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Investigating: What is the best PH to have the fastest germination rate for green beans?

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Investigating: What is the best PH to have the fastest germination rate for green beans? Independent variable: The PH of the solution Dependent variable: Amount of seeds germinated for different temperatures Control Variable: Volume of the PH solution, same amount of seeds per dish Hypothesis: The best condition for ph to germinate is when it?s not too acidic and not too alkaline. Equipment list: 1. PH solution 2,4,6,7,10 2. Cotton 3. Measuring Cylinder 4. Green seeds (50) 5. 5 dishes Method: 1. Gather all the equipment 2. Cut out pieces of cotton and put them in the dish 3. Place 50 green seeds in the 5 dishes on top of the cotton so each dish has 10 seeds 4. ...read more.


Results table Seeds Germinated (/10) Seeds didn?t Germinate(/10) Dish 1 (PH2) 6 4 Dish 2 (PH4) 10 0 Dish 3 (PH6) 0 10 Dish 4 (PH7) 9 1 Dish 5 (PH10) 10 0 Analysis: Based on the results table, we can see that as the PH gradually nears to 10, the seeds tend to germinate more compared to results from PH 2. The result table also shows that Dish 2 and 3 are inversely proportional because for Dish 2, all the seeds germinated and in dish 3, all the seeds didn?t germinate. Between these two dishes is also an anomaly because basing on the results, Dish 3 should have germinated more seeds than dish 2 because the results show that the seeds germinated the most when its more alkaline than acidic. ...read more.


This means PH 7 is the PH in which germination rate is the fastest hence the reason why farmers grow seeds using water. Also, the seed needs water to activate the enzymes that controls the germination process. Absorbed water also causes the seed to swell and soften which makes it possible for the plant to break through. The reason why seeds need to swell is because seeds increase in size when they are soaked in water. The bulb inside the seed prepares to break the outer layer/shell so that it could bury in the ground. Referring back to the enzymes, they also give it enough juice to push the seed to sprout to the surface. When that happens, the other ingredients such as light energy, C02 takes over. In conclusion, the PH that has the fastest rate of germination is when the PH is 7 or near to it. ...read more.

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