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</html>";s:4:"text";s:6712:"Click HERE
to return to the Natural Systems Menu. The purpose of this lab is to find out if variations in Acer saccharum (sugar maple) seed structure affect dispersal distance. Our factors varied between notebook or construction paper; 1, 2, or 3 paper clips on the body of the helicopter; and 0, 1, or 2 staples on the model helicopter wings. yijkl = M + ?j + ßk + ?l + ?ßjk + ? Averages were compiled comparing the differences between the three seed designs, these included: seed length, inner and outer angle, weight, distance from the ladder, initial fall distance, and total time of flight. 5. However, according to the data, it appears that the longest flight time, an average mean of 4.51 seconds, was achieved by the helicopter with 1 paper clip, 0 staples, and made of notebook paper. Flies through the Air: The seed is blown by the wind and moves faster than a seed floating on air. Each student will be given one seed and asked todrop it from the top of the ladder, while the rest of the students observe initial fall distance. We maintain that it does. Both Boomerang and Long Straight samara designs were found on tree two which was located in the regions of Ernst Theater. We assumed there was equal variance for all factors when we tested it because we got a larger p-value than .05. We are hesitant however, to discount the advantages of the other two designs. 10. 8. While we see self-dispersal of seeds in some plants, others require external agents for the same. General Linear Model: flight time versus paperclips, staples, paper type, paperclips*staples 4 5.8316 1.4579 6.04 0.000, paperclips*paper type 2 2.1644 1.0822 4.48 0.015, staples*paper type 2 0.5064 0.2532 1.05 0.356, paperclips*staples*paper type 4 3.0563 0.7641 3.17 0.019. Want us to write one just for you? The location of the tree may indeed also have bearing on the structure of the samara. P-value (.0193)All of the samara features are interdependent with one another. Maple trees, in turn, will not be required to produce seeds with designs that emphasize the use of wind in dispersal. Equipped with this newfound knowledge they can deduce which seed design is most advantageous for dispersal. The Art of Post-Impressionism in Paul Cezanne's Farmhouse and Chestnut Trees at the Jas de Bouffan and Vincent van Gogh's Mulberry Tree Essay, The Reasons And Impact Of Deforestation Essay, The Effect of Eucalyptus Oil on Pests and Weeds Essay, Tree Planting The Pinnacle Of Landscaping Essay, All about a small tropical legume tree Calliandra Essay, Essential Bonsai Supplies For Healthy Plants Essay, Christmas Tree Themes: Are They Really Worth It? We had assumed that the design with a more extreme inside angle would fall into initial autorotation the earliest and travel the greatest distance. Seed dispersal basically refers to movement of plant seeds from one point to another. All four variables were correlated with the distance traveled from the ladder. By studying this design, we are hoping to find which variables allow the seeds to travel farthest, making them more optimal for populating an area. Different Methods of Seed Dispersal in Plants. When we removed length from the analysis in Step one, inside angle became the most determining with a partial correlation of (-.324) and these results are significant according to the p-value (.0455). Based upon these averages we were able to make a few general observations. 4. = Paperclips, ß = Staples, ? Response Title:
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Article complete. For our experiment we chose to test these three factors: number of paperclips, number of staples, and paper type. Also observe the distance the seed dropped before autorotation by using a vertical tape measure, attached to the wall. We performed regression plot summaries, which show the significance of the relationships between variables and not justamongst the seed types. Maple trees, in turn, will not be required to produce seeds with designs that emphasize the use of wind in dispersal. The weight of the seeds, the inner and outer angles of the wings, the length of the seed, and wing shape, will be compared and contrastedto each other. Our results show that the Quillpen design is the most advantageous for lower branches of a tree located in a partially open landscape. Here is a data table of our results:Distance from ladder (cm) Initial fall distance Total time (s)Tree #2 Trial 1 Trial 2 Trial 1 Trial 2 Trial 1 Trial 2Seed 1 48 47 16 15 0.97 1.5Seed 2 105 44.5 11 13 2.6 1.5Seed 3 40.6 73 14 10 2.1 1.88Tree #2 Weight Angle Length ShapeSeed 1 0.04 72/108 2.0 BoomerangSeed 2 0.04 60/115 2.2 BoomerangSeed 3 0.04 55/110 2.5 BoomerangOne must take into account the following conditions when interpreting these results: The tests were performed using seeds from the same sampling pool as the ones used five weeks earlier. Coconut, palm, mangroves, water lily, water mint, are a few examples of plants whose seed are dispersed by the water. Surprisingly though, we discovered that the Quillpen stayed in the air longer than the other, lighter, seed designs. 11. Reference Appendix C for all t-tests, regression plot summaries, and bar graphs 1 2 3. = 0 e~Nind(0, s2). The location of the tree may indeed also have bearing on the structure of the samara. The paper type did not have much effect on the staples. The p-values derived from these tests indicated that the observed differences in means in the following relationships are significant and the results of our experiment are notproducts of chance: -The differences in the outside angle amongst all the seeds types. We decided to do this to increase data for the Boomerang design and to represent both inferior designs. 14. As expected, the boomerang, with the smallest inner curve (47°) fell into autorotation the earliest. For instance, within a high-density location, such as a forest, less wind will be generated. The following chart shows these averages: Long Straight Boomerang QuillpenLength (cm) 2.802 2.5 4.94Angle 54.24°/ 53.88° 47°/ 71.05° 166.2°/ 43.8°Weight (g) 0.1012 0.06 1.12Distance from ladder (cm) 13.81 10.5 27.1Initial fall distance (cm) 138.6 90 120Total time (s) 1.968 1.95 1.85Based upon these averages we were able to make a few general observations. This is not an example of the work written by professional essay writers. Having trouble finding the perfect essay? Remember: This is just a sample from a fellow student. All four variables were correlated with the distance traveled from the ladder. ";s:7:"keyword";s:27:"maple seed dispersal method";s:5:"links";s:525:"<a href="http://sljco.coding.al/o23k1sc/igcse-biology-textbook-566a7f">Igcse Biology Textbook</a>,
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