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.…
Given that we are testing the amount of CO2 and O2 produced by spinach leaves depending on the amount of light causes opposite results. If the chamber were placed under a turned on bulb, there would be a…
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 5: Place the cups under the lamp and record the number of leaves that have floated to the top of the cup each minute. Continue to do this until all the leaves have floated to the top or until there is no activity in the cups anymore. By doing this it will be possible to find the…
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?…
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.…
as an indirect measure of photosynthetic activity.The lab allows the examination of the effects of…
Chlorophylls A (P680 and P700): reflects green light, and absorbs red and blue light to being the process of photosynthesis…
Plant leaves are known to have a spongy mesophyll layer which usually contains CO2 and O2 gases within it, due to this leaves and leaf disks usually float in water. If leaves are placed in an alternate source of carbon dioxide in the form of bicarbonate ions, then photosynthesis can occur. When photosynthesis occurs, oxygen will accumulate in the air space of the mesophyll, causing the sunken leaf to become buoyant again. Cellular respiration occurs at the same time as photosynthesis in plant these, countering the processes and affecting the accumulation of oxygen in the air spaces. Therefore the buoyancy of leaf disks is an indirect measurement of the net rate of photosynthesis.…
plant pigment that absorbs red and blue light, which ultimately appears green to the human eye…
5. How do you expect the intensity of light to affect the color of the…
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.…
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…
Photosynthesis does not occur without light and the humidity prevents water from diffusing out the leaf.…