Pac-metophytes

Project by group chsparfittspring2018

Info

Explore Work on this next!
What do we know about plants from our experiences outside of school? What have we discovered in class and background research? What questions about plants interest us?
Research Question Will the added nutrients from the compost accelerate the germination of the sporophytes?
Predictions Adding compost tea will accelerate the germination and growth of the spores.
Experimental Design What is our plan? Be sure to include enough detail that another group can replicate our experiment. What variables will we test? What variables will we measure and observe? What variables will we keep constant? How will we record our data?
Conclusion What claim can we make from our experiment? What are possible explanations for our results? How do the data we collected and our reasoning with scientific ideas support our claim? What future experiments could be done to expand on the results of this experiment?
Investigation Themes
Class Level

Updates

Get to know your team’s scientist mentor, who will encourage and guide you through the scientific process of discovery. The more you share your ideas and research info, the more your mentor can help. You may also hear from a scientist mentor liaison who will be helping all the teams in your class.
PlantingScience Staff
has been updated by administrator
Laura Klein
said

Dear teachers, mentors, and student scientists,

Thank you all so much for the time and dedication you have devoted to these projects over the last few weeks. Ms. Parfitt and Ryan are truly dedicated educators, bringing science and enthusiasm to the classroom. The scientist mentors have done an excellent job being adaptive, interacting with their groups, and helping to do good scientists. And finally, the students have done a great job asking questions, collecting data, and taking care of their ferns! Great job everyone, I hope that this experience has taught you that plants [ferns] are some of the most interesting organisms in biology.

All the best,

Laura, scientist liaison  

Andrew
uploaded ppt planting sciennce.txt in project files
Evan
updated the project info
Andrew
said

Today we saw more growth from the spores and all of them are able to be seen now. However today we may have had the experiment compromised because pathogens may have made it into the Petri dishes. We are now taking extra precautions with masks to prevent a future outbreak

    Chelsea Pretz
    said

    That's great things are starting to grow! Are you taking notes on how many, and the size of them? 

Andrew
said

Also a question, what types of single-celled organisms are able to withstand being boiled?

    Chelsea Pretz
    said

    Protist can, and depending on the heat some bacterial! 

Andrew
said

Today we saw a lot of growth from the ferns. We can now determine if they hermaphrodites or males. We saw little organisms from the compost tea so we are going to boil it again because we thought the sperm had been released already. All in all growth seems to have been affected by the tea.

Dakota
said

Today, we have looked at our plants for germination. all of our plants have germinated but some faster than others, the ones with the compost tea added had more and larger germination happening. 3/4 full of compost tea had the longest "tail" out of all of the experiments.  All of this evidence helps support our hypothesis.

    Hailey Jane Ryan
    said

    Hi Dakota!

    Be sure to specify what 3/4 full means! What are your specific units?

Evan
said

Today we are beginning our experiment. We have brought in Sam's compost and now we are boiling and straining it to make a "tea". This is so we can kill any fungi that will prevent molding. We predict the compost will accelerate germination because of the added nutrients such as Phosphorus.

    Chelsea Pretz
    said

    So do think phophsorus will be the limiting nutrient for ferns to grow?  Are you able to measure or get an estimate of how much phophsorus will be this compost "tea"? If not, you will not be able to make that direct connection. You will be able to make the conclusion that there is a different (or not) with compost tea is used in germination. What are some other nutrients that might be in this compost tea?

    I'm glad to hear you are off to a good start!

Dakota
said

what are agar plates? By the way, I will be answering for Sam today. Inside the compost there's a lot of Nitrogen and CO2, which would change the nitrogen levels in the soil. Instead of doing this, our question is by adding compost will it effect the fertility levels in the soil and effect the germination process.

    Chelsea Pretz
    said

    Agar plates are a solid growth medium. Sometimes they might have different nutrients to help grow different organisms. You might want to think about adding different levels of nitrogen in your agar plates to see if different plants to see the effect of growth or gametophyte type (male/hermaphrodite) and do the same for CO2. You should also make sure to be including a control in this experiment with no add nutrients. Do you know how other plants live with the lack of nitrogen? Bean plants (fabaceae) have root nodules that will host bacteria to fix nitrogen from the plant, and carnivorous plant will capture insects to get extra nitrogen.  

Andrew
said

By the way, we will be heading into spring break this next week so we will all be off for a week.

Andrew
said

By the way, we will be heading into spring break this next week so we will all be off for a week.

Evan
said

we will be going on spring break as of the 30th and back on the 9th

Andrew
updated the project info
Laura Klein
joined the project
Sam
said

Will the compost change the results of the sporophyte's growth because of the added CO2? 

    Chelsea Pretz
    said

    What is different about the compost? Why do you think that would change the CO2? Will you still grow some on agar plates? 

Evan
replaced project picture
Kim Allyn Parfitt
said

Team,

Nice problem solving to deal with unreliable computers.  I wonder if you've developed some testable questions for the experiment? Remember to view the Cfern lifecycle.

joined the project
PlantingScience Staff
said

Hi team!

We've added another teacher to this team as an observer, so you may see her log in, but please do not be alarmed! Sometimes teachers are interested in participating in joining PlantingScience, but they don't know how it works. This is one way we can show them, so we appreciate your professionalism in your posts!

PlantingScience Staff
joined the project
Hailey Jane Ryan
joined the project
Sam
said

Andrew and Evan are both having technical difficulties, Evan forgot his password and Andrew's computer is frozen.

Andrew
said

Hello, I am here to inform you Ms. Pretz that the class has indeed gone over how organisms transfer from haploid to diploid. Fertilization changes ploidy by antheridium (sperm) delivers DNA  to the archegonium (eggs) and this results in the hapoid "offspring" becoming diploid. Also, humans are haploid when they are just the 2 sex cells or in other words, when they aren't humans. 

Sam
said

Hey Chelsea I'm replying for Kota and myself because at the moment she doesn't have a computer. It's Kota now, I am haploid because I need to reproduce sexually to have offspring of my own. It's Sam now, a human haploid cell is just a gamete that hasn't been fertilized. I don't know about fish yet, if you could explain that would be great.