Biology 1108 Lab Section
November 7, 2012
Abstract
The effect of water and fertilizer on corn seedlings was examined. It was hypothesized before the experiment that enough water with sunlight and air should make the plants grow healthy. It has to do with photosynthesis. Fertilizer is also going to make the plants grow much faster; this is because of the nutrients in it. The experiment took about four to six weeks to complete; it took some days for the seed to germinate before planting. The corn was growing there were four different groups for they were the control, drought, fertilizer, and double water. There was enough sunlight and water for them all according to the groups. T-tests were taken to get the p-value and t value, the leaf area, height, and biomass were measured and were compared with each other to be able to get the results. At the end, the experiment turned out to be successful and came to a conclusion.
Introduction Plants need nutrients for their growth; this experiment was the growth of corn/maize. Photosynthesis plays a big role in plants, it is the way plants use light energy, water and carbon dioxide to make sugar, which is like a fuel to the plant. When light energy is changed to chemical energy, it forms glucose molecules, which are the building blocks of plant cells. A plant cannot grow without photosynthesis. “Plants are exposed to a wide variety of abiotic stresses, including excessive light, extreme temperatures, water stress, and atmospheric pollutants, which can directly or indirectly affect photosynthetic function.” (H.Gao et al 2011). Plant nutrient is also something important in plant growth, there are three primary nutrients that must be present in plants, and they are Phosphorus (P), Potassium (K), and Nitrogen (N). Phosphorus is essential because it promotes cell division, stimulant plant production and root development. Potassium helps with photosynthesis, seed
Cited: L. F. M. Marcelis, et al. "How Plant Architecture Affects Light Absorption And Photosynthesis In Tomato: Towards An Ideotype For Plant Architecture Using A Functional–Structural Plant Model." Annals Of Botany 108.6 (2011): 1065-1073. Academic Search Complete. Web. 27 Nov. 2012. Tables and Figures Figure 1: This graph represents the mean (average) height (in centimeters) of the four groups of corn plants. The error bars signify the standard deviation of the four different groups. Figure 1: This graph represents the mean (average) height (in centimeters) of the four groups of corn plants. The error bars signify the standard deviation of the four different groups. Figure 2: This graph represents the average biomass of the four groups of corn plants. The error bars signifies the standard deviation of the four groups. Figure 2: This graph represents the average biomass of the four groups of corn plants. The error bars signifies the standard deviation of the four groups. Figure 3: This graph represents the average leaf area of the four groups of corn plants. The error bars signifies the standard deviation of the four groups. Figure 3: This graph represents the average leaf area of the four groups of corn plants. The error bars signifies the standard deviation of the four groups.