Investigating How Plant Germination Will Be Impacted By The Presence Of Other Plants

Investigating How Plant Germination Will Be Impacted By The Presence Of Other Plants

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“Germination is a process in which a seed or spore awakens from dormancy and starts to sprout” (WiseGEEK). Plant germination can definitely vary if it is grown in different conditions, but I am investigating how plant germination will be impacted by the presence of other plants. I predicted that broccoli will have a positive impact on germination of lettuce seeds. To do this, I had two groups an experimental group and a control group. Both groups were provided with similar temperature, sunlight and water. I took a petri dish and added an equal amount of water through a pipette in each dish .Then placed a filter paper cut accordingly as a replacement of soil. Secondly, I placed a small piece of broccoli on top of aluminum foil in the center of the petri dish. Then I spread twenty five seeds unevenly surrounding the broccoli. Lastly, I covered the dish with the container and sealed it with tape. This method was laid out for the experimental group. I repeated the same procedure for the control group without placing the broccoli inside the petri dish. After a week, my results show that twenty one out of twenty five seeds of both control and experimental group germinated, but the length of stem of the experimental group was much longer than the other. Germination of seeds was not so affected because both the group had equal amount of seeds germinated, but the length of stem differed. Overall our results indicate that the presence of Broccoli did have a positive effect on the germination of lettuce seeds.

My hypothesis is that the presence of broccoli will have a positive effect on germination of plant seeds. In my results, I saw that the hypothesis was in my favor because the stems of the experimental groups were much ...

... middle of paper ...

...r the lettuce seeds. In my opinion, I might have done a few errors while working on my experiment because my broccoli was molded. For the future I would recommend to be more accurate and make 2 or 3 control and experiment groups because this will allow an individual to be more precise with better out coming results. What I feel I also did wrong was that the filter paper for control group was not covering the entire petri dish which may have affected the stem growth. A few lettuce seeds were not on top of filter paper; therefore they received less water than the others. To improve the results, make sure to tape the entire petri dish carefully because if the dish is not tightly covered their might be a chance for bacteria or any other thing to enter and effect your experiment and results. Which is why I think my broccoli was all molded because it was not so well taped.

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