Like all living organism on Earth, plants must harvest energy to survive. Plants do this by converting solar energy and storing it in the chemical bonds of ATP and carbohydrates, a process called photosynthesis (Knox et al., 2005). However, this report is only concerned with photosynthetic pigments and what wavelength of light they absorb, rather than the process of photosynthesis itself.…
Chlorophylls A (P680 and P700): reflects green light, and absorbs red and blue light to being the process of photosynthesis…
5. How do you expect the intensity of light to affect the color of the…
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.…
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?…
light source for this variable was the closest to the plant out of all the trials, which means that the…
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.…
4) We selected to test the effect of different concentrations of bicarbonate (baking soda) in the leaf disk solutions.…
Hypothesis: Red color will have the most impact on the plant growth, meanwhile; black will have the least impact on the plant growth…
The research being conducted in this practical aims to look at the differing wavelengths of visible light, and which range produces the most photosynthetic activity in green land plants. Since these plants absorb red and blue lights the most readily, and chlorophyll a absorbs blue light the most out of any other wavelength, it is hypothesised that in this practical the most activity will be seen under the blue light (Hoober 1984).…
light all the time and the last need to have no expose to light. Chart what…
In this lab, four different types of leaves were tested to see the rate at which each leaf photosynthesized. This lab demonstrates how plants store light, capture light, and use light as energy for reproduction and growth, by photosynthesis. The control in this experiment was spinach, which was tested before any of the other plants were. The other plants that were tested were English Ivy, C4 Plant, and a multicolored plant. Each type of leaf was tested in a sodium bicarbonate solution and a solution of distilled water. It will be shown in the discussion whether the hypothesis made was correct or incorrect. It will be shown in the discussion what could have occurred during the experiment that could have affected the results.…
The rate of oxygen production was measured by the amount of dicks that stated to float at a certain time. After the disks have all floated to the top, the rate of carbon dioxide loss could be measured by how long it takes for the leaf disks to float back down to the bottom.…
Introduction/Background: Plants use light to turn carbon dioxide into sugars necessary for growth, a process called photosynthesis. Sunlight is a full spectrum of different wave lengths of light. Seen through a prism, this spectrum turns into bands of color: red, orange, yellow, green, blue, indigo and violet.1 However, changing the wavelength of light may shorten this process even more.2 Many of the results from other experiments have shown that this differs from plant to plant.3 In a previous experiment, done by Hamaker K., results have shown that vines under green light have shown more growth than vines under “white light”.4 However, an experiment done by Morton J. L., lima beans actually grow the best in “white light” and the poorest in green light.5 The conclusion is that different wavelengths of light in the visible spectrum have varying effects on the growth of photosynthetic plants.6 The purpose of this experiment is to see if different wavelengths of light affect the growth of raphanus sativus.…
8. Energy is needed to add a third phosphate group to ADP to make ATP. What is a cell’s source of this energy?…