Inhibition Of Direct Light Affects Elodea 's Co2 Production During Photosynthesis

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.

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

According to my hypothesis, the CO2 was absorb because the elodea performed photosynthesis. My hypothesis stated that “After keeping the test tubes in a light environment for 30 mins or more, the production of CO2 would decrease because more light means more photosynthesis and more oxygen.” From my experiment, the color of the carbonated water with elodea in it changed from yellow to little yellow. When the color change from yellow, it means that CO2 were absorbed and oxygen were produced as the product. This data supported my hypothesis because after 30 of light shining to the test tubes, the test tube with plant and carbonated water produce oxygen and the CO2 were absorbed.

These carbon dioxide molecules are crucial because they provide the carbon molecules needed to create glucose. Most plants obtain carbon dioxide from the atmosphere, but aquatic plants obtain CO2 from the dissolved carbon dioxide in water. In this experiment, when sodium bicarbonate (NaHCO3) was added to water, it easily dissolved into the water. Sodium bicarbonate provides the carbon dioxide needed for the plant to produce glucose in the light-independent reactions. The role of sodium bicarbonate in this experiment was to provide the elodea with CO2 so that the plant could undergo

“Photosynthesis is a biochemical process for building carbohydrates using energy from sunlight and carbon dioxide taken from the air”, (Morris, J. (2016) Biology How Life Works. New York, NY.). It is a system that uses plants and specific algae to synthesize molecules from both water and carbon dioxide. The oxygen we breathe and the food we eat is fueled by photosynthesis because it is an energy source. Photosynthesis occurs in eukaryotic and prokaryotic organisms and some examples are humans, trees, and plants. Biological systems use photosynthesis as an energy source. Where there is a source of sunlight, there is a chance

Some evidence that cellular respiration occurred in the Elodea plant happened are the O2 absorption rates. During cellular respiration oxygen is one of the products of the Elodea plant making sugars, thus if there is an increase of oxygen then the Elodea was doing cellular respiration. This is also the same for photosynthesis light energy was taken along with CO2 and H2O to create sugar and oxygen, which could be measured by the O2 gas sensor.

Because chlorophyll-a takes in violet-blue, and orange-red lights to use in photosynthesis, it reflects green, and that is the color we see. This study investigates the relationship between the wavelength of light and the total respiration of the plant Elodea. The purpose is to see the effect of the presence or absence of certain wavelengths can have on the process of photosynthesis. Because Elodea is a plant that reflects green light, it can be assumed that red lights, the complimentary color to green will be absorbed the most contributing to the process of photosynthesis and respiration making the most oxygen.

Duckweed is a small aquatic plant that is able to grow rapidly, making it the ideal specimen for our experiment. It is hypothesized that altering the amount of light received by duckweed will alter its photosynthetic rate. It is predicted that a lower light intensity will lower the rate of growth in duckweed.

The Effect of Light Intensity and Temperature on the Rate of Photosynthesis Aim The aim of my experiment is to determine whether intensity of light and temperature would affect the rate of photosynthesis in a plant. To do this, I will place a piece of pondweed in varying light intensities and temperatures, and observe the amount of oxygen being given off. I am using pondweed because of its unusual quality of giving off bubbles of gas from a cut end, when placed in water. Introduction Photosynthesis occurs only in the presence of light, and takes place in the chloroplasts of green plant cells.

This lab was conducted to discover which level of light (measured in lux) would make Spinacia oleracea leaf disks float the fastest. Lux (lx) is latin for light, and is the unit of measurement for light in the International System of Units (Rouse 2011). Light plays a key role in the process of photosynthesis and in this we are essentially measuring the rate at which Spinacia oleracea leaf disks convert a bicarbonate solution into oxygen. The oxygen then would bubble up, allowing

In Encyclopedia Britannica, the Elodea plant viewed as a waterweed. An intrusive water plant starting from the North American mainland. There utilized as a part of analyses and in aquariums in view of a lot of oxygen that the plants produce. As indicated by the Colorado Master Gardening system's cultivating takes note of, the blend of daylight, carbon dioxide from the air, and water from the dirt respond with each other to deliver oxygen. The paper likewise expresses that the measure of oxygen delivered is reliant on the measure of light and water accessible. Elodea, being a water plant, the measure of the oxygen is fundamental to people for the utilization of submerged investigations and circumstances in which a man may require the oxygen

Hypothesis: The rate of photosynthesis in the water plant hydrilla will change as the rate of carbon dioxide changes.

However, the photosynthetic process can be affected by different environmental factors. In the following experiment, we tested the effects that the light intensity, light wavelength and pigment had on photosynthesis. The action spectrum of photosynthesis shows which wavelength of light is the most effective using only one line. The absorption spectrum plots how much light is absorbed at different wavelengths by one or more different pigment types. Organisms have different optimal functional ranges, so it is for our benefit to discover the conditions that this process works best. If the environmental conditions of light intensity, light wavelength and pigment type are changed, then the rate of photosynthesis will increase with average light intensity and under the wavelengths of white light which will correspond to the absorption spectrum of the pigments. The null hypothesis to this would be; if the environmental conditions light intensity, light wavelength and pigment type are changed, then the rate of photosynthesis will decrease with average light intensity and under the white light which will correspond to the absorption spectrum of the pigments.

Introduction: Photosynthesis can be defined as a solar powered process that removes atmospheric carbon dioxide and transforms it into oxygen and carbohydrates (Harris-Haller 2014). Photosynthesis can be considered to be the most important biochemical process on Earth because it helps plants to grow its roots, leaves, and fruits, and plants serve as autotrophs which are crucial to the food chain on earth. Several factors determine the process of photosynthesis. Light is one these factors and is the main subject of this experiment. The intensity of light is a property of light that is important for photosynthesis to occur. Brighter light causes more light to touch the surface of the plant which increases the rate of photosynthesis (Speer 1997). This is why there is a tendency of higher rates of photosynthesis in climates with a lot of sunlight than areas that primarily do not get as much sunlight. Light wavelength is also a property of

In our study we sought to compare the oxygen output of three different types of photosynthetic organisms, a strain of pea plant, a lichen, and an Elodea sp. to find which species yielded the most oxygen per gram of mass. We hope that the information acquired in our study can be used in a similar way to Martin et al.’s study and hope it will be of especial service those seeking to transport or keep aerobic organisms in confined spaces,