Photosynthesis Lab
Purpose: effect of intensity and wavelength and light on photosynthesis(measured by the amount of starch production)
Hypothesis: I think the the uncovered leaves will be less photosynthesized that the covered leaves, because the covered leaves are getting different light rays that are being absorbed into it. The covered black leaves will get absolutley no sunlight be cause it will be reflecting all of the rays. The cellophane will be bearly getting any sunlight because i will be reflecting some of the rays.
materials:
1. 5 test tubes
2. 400-ML beaker
3. treezers
4. scissors
5. 5 petri dishes
6. blue cellaphane
7. dropper
8. tape (scotch and masking)
9. black wax pencil
10. black paper
11. spactula
12. paper towels
13. water
14. iodine solution
15. coleus plant-green
16. coleus plant-(wizzard mix)red
17. Hot E+OH
Procedure:
1. Cover Three leaves or more with black paper, and another three or more leaves with blue Cellophane.(You may use other colors of cellophane.) Then allow that to sit for 24 hours.
2. After the 24 hours remove the coverings on the leaves, and start to remove the leaves from the plant. Then in different test tubes separate the leaves from different plants, color, and ones that were uncovered. Now take them to your teacher where she will use hot Ethanol to remove the chlorophyll. Then rinse the leaves, and then test for starch by using iodine in separate petri dishes. Finally record results in a table.
Data Analysis:
leaf type number value observations
1.green coleus 7/10 brown with red parts
red<green
2.red coleus 6/10 red and brow at the same time
red<green
3.black covered 4/10 green and brown parts,
less photosynthesis, mostly neg
4.blue cellophane 51/2 /10 green and brown parts,
weak positive
5.uncovered 81/2 /10 dark brown mostly positive
reflection: i thought that this was a pretty cool lab, we got to experiment with photosynthesis and got to see how it worked and how well it worked depending on the different types of manipulating things we put on the leaves of the plants. I thought our group worked very well together, our group was Logan, Gabby, Rosalie, and I. We had our ups and downs, but the project turned out well and we learned a ton of facts about plants.
Hypothesis: I think the the uncovered leaves will be less photosynthesized that the covered leaves, because the covered leaves are getting different light rays that are being absorbed into it. The covered black leaves will get absolutley no sunlight be cause it will be reflecting all of the rays. The cellophane will be bearly getting any sunlight because i will be reflecting some of the rays.
materials:
1. 5 test tubes
2. 400-ML beaker
3. treezers
4. scissors
5. 5 petri dishes
6. blue cellaphane
7. dropper
8. tape (scotch and masking)
9. black wax pencil
10. black paper
11. spactula
12. paper towels
13. water
14. iodine solution
15. coleus plant-green
16. coleus plant-(wizzard mix)red
17. Hot E+OH
Procedure:
1. Cover Three leaves or more with black paper, and another three or more leaves with blue Cellophane.(You may use other colors of cellophane.) Then allow that to sit for 24 hours.
2. After the 24 hours remove the coverings on the leaves, and start to remove the leaves from the plant. Then in different test tubes separate the leaves from different plants, color, and ones that were uncovered. Now take them to your teacher where she will use hot Ethanol to remove the chlorophyll. Then rinse the leaves, and then test for starch by using iodine in separate petri dishes. Finally record results in a table.
Data Analysis:
leaf type number value observations
1.green coleus 7/10 brown with red parts
red<green
2.red coleus 6/10 red and brow at the same time
red<green
3.black covered 4/10 green and brown parts,
less photosynthesis, mostly neg
4.blue cellophane 51/2 /10 green and brown parts,
weak positive
5.uncovered 81/2 /10 dark brown mostly positive
reflection: i thought that this was a pretty cool lab, we got to experiment with photosynthesis and got to see how it worked and how well it worked depending on the different types of manipulating things we put on the leaves of the plants. I thought our group worked very well together, our group was Logan, Gabby, Rosalie, and I. We had our ups and downs, but the project turned out well and we learned a ton of facts about plants.