Seed Removal

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Abstract

Why do seeds disperse to form new plants? If the seeds simply fell and grew beneath the parent plants they would be too overcrowded and would be starved of nutrients. So it is important that the seeds are dispersed over a wide area where they stand a better chance of finding the right condition to grow. In this experiment I predicted that the red color of jello would have the highest mean number of seeds removed from the aluminum tin pan. Also, between site 1 and site 2 of jello set out, site 1 would have a higher total number of seeds removed. Basically, for this lab we placed ten oat seeds in five different colors of jello: red, yellow, orange, blue, and green which were molded into an aluminum tin pan. We also had two controls in which there was no jello. We placed the tin pans out onto two experimental sites. For a period of seven days, a group member would go out to the sites (approximately the same time of day) and replace the seeds in each tin pan and dispose of the old seeds away from the sites. The number of seeds removed from each tin pan was recorded. A chi-square test was calculated from our data and a p-value of 0.75 was determined. Results show that the highest mean number of seed removal came from the tin pans with the jello colors of blue and green. Red being the second lowest mean number of seeds removed. Also, site two had the higher total number of seeds removed compared to site one. The calculated p-value of 0.75 indicated that our data was statistically insignificant. There could have been many factors influencing our results since we are dealing with nature.

Introduction

Flowering plants reproduce themselves by producing seeds. The seeds also provide the plants with a way to spread out and grow in new places, sometimes a long way from the parent. This is important because if the seeds are not dispersed, many germinating seedlings will grow very close to the parent plant. This results in competition between every one of the seedlings as well as with the parent plant. The competition is for light, space, water and nutrients. All of these are important for plants to be able to grow. (3) Seeds can be dispersed in a number of different ways. They may be carried by wind, water or animals.

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