Seed Germination Lab Report
QUESTIONS
1) The control in this experiment was the bag that contained the radish seeds with tap water. This was an important part to have in the experimental design because I was able to compare this to the other bags that contained coffee, ammonia, and vinegar. With the results that I collected, I was able to gather more observation and data.
2) The independent variable in this experiment was the pH level of the solutions, whereas the dependent variable was number of seeds that each solution was able to germinate. Some control variables were the amount of seeds given for each solution, amount of sunlight, and the amount of days allowed to grow.
3) The effect of pH on seed germination was an obvious pattern. The solution that had a pH closer to seven such as water (7) and coffee (7.5) germinated all five of their seeds. On the other hand, solutions like vinegar (3) and ammonia (11), whose pH were nowhere near seven, grew little or no seeds. This …show more content…
is because the pH range that is ideal for life is 6.5 to 8.2
4) Other factors of seed germination might have been how close the seeds were put towards the light after taking observations. Also, it could be how much solution that you “feed” the seeds, because there really wasn’t an exact measurement.
5) During seed germination, the embryo will use its stored food to grow into an adult plant, but in most seeds, the food is stored in the seed leaves as starch. Before it can be used for energy, it needs to be broken down to basic sugars. It cannot pass through the living membrane because of the large molecular structure. The breakdown of starch is down with enzymes.
6) The pH of rain is altered because is it not just rain once it falls, but it is mixed fossil fuels like coal, oil, and gasoline. This fossil fuels may contain sulfur and nitrogen, but is not limited to. While water has a pH of 7, rainwater’s pH can be a little under 6. The pH can vary depending on the region of where it falls because some area might be more polluted than others. This issue is every serious, as it can also affect our drinking water, which can in turn, effect us.
Sources: textbook.
Structure:
Last, First M. Book. City: Publisher, Year Published. Print.
Examples:
James, Henry. The Ambassadors. Rockville: Serenity, 209. Print.
•Dickens, Charles. Great Expectations. New York: Dodd, Mead, 1942. Print.
U.S. Department of the Interior | U.S. Geological Survey - URL: http://ga.water.usgs.gov/edu/acidrain.html - Page Contact Information: Howard Perlman - Page Last Modified: Thursday, 10-Jan-2013 09:59:31 EST
Citation the encyclopedia of earth
Likens, G. (2011). Acid rain. Retrieved from http://www.eoearth.org/view/article/149814
Published: August 7, 2010, 1:28 pm
Updated: October 17, 2011, 12:30 pm
Author: Gene Likens
Topic Editor: Wayne Davis
CONCLUSION
In conclusion, the purpose of the lab was to determine the effects of pH on seed germination.
After going over this and the procedure, we then came up with four hypotheses, one for each of the four solutions: coffee, vinegar, ammonia and tap water. Predicting what would happen, two of the four of my hypotheses were that coffee and water would grow, or germinate, seeds, which after the conclusion of the experiment, was accepted. Also, another hypothesis predicted that seeds in vinegar would not germinate, which was also accepted along with the other two. The last hypothesis stated that seeds in ammonia would not germinated, which the experiment proved false and thus, was rejected. This lab is applicable to life, of course. It proved that seeds soaked in solutions with their pH around 7 will help them grow maturely and healthy. After further research, the text read that a pH around 6.5 to 8.2 is the optimal range for life. Because of this lab, the effects of pH are better understood and can be related to
everyone.
1) The control in this experiment was the bag that contained the radish seeds with tap water. This was an important part to have in the experimental design because I was able to compare this to the other bags that contained coffee, ammonia, and vinegar. With the results that I collected, I was able to gather more observation and data.
2) The independent variable in this experiment was the pH level of the solutions, whereas the dependent variable was number of seeds that each solution was able to germinate. Some control variables were the amount of seeds given for each solution, amount of sunlight, and the amount of days allowed to grow.
3) The effect of pH on seed germination was an obvious pattern. The solution that had a pH closer to seven such as water (7) and coffee (7.5) germinated all five of their seeds. On the other hand, solutions like vinegar (3) and ammonia (11), whose pH were nowhere near seven, grew little or no seeds. This …show more content…
is because the pH range that is ideal for life is 6.5 to 8.2
4) Other factors of seed germination might have been how close the seeds were put towards the light after taking observations. Also, it could be how much solution that you “feed” the seeds, because there really wasn’t an exact measurement.
5) During seed germination, the embryo will use its stored food to grow into an adult plant, but in most seeds, the food is stored in the seed leaves as starch. Before it can be used for energy, it needs to be broken down to basic sugars. It cannot pass through the living membrane because of the large molecular structure. The breakdown of starch is down with enzymes.
6) The pH of rain is altered because is it not just rain once it falls, but it is mixed fossil fuels like coal, oil, and gasoline. This fossil fuels may contain sulfur and nitrogen, but is not limited to. While water has a pH of 7, rainwater’s pH can be a little under 6. The pH can vary depending on the region of where it falls because some area might be more polluted than others. This issue is every serious, as it can also affect our drinking water, which can in turn, effect us.
Sources: textbook.
Structure:
Last, First M. Book. City: Publisher, Year Published. Print.
Examples:
James, Henry. The Ambassadors. Rockville: Serenity, 209. Print.
•Dickens, Charles. Great Expectations. New York: Dodd, Mead, 1942. Print.
U.S. Department of the Interior | U.S. Geological Survey - URL: http://ga.water.usgs.gov/edu/acidrain.html - Page Contact Information: Howard Perlman - Page Last Modified: Thursday, 10-Jan-2013 09:59:31 EST
Citation the encyclopedia of earth
Likens, G. (2011). Acid rain. Retrieved from http://www.eoearth.org/view/article/149814
Published: August 7, 2010, 1:28 pm
Updated: October 17, 2011, 12:30 pm
Author: Gene Likens
Topic Editor: Wayne Davis
CONCLUSION
In conclusion, the purpose of the lab was to determine the effects of pH on seed germination.
After going over this and the procedure, we then came up with four hypotheses, one for each of the four solutions: coffee, vinegar, ammonia and tap water. Predicting what would happen, two of the four of my hypotheses were that coffee and water would grow, or germinate, seeds, which after the conclusion of the experiment, was accepted. Also, another hypothesis predicted that seeds in vinegar would not germinate, which was also accepted along with the other two. The last hypothesis stated that seeds in ammonia would not germinated, which the experiment proved false and thus, was rejected. This lab is applicable to life, of course. It proved that seeds soaked in solutions with their pH around 7 will help them grow maturely and healthy. After further research, the text read that a pH around 6.5 to 8.2 is the optimal range for life. Because of this lab, the effects of pH are better understood and can be related to
everyone.