Plant Competition

1284 Words May 16th, 2015 6 Pages
Plant Competition
INTRODUCTION

This experiment was used to show the different types of competition between species. Competition was defined as being a “relationship between members of the same or different species in which individuals are adversely affected by those having the same living requirements, such as food or space” (Competition 2010). There are two different types of competition that we will be observing during this experiment. The first type would be intraspecific, which means “competition between same species” (1976). The second type of competition is interspecific, which is defined as “competition between different species” (1976). These two types of competition have helped us look at the different types of interactions
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The first pot was filled with bean seeds and exposed to only high light. The second pot was filled with radish seeds and exposed to only high light. The third pot was filled with bean seeds but exposed to low light. The fourth pot was filled with radish seeds and exposed to low light. The fifth and final pot was filled with bean and radish seeds. After allowing the plants to grow we then measured the length of the largest leaf on each plant. We then cut the plants and weighed them. To measure the leaves we used a standard ruler measuring the largest leaf on each stalk. We then cut the plants as close to the soil as possible and weighed them individually on a scale.

RESULTS Radish Leaf Length | Radish High | Radish Mixed | Mean | 42.63245 | 31.7856 | Variance | 73.44780158 | 144.792493 | Observations | 22 | 20 | df | 40 | | t Stat | 3.388687743 | | P(T<=t) two-tail | 0.001589122 | | t Critical two-tail | 2.02107539 | |
The significance is to show that this is an example of interspecific competition and which radish is the better competitor. Based on this chart, the radish high is the better competitor because it produced the most observed sprouts. However, the radish mixed had a higher variance and larger leaves so this would mean that the radish mixed would be a better competitor the for leaf length. Bean Leaf Length | Bean High | Bean Mixed | Mean | 55.81304348 | 67.84434783 | Variance | 169.6868403 |

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