https://padlet.com/jmohn/oicwuedsrw9z Group 3 - Water Color en-us 2016-10-15 20:59:49 UTC 2023-02-20 19:06:55 UTC hello@padlet.com http://d20uo2axdbh83k.cloudfront.net/20141020/47034972b1207c3982eed5f412f5322b.gif jmohn https://padlet.com/jmohn/oicwuedsrw9z/wish/130936902 The data indicates that while red and blue colored water maintained nearly the same rate of photosynthesis, the green water was significantly slower. The red, blue and no color water all had a rate of 0.0007 in comparison to the green water, which underwent a rate of 0.0005. The rate of photosynthesis was measured through 1/ET(50), or the inverse of the seconds it took for half of the leaf chads to rise to the surface of the water. ]]> 2016-10-15 20:59:49 UTC https://padlet.com/jmohn/oicwuedsrw9z/wish/130936902 jmohn https://padlet.com/jmohn/oicwuedsrw9z/wish/130936903 In order to undergo photosynthesis, leaves require carbon dioxide and light. Once they are filled with enough air through production of oxygen, the leaf chads rise to the top. The green water provided the least amount of light absorption, considering the leaves took longer to undergo photosynthesis as compared to our control group, red water and blue water. Our hypothesis was not completely correct, as not all colored water experienced a decrease in rate of photosynthesis, just green.

This experiment allows us to grasp an understanding of all of the factors that go into photosynthetic rate. It is important to note that green color is reflected by chlorophyll and also by the water in the green colored water, meaning all green light was reflected, providing a lower amount of energy. Greener areas of water may have plants closer to the surface, as color of green water does have an impact on photosynthesis, as this observation indicates. 

There were several errors that may have influenced the outcome of this experiment. Firstly, there was a slightly higher amount of water in the red water cup, which could have been prevented by exact measuring in mL. Additionally, the leaf chads were placed in their respective water one by one, instead of all at once, meaning the ones placed first may have gotten a head start of 1-2 minutes. Finally, there was only one trial for each group due to time restraints. In order to confirm our findings, it would be beneficial to repeat this experiment a few more times.]]> 2016-10-15 20:59:49 UTC https://padlet.com/jmohn/oicwuedsrw9z/wish/130936903 jmohn https://padlet.com/jmohn/oicwuedsrw9z/wish/130936904

Prepare 300mL of 0.2% bicarbonate solution for each experiment. 

Pour the bicarbonate solution into 4 clear plastic cups to a depth of about 3 cm. Label the cups RED, BLUE, GREEN and NONE.

Using a pipette, add one drop of dilute soap solution into all the cups. In addition, add two drops of food coloring (red, blue, green) into each of the 3 color cups. Leave the NONE cup without food coloring, but add 2 drops of water as a control.

Using a hole punch, cut 6 leaf chads for each cup, 24 total. 

Draw gases out of spongy mesophyll tissue and infiltrate the leaves with the sodium bicarbonate solution.

Pour the disks and the solution from the solution into the appropriate clear plastic cup.

Place the cups underneath the lamp and start the timer. After each minute, record the number of floating disks until all the half of the disks are floating to compare results.

Record results.

]]> 2016-10-15 20:59:49 UTC https://padlet.com/jmohn/oicwuedsrw9z/wish/130936904 jmohn https://padlet.com/jmohn/oicwuedsrw9z/wish/130936905 How does water color affect the rate of photosynthesis in baby spinach leaf chads?]]> 2016-10-15 20:59:49 UTC https://padlet.com/jmohn/oicwuedsrw9z/wish/130936905 jmohn https://padlet.com/jmohn/oicwuedsrw9z/wish/130936906 Changing the water color will negatively affect the rate of photosynthesis.]]> 2016-10-15 20:59:49 UTC https://padlet.com/jmohn/oicwuedsrw9z/wish/130936906 jmohn https://padlet.com/jmohn/oicwuedsrw9z/wish/131551117 Names: Gwen Liu, Kanishka Mehra, Cooper Bredehoeft ]]> 2016-10-18 16:47:18 UTC https://padlet.com/jmohn/oicwuedsrw9z/wish/131551117 https://padlet.com/jmohn/oicwuedsrw9z/wish/132431746 If changing the water color will negatively affect the rate of photosynthesis, then the amount of time it takes for the colored leaf chads to rise will increase.]]> 2016-10-21 18:23:51 UTC https://padlet.com/jmohn/oicwuedsrw9z/wish/132431746 https://padlet.com/jmohn/oicwuedsrw9z/wish/132438172 2016-10-21 18:46:50 UTC https://padlet.com/jmohn/oicwuedsrw9z/wish/132438172