Non Inoculated Groups Of Plants

I observed nodules on the group of plants that had been inoculated. The presence of these nodules represents a successful inoculation. The non-inoculated group did not have nodules, indicating that no Rhizobia bacteria were present. In my hypothesis, I predicted that the plants with bacteria would grow taller, faster, and healthier than those plants without bacteria. My experimental data supports this hypothesis. With one exception, the inoculated plants were consistently taller than the non-inoculated plants throughout the entire project. The plants with bacteria grew faster, taller, and healthier because they were receiving more nitrogen than the plants without bacteria. The Rhizobia bacteria provided the plants with an abundant source of nitrogen through the process of biological nitrogen fixation. …show more content…
The soybeans use ammonia to construct amino acids, which are later used in protein synthesis. To grow, plants need to synthesize proteins. Therefore, the beans with bacteria would always have enough ammonia to create the proteins that they required for growth. The non-inoculated plants, however, would rapidly consume the nitrogen in the soil and would then be unable to synthesize amino acids. Since no bacteria were present and no fertilizer was added, once the plants used their nitrogen, there was little left. With the nitrogen available to synthesize amino acids, a slowing of protein synthesis resulted, and, as a result, growth as well but in a very slow process. This is the reason why the inoculated plants grew taller than the non-inoculated plants. Nitrogen also contributes to vibrant, green plants. If one looks at the pictures, one will see that the inoculated plants were much healthier than the non-inoculated