Thanks Jose.
About point 3. Do you know guys how much this hydrogen peroxide should be diluted and how long should i keep the seeds on it?
Anywas, thats interesting study about h202 using on seeds, take a look and tell me what do you think about to use it on yours banana seeds at described proportion please.
http://zizou10thgrade.weebly.com/upl...eddocument.pdf
Heres part of txt from the pdf
What percentage of hydrogen
peroxide mostly stimulates the
germination of a seed?
Hypothesis:
In my opinion, 8% of hydrogen peroxide will mostly stimulate the germination of the seeds.Statistics
say that 3-10% range of amount of hydrogen peroxide will provide the seed with better
resources ,thus germinating faster.''
Conclusion:
Seeds that have been watered with 4% hydrogen peroxide showed little results .Seeds in Trial 1 have
had a success of forty percent as the others had a success rate of thirty percentage.Most of the seeds
barly germinated and the average is 3.33,thus a third of the seeds.
Seeds in 6% hydrogen peroxide category have shown better results than the previous.The lowest rate
is 30% and the highest is 50%.Seeds in this category have acheived a success rate of one half,which is
pretty good.The average is 40% making it the second highest rate in this experiment.
As the data table shows, seed that have been watered with 8% hydrogen peroxide have a higher
percentage of germinating. More than half of the seeds germinated in each trial,resulting in
an average of 6 seeds germinating out of ten.The percentage of a seed germinating under ten
millimeters of 8% hydrogen peroxide is sixty percent.
The results of 10% hydrogen peroxide showed less results than eight percent.Trial 3 is the only one
to acheive a rate of 50%,as the others both have a rate of 30%,decreasing the average rate :3.6 seeds
germinated out of 10.
12%hydrogen peroxide has shown the least results with all the trials showing a success rate of 20%;
⅕ out of the total.The average rate is 20 %,the lowest average in this experiment,though the seed
that germinated the most belonged to this group.
Our hypothesis was correct.Seeds that were watered with eight percent hydrogen peroxide had the
most success rate.
9
Evaluation:
In my opinion,our experiment is one of the most successful experiments in the classroom. We
managed to bring all the materials which is a good start.We were well organized and didn’t fight
once during the experiment. During the process,we measured hydrogen peroxide to the nearest
millimeter to have precise data even if it took some time.Surprisingly,our group really put alot
of effort in this science lab.Instead of putting the paper tissues in the petri dishes like the other
groups, we cut 30 circles :2 pieces for each petri dish which shows that our work is not poorly
done.Nevertheless,it took us a lot of time.
We had several issues to deal with.The seeds weren’t available so we had to take seeds from the
classroom.In addition, the timing of our experiment was shortened for some reasons which let us
with less time to conduct our experiments,which affected our lab results.
Sources of Human Error:
There may have been sources of human errors.One of the errors may have been the amount of light
that was projected towards the seeds which may have affected the steps of photosynthesis of the seed.
In photosynthesis,the seeds absorbs Co2 and releases Oxygen as a byproduct.The oxygen
couldn’t “flow” as it was trapped in the petri dishes,resulting in no CO2 at a moment and stopped the
cycle.
The temperature may have affected the germination of the seeds.These days, the temperature
constantly changed day and night,maybe slowing the process