Internal Investigation: Exploration Juan Garcia 11/17/15 Period 2 Problem/Question What is the effect of varying pH solutions on the rate of photosynthesis on the Indian Lotus (Nelumbo nucifera) via The Floating Leaf Disc Assay? Background The Indian Lotus is an aquatic plant that is quite popular among cultures as being sacred. It is often used to portray beauty as it grows from the mud unstained and pure. It is also used today in many Asian foods. As such the growth of the Indian Lotus is one that is very important to many cultures and societies. Knowledge of the optimum pH in which the Indian Lotus grows can be significant due to how the pH of the environment the Indian Lotus grows in can vary based upon pollution and other factors. Therefore in the event of high pollution, or any situation that changes the pH of the environment botanists may be able to predict or decipher the effect of that change on the growth of the plants in the area, specifically the Indian Lotus. The experiment can also conclude the extent that pH affects Indian Lotus growth. It may conclude that varying pH has a slight effect on Indian Lotus growth or even the ability to stop it from undergoing photosynthesis completely and kill the organism. The experiment is important in general to find how pH can affect Indian Lotus growth which can in turn affect other aspects such as the diet of locals or lead to even a decrease in Indian Lotus which is culturally significant to cultures and religions.
Have you ever really wondered how different variables can affect how plants go through photosynthesis? Well, in this experiment, the purpose was to see how various environmental conditions can affect the overall photosynthetic capacity of a specific plant. The factors, light, darkness, cold, and heat were applied to see how the different components would affect the photosynthesis on spinach plants. Each group was given a different factor to test. Out group was given the light factor. The hypothesis for this experiment is that when adding light as a factor, the light will affect the overall plant photosynthesis.
These not only affect the plant in their specific ways, they also have different effects when they are present in certain ratios with the other chemicals. Plant hormones maintain a delicate balance, and this experiment serves to observe that balance (Campbell and Reese, 2008).
Purpose/Hypothesis: The purpose of this experiment is to use both cabbage juice and pH paper to determine the pH of household items. This way, we can tell which products are basic and which one are acidic. If we use cabbage juice as an universal pH indicator by comparing it to pH paper then pH determined by the cabbage juice will be unstable because by using cabbage juice, it can be different depending on how diluted it is.
The purpose of this lab is to observe the effect of white, green, and dark light on a photosynthetic plant using a volumeter and followed by the calculation of the net oxygen production using different wavelengths color of white and green light, and also the calculation of oxygen consumption under a dark environment, and finally the calculation of the gross oxygen production.
Abstract: Photosynthesis, the conversion of inorganic carbon into organic glucose molecules using light energy, is one of the most biologically important processes on Earth. It is imperative to study how the rapidly increasing carbon dioxide concentrations in the atmosphere since the Industrial Revolution may affect photosynthesis of photoautotrophs. In this experiment, a look is taken at the question: does inorganic carbon availability affect photosynthetic activity. This experiment uses bicarbonate as the inorganic carbon source, and analyzes how varying concentrations of bicarbonate may affect the photosynthetic activity of the South American aquatic plant Egeria densa (also known as Elodea densa) by measuring its O2 production in distilled water and 0.1%, 0.4%, 0.6%, 0.8%, and 1.0% sodium bicarbonate solutions. T-tests between the control (distilled water) and each bicarbonate treatment are conducted using the online program GraphPad. All tests results in a p-value greater than 0.05 and a calculated t-value greater than the critical t-value, thus rejecting the null hypothesis, indicating that inorganic
The purpose of this experiment was to investigate the effects of light intensity on the rate of photosynthesis in a Moneywort plant. By observing the plant in distilled water mixed with sodium bicarbonate, different light bulbs were targeted onto the plant. The measurement of the amount of bubbles present on the plant during the trial of the experiment enabled us to identify the comparisons between the activity of the light and the process of photosynthesis.
-Measuring the pH of a solution (such as in the lab we had) could also help determine the rate of photosynthesis. You would need a much more specific pH meter, but generally, if pH goes down, the level of CO2 is higher, meaning more cellular respiration. Higher pH means there’s less CO2, so more photosynthesis.
The use of too much fertilizers, and in particular, of fertilizers with high concentrations of nitrogen, has been linked to reduced biodiversity (Xiankai et al. 2010). It becomes necessary to consider the detrimental effects of high concentrations of fertilizer in the reduced spaces. Fertilizers are salts, and therefore high concentrations of fertilizers can deplete the plant from water.
Soil, which is the layer of earth on the top where plants and vegetation grow, contains a pH balance, everything does. The pH, acidity, or alkalinity balance of each type of soil that is being observed can affect the plants, because it determines how many nutrients are being deposited to them. It
Photosynthesis is a vital process that requires to utilize energy for plants. This experiment was done to evaluate the effects of carbon availability on photosynthetic activity. The aquatic plant Elodea densa was placed into sodium bicarbonate solutions of five concentrations ranging from 0.1% to 1.0%, in five independent trials (excluding the negative control treatment of water). The temperature and light intensity was constant. The results indicated a directly proportional relationship between the availability of carbon dioxide and the rate of photosynthesis of Elodea Densa, as photosynthesis continued to increase with increasing amounts of bicarbonate. The most O2 amount of oxygen produced was with the 0.7% NaHCO3 concentration and least with the control of water. The null hypothesis that stated carbon concentration does not affect rate of photosynthesis of the aquatic plant was rejected. The predicted hypothesis that an increase in bicarbonate concentrations results in an increase in the photosynthetic rate was accepted. In conclusion, there is a significant increase in photosynthetic activity as the concentration of NaHCO3 increases.
After extensive research, I believe that the more acidic the soil is, the slower it will be for the Fast Plants to grow. The soil’s pH is a crucial part in growing a healthy plant because “all plants require different levels for proper growth” (Lovejoy). The independent variable in this experiment is the Acidic buffer solutions; which consist of pH 2, 4, 6, and 7. According to Chemguide.co.uk, “An acidic buffer solution is simply one which has a pH less than 7.” It is very important that we as students understand the effects acidity has on plant growth. Studying the growth of the Wisconsin Fast Plant helps students have a firm understanding of this topic which in turn can help clean and prevent pollution throughout our country, making it a better and safer world for the
The intention of this experiment is to determine the effects of pH on the rate of photosynthesis in living leaves. Photosynthesis is a process by which plants convert light energy captured from the sun into chemical energy which they use to perform various plant functions. During the photosynthesis process, light, carbon dioxide, and water react to produce products: sugar and oxygen. The equation for photosynthesis is:
During respiration, organisms give release CO2, which combines with the water to form carbonic acid. The Carbonic acid solution remains colorless after the addition of the phenolphthalein, a pH indicator. Given they both exist in water-based environments, their effects on water was evident of the plant cells since they require taking sugar and breaking it down, breaking those sugars down will produce carbon dioxide and this will affect the amount of NaOH needed to make the water turn pink. Organisms Volume Amount of NaOH to Reach End Point Fish 2.7 mL 28.6
To study the effects of hypotonic, hypertonic and isotonic solutions on plant and animal cells.
The plants that grow in saline soils have diverse ionic compositions and a range in concentrations of dissolved salts (Volkmar et al., 1998). These concentrations fluctuate because of changes in water source, drainage, evapo-transpiration, and solute availability (Volkmar et al., 1998). Due to these varying conditions, plant growth depends on a supply of inorganic nutrients, and this level of nutrients varies in time and space (Maathius and Amtmann, 1999). Either extreme condition concerning nutrients results in deficiency or toxicity in plants, and this is demonstrated by salt tolerance (Maathius and Amtmann, 1999). These conditions vary according to the plant species and growth conditions. Little is known about the genetic basis for diversity of salt tolerance in plants, and this could be partly explained through the definitions given for salinity.