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What are the best conditions for the germination of seeds?

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Introduction

What are the best conditions for the germination of seeds? Aim I am going to control the temperature surrounding the test tube in order to see how this factor affects the germination of seeds. In order to achieve this, all the other factors, light, oxygen content, and water would be kept at a constant level. Control The variable is therefore the temperature, so therefore I would use water baths, the freezer, and room temperature to control this factor. (Refer to figure 1.) Prediction I think a "warm temperature" would be the best condition for the germination of seeds. A warm temperature would be around room temperature. Low temperatures would stop the activities of the cells responsible for this process. Vice versa, high temperatures would stop the process too as the cells are denatured. ...read more.

Middle

6) Check all the test tubes at the same time everyday for 5 days, and collect results. Results Room Temperature Day Number of Seeds Germinated / Total = 14 Percentage of Germination (%) 1 10 71 2 12 85 3 12 85 4 13 92 5 13 92 Freezer Day Number of Seeds Germinated / Total = 14 Percentage of Germination (%) 1 0 0 2 0 0 3 0 0 4 0 0 5 0 0 45 degrees Day Number of Seeds Germinated / Total = 14 Percentage of Germination (%) 1 3 21 2 5 36 3 8 57 4 8 57 5 8 57 50 degrees Day Number of Seeds Germinated / Total = 14 Percentage of Germination (%) 1 0 0 2 1 7 3 1 7 4 2 14 5 2 14 55 degrees Day Number of Seeds Germinated / Total = 14 Percentage of Germination (%) ...read more.

Conclusion

obtain sunlight, therefore it was only exposed to 1 condition, which directly makes the results unreliable * The room temperature always alters as the air-conditioning is switched on and off numerous times. The change of season might also affect the room temperature. * Seeds wouldn't be able to germinate at night, as there is no sunlight. In order to improve my experiment and make my results more reliable, I would do the following to adjust my method: * Conduct the room temperature experiment in a room where the temperature is kept constant all the time. * Conduct the freezing experiment in a room, which has the same temperature as in the freezer, but the test tube, is exposed to light. However, this is very difficult to find such a location. * Conduct the experiments in a room, which uses artificial sunlight (lamps), allowing the seeds to germinate overnight. By: Kevin Cheng 11T ...read more.

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