Conversations - use this space to communicate about this project
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April 6, 2009 | 12:39 AM |
PS team
Good bye Thank you to everyone who participated in this inquiry. We hope you are going away with some new insights about how science works, and confidence that you can take on new scientific challenges. There are a lot of fascinating research questions---just waiting for young investigators to join in the fun. Best wishes for the remainder of your school year! Jennifer |
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March 30, 2009 | 11:19 PM |
44651
(Student, The Beans - WSHS_S09_W13 · -1)
Why did you use those certain plants. |
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March 30, 2009 | 9:38 PM |
Dr. Beverly J. Brown
(Scientist/Mentor)
Mystery bug identified! Great detail in your answer - that's the kind of information that would allow another scientist to repeat your experiment and verify your results. My colleague, the entomologist, says that he thinks you have a springtail, Order Collembola. These actually hop around using their tail as, you guessed it, a spring. :) I understand that you will be doing one more experiment with pollinators later on this year, so maybe things will make more sense then. I hope!!! Dr. B. |
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March 30, 2009 | 12:52 AM |
Danielle7
(Team Member)
Ta Ta for Now. We measured consistantly. For example, we took four pollen grains from each flower and put them on the slide. We then measured the diameter of the pollen. Our field of view was 10X power. We used a metric ruler. The millimeters wide of the field of view was its widest at 2. There is 2,000 microns in the field of view. We counted the number of pollen grains that cross the diameter of the field of view. We divided that pollen by 2,000 and found the diameter of each pollen. We measured in centimeters. This experiment could have been more fun if we had some more knowledge on flowers. Yes, it's good to ask questions but we felt like we had no clue what was going on. And.... we still kinda don't. |
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March 29, 2009 | 9:55 PM |
Dr. Beverly J. Brown
(Scientist/Mentor)
Your great question - It sounds to me that you have finished your experiment. I'm sorry it wasn't quite as much fun as you thought it would be. I'm very excited about your question and what you have found. I have a few more questions, too (of course!). How did you come up with the sizes for the pollen? How many pollen grains did you measure? Did you average the measurements? What are the units? I think Ranonculus - if you mean buttercup, should be spelled Ranunculus. I think your graph would be more accurate as a bar graph. Line graphs are used for a series of related data points. For instance, if you measured how long a growing pollen tube was every 15 minutes. What would have made this experiment more fun? Thanks and happy science explorations to you! Dr. B. |
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March 27, 2009 | 1:09 AM |
Kendra13
(Team Member)
Today we filled out our research information and finished our last graph. This experiment wasn't as fun as we wanted it to be. But thanks for working with us. =] |
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March 26, 2009 | 1:14 AM |
Robby12
(Team Member)
Yes it makes sense. If we were a big flower we would need big pollen because the little pollen might not be enough to pollinate the bigger flowers. Today we collected more data and created data tables and graphs. We uploaded them on our data files. |
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March 25, 2009 | 9:30 AM |
Dr. Beverly J. Brown
(Scientist/Mentor)
Hi Goggles! Great first step! How about thinking like a plant. If you were a plant, with big flowers, why would you need to have big pollen? Why wouldn't small pollen be OK if all you are doing is carrying male gametes? This is just a thought question, not one you would test, but it might help you think a little about what you might expect to find in your data collection. Does the question I'm asking make sense to you? If not, I'll try again! Dr. B. |
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March 25, 2009 | 1:06 AM |
Kendra13
(Team Member)
Confusion :] Wouldn't we have to perform a lot more tests to figure that out? We're just going to make a hypothesis of why pollen would be different sizes. If the big plant has big pollen then it will spread more pollen. ??? In todays work we measured pollen of the small and big flowers. What we found is that the smaller flower had smaller pollen size than the big flower. We still have some more measuring to do to have more accurate results. |
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March 24, 2009 | 10:51 PM |
Dr. Beverly J. Brown
(Scientist/Mentor)
Another question OK, if that is true, why would pollen be different sizes? Why wouldn't all plants just make lots of really tiny pollen so they could make the most possible? Dr. B. |
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March 24, 2009 | 12:50 AM |
Rosalynda15
(Team Member)
Pollens role in reproduction is it pollinates the flower to make more. Its not the size that matters its the amount of pollen that is produced. |
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March 20, 2009 | 6:02 AM |
Dr. Beverly J. Brown
(Scientist/Mentor)
pollen size versus flower size So, if I understand correctly, you are asking if the size of the flower is correlated (fancy word!) with pollen size. Great question! Why do you think that might be the case? What is pollen's role in reproduction and why would size matter? If you have answers to those questions, you can design a much stronger experiment. Looking forward to hearing from you! Dr. B. |
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March 20, 2009 | 1:00 AM |
Robby12
(Team Member)
we worked on a dichotomous key today, and we finished up our worksheets. monday we are going to start our assignment. |
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March 19, 2009 | 12:55 AM |
Kendra13
(Team Member)
We have a question for you! What do you think would be best for us to do an experiment on? We were thinking to see if you have a big flower, the pollen is also big verses a smaller flower the pollen would be small. Some species of pollen we found were polyplicate and visiculate. |
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March 17, 2009 | 1:41 PM |
Dr. Beverly J. Brown
(Scientist/Mentor)
Keep up the good work - Hi Rosalynda, It's so nice to hear from you! How many different kinds of pollen did you find? Can you identify the species? I'm very curious to know what you are finding! Dr. B. |
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March 13, 2009 | 1:14 AM |
Rosalynda15
(Team Member)
HI Dr. B well its just me today Rosalynda so im just been working on the pollen lab that we tested outside and also working on how low or high pollen is and different types of pollen its not so bad as i thought it was going to be. well til next time Rosalynda |
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March 12, 2009 | 12:56 AM |
Robby12
(Team Member)
we'er still workin on our pollen lab... |
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March 10, 2009 | 11:21 AM |
Dr. Beverly J. Brown
(Scientist/Mentor)
Pollen fun Hi Goggles, Hi Robb, I'm an Eagles fan and so is my husband. He lived in Philadelphia for a while and he infected me with Eagle football. Since I live near Buffalo I was interested to see that the infamous T.O. will be there this year. I wonder what kind of trouble he'll cause there... Bi-polar is a great way to describe spring in Rochester, too. Yesterday we had 40 degrees and clear, then sleet, then light rain and colder, then heavy rain. Sheesh. Sounds like a good day in science class! Did you try to germinate any of the pollen? I'm looking forward to hearing about your next activity! Dr. B. |
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March 10, 2009 | 1:13 AM |
Danielle7
(Team Member)
what up dr. b-rad. this is robby and we learned today about pollen. we did a lab and look at some plants under a microscope. we had a juniper b (tan) tree, a lily (flower), a Jupiter A (red) plant and some elm tree seeds. it was fun.. talk to you later. |
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March 10, 2009 | 12:56 AM |
Danielle7
(Team Member)
Hey Dr. B !!! This is Kendra and Robb. Our weather is very cold, yesterday it snowed. We think it's being a little bit bi-polar. Robb wants to know what your favorite football team is??! :] He likes the Raiders Right now we're trying to figure out where the pollen is on the elm so we can look at it. |
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March 9, 2009 | 9:20 PM |
Dr. Beverly J. Brown
(Scientist/Mentor)
Welcome! Hi Goggles! I'm Dr. Beverly Brown and I teach at a small liberal arts college in Rochester, New York. It is a grey, rainy day here, so I hope you are having better weather than we are. I'm so glad that I will be working with you for your pollen project. I study pollination - especially when there is an invading plant species that might be stealing pollinators from native plant species. Rosalynda, I appreciate your honesty! I'll be interested to know how you like this pollen investigation. Maybe it will win you over to at least tolerating science. :) I have to confess I am not much for playing sports but I do like to watch baseball, cricket, and football. I'm in a kind of withdrawal at the moment. I'm looking forward to seeing what you decide to explore and I'll be here to listen to your ideas and help out with resources. Go, Goggles! Dr. B. |
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March 9, 2009 | 1:11 AM |
Danielle7
(Team Member)
Today our group learned that the central states of the U.S. are cold during the month of march. |
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March 9, 2009 | 12:55 AM |
Robby12
(Team Member)
hi im robb. |
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March 9, 2009 | 12:54 AM |
Kendra13
(Team Member)
Hey, I'm Kendra. Aloha!! :] I play sports year round. I'm busy and it bugs me. I can't clean for anything. It's the hardest thing in the world to do for me. |
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March 9, 2009 | 12:50 AM |
Rosalynda15
(Team Member)
Hi my name is Rosalynda. I'll be honest with you i dont like science. |
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March 9, 2009 | 12:43 AM |
Danielle7
(Team Member)
Hello. I'm Danielle. I play volleyball, basketball, and softball. I'm a sophomore in high school and I love science. |
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March 6, 2009 | 4:49 AM |
PS team
Welcome to PlantingScience! I help organize PlantingScience. It is my pleasure to welcome you to this community of plant researchers and introduce your scientist mentor for the project. Dr. Beverly Brown of Nazareth College will be communicating with your team as you plan and carry out your research on pollination. She'll post a hello to you here soon. Don't hesitate to ask questions or share brainstorming ideas you might have. The beginning of a project is often the hardest part. So, exchanging ideas now with your team mates, your teacher, and your mentor can be a big help. Best wishes as you start this scientific journey. We are glad to share the fun of plant investigations with you. Jennifer Potratz and the PlantingScience Team |
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