I predict that the stomatal density on high leafs is higher than on low leafs. During photosynthesis the chloroplasts in the leaf cells synthesize ATP from ADP as a result of exposure to light, while oxygen is produced as a by-product of the photosynthetic reaction. Carbon dioxide, which enters the plant through diffusion via the stomata, is needed for this process (photosynthesis) to occur. When the chloroplasts in the leafs cell is exposed to higher light intensities, more ATP is synthesized from ADP, while production of the by-product oxygen also increases. This increase in the rate of photosynthesis calls for more “fuel”, i.e. Carbon dioxide. So for a higher concentration of carbon dioxide to diffuse into the plant, the plant must grow a greater stomatal density (higher number of stomata). This will create a larger surface area for carbon dioxide diffusion, the excretion of water vapor (transpiration) and the large amounts of oxygen being produced.…
In this study, we are interested in examining the effects of photosynthesis in spinach leaves in the presence of different light conditions. The light conditions that will be tested are no light, white light and green light. Therefore, we hypothesized that the O2 rate of consumption would occur more in the green light condition and CO2 rate of consumption would occur more in the no light condition.…
Step 4: With the plastic syringe draw out the gases of the spongy mesophyll tissue and infiltrate the leaves with sodium bicarbonate solution and then pour the solution into the appropriate cup. By doing this it will cause the leaves to sink.…
2. Chlorophyll a absorbs mainly blue violet and red light. It participates directly in the light reactions.…
Based on the results from your lab, how might your results differ if you direct the air flow onto the upper surface of the leaf versus the lower surface? Why?…
Chlorophylls A (P680 and P700): reflects green light, and absorbs red and blue light to being the process of photosynthesis…
The purpose of this lab is to observe how influential light is to the construction and/or use of CO2 and O2 amongst plants. This can be examined by experimenting the effects of plants under both light and no light.…
The objective of this study was to figure out how different light colors affected the rate of photosynthesis in spinach leaves. This was done by taking leaf disks, removing the CO2 and sinking them in beakers. One beaker filled with regular water, the other filled with a mixture of water and sodium bicarbonate. The beakers were then placed in front of the light sources and the amount of disks floating was recorded every minute. In our study the disks exposed to the red light started to float sooner than the…
as an indirect measure of photosynthetic activity.The lab allows the examination of the effects of…
plant is receiving the most light in order to perform photosynthesis at a more optimal rate.…
5. How do you expect the intensity of light to affect the color of the…
The data collected throughout this experiment showed that the spinach, DPIP, phosphate solution under the opaque cup had the lowest percent orange light transmittance and therefore the lowest rate of photosynthesis and the t-Tests supported this. The data collected also showed that the solution under the green filter had the second lowest rate of photosynthesis and the solution under the blue filter had the third lowest rate of photosynthesis. This data supports my hypothesis.…
Although affordable, incandescent lights provide little of the blue-spectrum light essential to plant growth. They are less efficient than other artificial lights as they produce less illumination while utilizing more energy. To draw the most benefit from an incandescent light, you would have to place it close to your plants, and because incandescent lights produce more heat than other types of bulbs, this would likely result in burning your plants. Incandescent bulbs also have very short lives.…
Photosynthesis does not occur without light and the humidity prevents water from diffusing out the leaf.…
I predict that the plant under blue and purple light will have a higher photosynthetic rate because according to the colour spectrum, they are of shorter wavelength thus they have a higher energy. The red light and green light will have lower…