Conversations - use this space to communicate about this project
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November 20, 2008 | 12:19 AM |
hayleyleigh9
(Team Member)
Today we completed our project. Our results showed that our hypothesis was untrue, it was surprising to me that the plants grew better in the green bottle, but I didn't think about the plants absorbing more green light....so now I know why the plants were leaning. |
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November 18, 2008 | 12:12 AM |
nikole169
(Team Member)
we watered our plants with 50mL and the plants are continuing to grow. The mold doesn't seem to be growing so we'll leave it alone. We think the plant leans in the green bottle because the green is reflecting the green light and its absorbing all the other colors. |
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November 12, 2008 | 5:34 AM |
Mr. Rob Baker
(Scientist/Mentor)
Mold.... Mold isn't great, but hopefully there isn't enough to really effect the plant growth. You could try spraying your plants with a dilute vinegar solution to kill the mold (but spray in both bottles so that you know any differences in growth are not caused by the vinegar). It's interesting that the green bottle plant is leaning more than the clear-bottle plant. Why do you think that is? If you aren't interested in how much the plants are leaning, you can rotate the bottles so that they continue to grow straight. |
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November 12, 2008 | 12:17 AM |
ICEMAN4
(Team Member)
JOURNAL ENTRY In the clear bottle mold has started to grow. We watered it with 50mL....In both bottles the plants are leaning toward the sun, but it is more noticeable in the green bottle. |
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November 10, 2008 | 3:51 AM |
Mr. Rob Baker
(Scientist/Mentor)
Re: They Grew! That's really exciting! Its also very interesting that more of the green-bottle seeds sprouted than the clear bottle seeds. Seed germination is often largely determined (in addition to water and temperature) by the ration of red:far red light. It could be that the green bottle is filtering out some of the far-red light and increasing germination rate. |
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November 10, 2008 | 12:14 AM |
nikole169
(Team Member)
they grew!!! In the clear bottle 2 red clover seeds started to grow over the weekend...In the green bottle 20 red clover seeds started to grow. They seem to have water in them still so we will give them 30 mL of water. |
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November 7, 2008 | 12:36 AM |
nikole169
(Team Member)
hey We just started our experiment we used red clover seeds, some in the clear bottle some in the green bottle...Now we are just goin to see what exciting discoveries we have to look forward to. We will try to post the plants growth and the rate of photosynthesis at least three times a week |
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November 7, 2008 | 12:31 AM |
nikole169
(Team Member)
hey |
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November 6, 2008 | 6:19 AM |
Mr. Rob Baker
(Scientist/Mentor)
Suggestion for your experimental design... The coke bottles seem like a really great system for growing plants in. I'm not sure how quickly your plants will respond to new light stimulus - will you be able to take your measurements without removing the lids (can you stick the syringe in through a small hole)? I would also encourage you to take more measurements than just photosynthesis. I think plant height and number of leaves would be easy to measure, and potentially very interesting in addition to photosynthetic rate. I'd like to hear more about why you think plants under green light will have a slower rate of photosynthesis than those under clear light (and why you chose green rather than another color). I also found this neat website that lets you place with color filters and thought you might enjoy it: http://micro.magnet.fsu.edu/primer/java/primarycolors/colorfilters/index.html |
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November 6, 2008 | 12:25 AM |
ICEMAN4
(Team Member)
Hi, We are making some slight changes to our experiment. |
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November 4, 2008 | 2:35 AM |
Mr. Rob Baker
(Scientist/Mentor)
Hello! Hi guys! I'm Rob Baker, your Planting Science mentor. Right now I'm working on a PhD in plant biology at the University of Colorado, Boulder. I'm working on plant branching, looking at the developmental morphology, anatomy, and molecular genetics of how plants grow branches. It looks like you already have some ideas about what you're going to investigate, and I'm interested to hear how you plan on testing your question about light and and photosynthesis. I'm also interested to hear your thoughts on what you think you'll find and why. -Rob |
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November 3, 2008 | 4:31 AM |
Heather
Welcome to Planting Science! I help organize PlantingScience. I am pleased to welcome your team to this science community. Let me introduce you to your scientist mentor for the project, Rob Baker from the University of Colorado. He'll post a hello to you here soon. Then he'll be giving your team feedback as you plan and carry out your research. You can also ask him a bit about what his life is like as a scientist. The beginning of a project is often the hardest part. Don't hesitate to ask questions or share your brainstorming ideas. Creative team name! Have fun! Best wishes as you start this scientific journey, Heather Cacanindin |
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