Butterbur Plants Lab Report

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.

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

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.

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

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.

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.

2.) Make a hypothesis about which color of the visible light spectrum causes the most plant growth, and which color of the visible

In my research paper, I will attempt to determine how the perception of light in phytochromes plays a role in the development of plants. Specifically, I will look at how phytochromes play a role in the growth and development of Arabidopsis thaliana. The paper will also look at how light perception plays a role in phototropism and the immune systems of a plant. Finally, my paper will explore how changing light conditions impact perception in phytochromes.

All types of corn must be grown in the same soil and nutrient conditions, watering amounts and light conditions. They must be grown in separated plant chambers, and the seeds will be planted in three pots and each grow chamber will be labeled. The amount of ECB that is added to the plantation must always be in the same quantity corresponding to

What is the affect of colors of light, red, blue, and green, on the height (cm) of Cynodon dactylon (Bermuda Grass)? If the affect of the colors of light, red, blue, and green, is measured on the height of Cynodon dactylon, red will provide the highest height and blue will provide the lowest. The goal of the experiment is to interpret and record the height (cm) of Cynodon dactylon (Bermuda Grass) when it is exposed to different colors of artificial light, and compare the results to when it is exposed to natural light. With this information, farmers could develop effective and efficient method to grow plants indoors and limit the exposure to uncontrollable environmental factors.

The results were conclusive and differed slightly from previously expectations with the plants germinated with an absence of light growing on average 17.975 mm per day compared to the plants with exposure to light growing 6.965 mm less at an average of 11.01 mm per day. This trend was evident throughout the duration of the experiment however as the investigation continued it was clear the growth of both plant sets was beginning to decrease and slow. As shown in graph 2.0 and table 1.0 on day 15 the plants grown in the dark had reached a height of 175.9 mm and by day 17 they had only grown 1.475 mm and reached a height of 177.375 mm, compared to the growth between day 8 and 9 when the plants grew by 44.375 mm, a 48% increase, nearly doubling its height of 47.85 mm on day 8. The heights of both sets altered from each other for most of the experiment expect for day 10 when the heights only altered by 0.891 mm with the plants in the dark having a average height of 108.125 mm while the plants with light had reached a height of 108.944 mm.

Measuring the Effect of Light Intensity on Photosynthesis Introduction Photosynthesis captures energy from sunlight. Plants, algae, and some bacteria use the energy captured during photosynthesis for their metabolic reactions. During photosynthesis in plants, chlorophyll and enzymes in leaves convert certain wavelengths of light into chemical energy. A simple equation can be used to represent photosynthesis. Enzymes and Chlorophyll light energy CO2 H2O carbohydrate O2

The goal of the experiment is to determine how the type of light affects the rate of photosynthesis. If the light source is changed from a white light bulb to a LED light bulb, it is predicted that the rate of photosynthesis will increase.

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.

Different colors of light affect the development of plants in different ways. The rate of photosynthesis of each plant will differ depending on the color of the light that is emitted on it. Once the carbon dioxide is produced it will react with the water in the aquatic system, thus producing carbonic acid. We measured the carbonic acid levels with the help of phenolphthalein and sodium hydroxide to conclude that the brighter the color of the light is, the faster the plant will photosynthesize, and thus the lower the carbonic concentration of the aqueous solution.