Petric Competition Experiment

Competition happens between two or more things. In talking about plants they compete with each to survive. When competing against each other to survive they are using soil, water, nitrogen, and space. In using theses resources and having theses available gives the plant a greater chance in living. Even though plants compete environmental wise it is still scene that there is a lot of unknown to why plants compete. Some researchers believe it could be because of the root size of an individual plant or the size of the seed, which gives it better competition in surviving (Miller, 1995). Different types of competition can happen between plants likes intraspecific and interspecific competition. Miller (1995) believes there is not enough research shown to make a determination as to why competition between plants happens and that there should be research done in looking at the evolution of plants in different environments where they can compete with each other. In looking at competition in plants in class the experiment that we conducted looks at the Brassica rapa in a intraspecific competition in different densities. Miller (1995) found that the B. rapa in intraspecific competition did have increase in the number of flowers that were produced. Comparing this to the finding of Miller, when looking at different densities of plants in a interspecific competition could the B. rapa have more of a change in growth because a higher density will have more seeds and the B.

Introduction In this experiment, radish seeds were exposed to several different kinds of solutions (salt, soap, vinegar, fertilizer, distilled water) to test how different environmental pollutants affect seed germination. Because there are several kinds of solutions being tested in this experiment, there is more than one hypothesis. The hypotheses for this experiment are as follows: The use of fertilizer solution increases radish seed germination and growth. The use of salt solution decreases radish seed germination and growth.

However, for each quad, the fertilizer used for the control was added altogether with the fertilizers being studied. Since the only plant that presented growth was in the control quad, it becomes necessary to explore the effects of excess fertilizers, and furthermore, excess nitrogen, would have in the development of the fast plants. Although Nitrogen is one of the elements most living organisms require, some studies have showed high levels of nitrogen can cause toxic stress to some plants, to the point where growth can be inhibited. (Yu et al.

Competition is when organisms compete for resources. Whether as in predation or herbivory is like predator and prey, where one organism is the predator and the other serves as its prey. Symbiosis has to do with parasitism, commensalism and mutualism. Parasitism, an organism benefits of a host ( another organism).Commensalism is a form of symbiosis, where one of the organisms assets and the other one is less likely to not be affected. Mutualism like the word mutual where both of the organisms

Plants are one of the most complex organisms; how they grow is very complex and it is important to see how they grow to even how they die. We first had to propose a question and test it to see if it was profound enough to test. Our group decided to see how different chemical substances affect radish plants, and which substance will kill the plant fastest. We planted 8 germinated radish seeds, then put ammonia in 2 of the plants, vinegar in 2 other plants, put both vinegar and ammonia in 2 other plants, and had the

Both of the fertilizers helped the plants grow; making them grow taller on average compared to the plants that received no fertilizer. Plants grown under red light grew taller on average then the plants grown under white light, however, plants grown under blue light did not grow as tall on average as the plants grown under white light. k. Why was it important to use more then one seedling for both your test group and your control group? Sometimes seeds fail to germinate which could skew the data leading to false conclusions. Plants often grow at different rates with outliers

While experimenting with the green beans, the seeds exposed to the organic plant food germinated within five days of the experiment and the seeds exposed to the chemical plant food germinated within six. The seeds that acted as the control had been expected to grow the least, however, it was surprising that they did not grow at all. Both the chemical and organic fertilizers proved to have positive results on the plants. It was also unexpected when the seeds exposed to the chemical plant food surpassed the height of the other experimental seeds after being shorter. The predicted reason for the increase in growth with seeds given Miracle Grow was because chemical fertilizers automatically store up the nutrients and disperse it constantly throughout

Plants are found everywhere on earth, up high on the ridge and down low in caves and caverns. The types of plants that live in these places depends on many factors. These factors are separated into two different categories, the biotic factors and the abiotic factors. Some of the biotic factors include, predation, competition, and habitat destruction. Plants with limited competition and large amounts of resources will be in a higher abundance than plants with limited resources and higher competition rates will be confined to areas and either out competed or will be the dominant species. Certain plants adapt to these factors and thrive and others don’t do as well. Some of the abiotic factors include, sunlight, water, temperature, and wind. These

Results and discussion: The percent growth on the last day was still growing: the control was 86%, 50,000 rads was 84%, 150,000 rads was 92%, 500,000 rads was 78%, and 4 million rads was 0%. The overall success of the radishes germination was the that 4 million had the least germinated, than 500,000 rads, 50,000 rads was next, and with the most was the control. The root lengths of all the trays were: 66mm for the control, 50mm for 50,000 rads, 150,000 rads was 48mm, 500,000 rads was 13mm, and 4 million rads was 0 mm.

In the dishes, I dropped the appropriate treatment into the center, where the marks were made. Next, I closed the petri dishes, taped them up, and let them sit at room temperature for a week. Then I opened them up to take two measurements. The first measurement was the number of seeds germinated. The second measurement was to measure the seedling lengths.

The hypothesis, “If the amount of hand sanitizer in the Petri dish increases, then the radish germination will decrease," was supported by the data. With no drops of hand sanitizer on the radish seeds, the germination of the seeds was 100%. Then, with 1 drop of hand sanitizer in the dish, 60% of the radish seeds germinated. The radish seeds with with 3 drops of hand sanitizer only germinated 40%. The germination decreased 40% from dish 1 to dish 2, and then another 20% from dish 2 to dish 3. A total decrease of 60% was observed between dish 1, with 0 drops, and dish 3, with 2 drops. The results of the lab connect back to the waste and water pollution unit because the information learned in those environmental science units

The materials needed for the experiment include radish seeds, sand, a scale, paper towels, a graduated cylinder, a ruler, and plastic Ziploc bags. For the 4 experiments, 20 of the radish seeds were counted per experiment, for a total of 80 seeds. Then, the mass of each group of 20 seeds was measured. Then, the 3 experimental groups were shaken in a bag of sand. Sample A was shaken 5 times, Sample B was shaken 20 times and Sample C was shaken 40 times. For the Control group, the seeds were not shaken in a bag of sand.

Therefore, I was correct in my hypothesis that dark will have an effect on the germination of radish seeds. Also, I was very close in predicting that the seeds grown in the light will germinate twice as much as the seeds grown in the dark; the control seeds grew a little less than double the size of the experimental seeds. Ultimately, my experiment proved that light is a very important factor in the growth of any plant. However, I’ve learned that seeds grown in the dark will germinate, though slowly, as

Organisms interact in ways that affect themselves in a positive or negative manner, either benefiting or harming one or both organisms. For example, in mutualism, organisms interact in a positive way that benefits them both. Competition is a negative interaction in which the organisms harm each other, and this is over a limiting resource, which is oftentimes food, water, or other necessities to the organism’s well being. There are two types of competition: interspecific and intraspecific. Interspecific competition occurs between two different species of organisms, whereas intraspecific competition is within the same species. Within the scope of plant interactions, some of the resources that plants would compete for include light, water, and nutrients in the soil (such as minerals). The reason they would compete for these resources is because plants require these specific resources for photosynthesis, the process by which they produce energy for their activities. For individual plants in competition, they both will have decreased levels of growth, survival, and/or reproduction because of the lack of resources. In terms of community composition, this is primarily determined in the amount of interspecific and intraspecific competition occurring. In a community, more species can coexist if the amount of interspecific competition is less than the amount of intraspecific competition. This is because interspecific competition directly lowers the amount of

This research will add further data on the effects of interspecific competition. While this is not an extended project it demonstrates interspecific competition between vegetables, carrots and radishes. Which can then be extended to the competition between indigenous and invasive plants.