Ethan Peck Botany 11/10/09 “Vita-light verse Normal” {draw:frame} Figure 1. Average plant height for fast plants grown under two light treatments regular lighting and Vita light bulbs. My hypotheses for plant height was as follows: I belived that vita lite was going to be tremendously better than the normal lighting due to manufacture claims but as the evidence shows normal lighting did better. For reason I that could of went either way. {draw:frame} Figure 2.
25. Where in plant cells are the energy-absorbing molecules for photosynthesis located? 26. The part of cellular respiration that needs oxygen takes place inside the 27. Write the chemical formula for photosynthesis.
Effect of ammonium nitrate on Ceratopteris richardii Abstract: Ceratopteris richardii, also known as C-fern, is commonly used in research studies as a model plant because of its short generation time. In this experiment, we aimed to observe the effects of ammonium nitrate on this species of ferns. To achieve this, we inoculated and evenly spread three drops of C. richardii spores into two separate and sterile petri dishes, one control group and one experimental group. The experimental treatment contained 1% ammonium nitrate on the medium and the control treatment was merely a normal nutrient-rich agar. Then, we performed an f-test and a t-test to determine if there was any germination difference between the treatments.
I collected 2 olive leaves from the north side which are exposed to low sunlight density and 2 olive leaves from the south side which are exposed to high sunlight density. I placed the north side leaves in a Ziploc bag labeled north and the south side leaves on another Ziploc bag labeled south in order to avoid getting them confused. I then traced each leaf from the low sunlight environment onto a paper, cut around the outline, weighed the leaves and made sure to keep track of their weight. I also repeated these steps with the leaves from the high sunlight environment. In order to calculate the leaves’ surface area, I used the conversion factor of a 100mm x 100mm paper which is (Mass/Surface Area = .000122mm^2).
These experimental parameters were later abandoned. Identical plantings were conducted again and sunlight levels and predation via caterpillar responses were observed in laboratory conditions alongside controls to study the relationship between both variables and plant growth/survival. Data concluded that sunlight has the largest effect on the fitness of Brassica rapa and higher levels of sunlight coincided with higher levels of growth both horizontally and vertically in plant height, plant width, leaf numbers and leaf are. This research leads a much larger discussion of how plants respond to changing environmental conditions. Introduction: Plants use sunlight to separate water molecules in combination with carbon dioxide to create the sugars it uses to grow and survive and it is therefore highly important in the process of photosynthesis.
The hypothesis for this experiment was that the higher the concentration of hairspray added to the plant, the bigger the effect, and therefore the least amount of growth. It was figured that if the seeds that were contaminated with 15% concentration of hairspray grew the least and the 5% concentration grew the most (besides the control group), then the hypothesis would be accepted and the contaminant would have a trusted effect on the radish seeds. Methods To start the experiment students gathered four plastic plant pots that were 3.5 inches in diameter, filled each with provided soil up to about one inch from the top. 20 seeds of Wisconsin fast plant (radish seeds) were added to each pot of soil. The pots were labeled: control, 5%, 10%, and 15%.
We made this inference due to our slope of each of the graphs. Given the mole ratios, the slope of our newer lab, comparing H2 to moles of Mg, should’ve been a slope of 1. But our first point skewed our results giving us an actual slop of 0.7, which was short from a more accurate result. And given our results last week, we concluded that our titration method was more accurate than our crystallization method due to the basically perfect slope of 2.0018 which is very close to the theoretical slope of 2. 5.
Plants are the producers for an ecosystem. They photosynthesise carbon dioxide and water and produce energy in the form of carbohydrates and other molecules. Photosynthesis requires water, and plants gain water from the soil using mineral ions such as nitrate produced by the nitrifying bacteria. Hydrolysis of ATP releases energy for processes such as active transport of the nitrate ions (and others such as potassium etc) from the soil into root hair cells, a process that lowers water potential and is used to draw water into the plant from the soil. In leaves, photosynthesis involves the photolysis of water, a process that involves the attachment of two electrons to a magnesium ion in chlorophyll and the production of hydrogen ions from the breakdown of water.
Bromthymol Blues Lab Introduction In this lab our group will demonstrate if carbon dioxide (CO2) is present during photosynthesis and cellular respiration. We will attempt this experiment by using an indicator called bromthymol blue. This indicator will turn yellow if CO2 is present during cellular respiration and during photosynthesis the indicator will turn from yellow to blue if the CO2 has been absorbed by the plant. II. Purpose To demonstrate that CO2 is used during photosynthesis.
They can reach sizes of 1.5-3.5 meters. Moderate temperatures such as 21-26 degrees Celsius are the best temperature environments for optimum growth. Temperatures that range from 18-33 degrees Celsius show very little growth affect on the sunflower. The extent of plant growth increase or decrease at a certain temperature will depend on the plant species (Compant et al, 2010). The depth of the seed will affect the way and how fast the sunflower seed grows.