dmssmithwosspring2023 project 8
- Project reviewer
Joined 10 Mar 2023
Project by group dmssmithwosspring2023
Info
| Explore | All seeds need water, sunlight, oxygen, and a proper environment to germinate. Germination is when the seed grows into a plant because the area has the proper growing standards. Plants need these requirements because chlorophyll absorbs the sunlight and produces more energy so the plant can... |
|---|---|
| Research Question | How does the amount of water affect seed germination? |
| Predictions | If we add 8 mL of water to water the seeds, then the seeds will germinate faster because over-watering it will drown it and underwatering it make the plant die. |
| Experimental Design | Experimental Design: Independent variable: The amount of water. Dependent variable: Seed germination. Controlled variables: Light, air temp, type of seeds, amount of seeds, paper towels, source of light, water temp. Materials: 30 pea seeds, 3 petri dishes, 3 wet paper towels, growth light,... |
| Conclusion | The seeds watered with 10 mL of water germinated the fastest, but they later molded. The seeds that received 6 mL of water germinated a day later, but were able to grow and survive. Therefore, my claim is that 6 mL of water is best. We watered one petri dish with 2 mL of water, another one with... |
| About this Project |
This group was able to plan and execute the research project in a way that allowed them to gather reliable results and information. They were able to use their results along with the research to be able to draw conclusions that made sense. The group members used their time effectively to... |
Updates
Dear Mr. Hirsch,
This is the end of our project and we wanted you to know how it went. Seeds watered with 10 mL germinated the fastest but molded soon after. The seeds watered with 6 mL germinated shortly after the seeds watered with 10 mL and the 6 mL barely molded. Even though the seeds watered with 6 and 10 mL germinated quickly, the seeds watered with 2 mL never germinated. From this experiment, we learned that it is crucial to know the proper amount of water to give your seeds in this case the proper amount was 6 mL. If we could've done one thing differently we would change the amount of water used so the lowest variable would germinate. We also wanted to thank you for your time and for helping us.
- Anna Claire, Elyse, and Grace
Hi everyone,
Thank you for excellent summary, and I will respond to all of your posts with this comment. You all did a great job on this experiment, and I am glad that you mentioned adding some new volumes of water if you were to do this experiment again. I think it would have been interesting to flood the seeds (maybe 30 mL of water), just to see what the other extreme conditions would be. Seed germination is different than plant growth, and you saw that fast germination did not necessarily equal long-term plant health in flooded conditions. You all should think about the results from this experiment next time we have a wet spring, because the seeds that farmers plant in the ground could be flooded, which will affect their ability emerge from the soil and grow.
Hi Mr. Hirsch!
These data tables are describing the pea seeds growth in the quantitive way and in the qualitative way. Also as I was sending these to you, the lines in part of the data tables went away.
-Anna Claire, Elyse, and Grace
The Quantitative data over 10 days of planting the pea seeds
|
Length (mm) |
2 mL (av. root) |
2 mL (av. sprout) |
6 mL (av. root) |
6 mL (av. sprout) |
10 mL (av. root) |
10 mL (av. sprout) |
|
Day 1 |
No growth |
No growth |
No growth |
No growth |
No growth |
No growth |
|
Day 2 |
No growth |
No growth |
No growth |
No growth |
5 mm |
No growth |
|
Day 3 |
No growth |
No growth |
3.25 mm |
No growth |
4 mm |
11.5 mm |
|
Day 4-6 |
No data |
Weekend |
No data |
Weekend |
No data |
Weekend |
|
Day 7 |
No growth |
No growth |
30.1 mm |
11.6 mm |
17.4 mm |
33.2 mm |
|
Day 8 |
No growth |
No growth |
32.6 mm |
17.4 mm |
20.2 mm |
32.2 mm |
|
Day 9 |
No growth |
No growth |
28.9 mm |
17.7 mm |
40 mm |
38 mm |
|
Day 10 |
No growth |
No growth |
23.9 mm |
33.6 mm |
21.88 mm |
36 mm |
The Qualitative data over 10 days of planting the pea seeds
|
Description |
2 mL of water |
6 mL of water |
10 mL of water |
|
Day 1 |
No growth, paper towel damp |
No growth, seeds are lighter and bigger |
No growth, seeds are lighter and bigger |
|
Day 2 |
No growth, paper towel dry |
No growth, paper towel wet, same as day 1 |
One seed grew, standing water in the dish |
|
Day 3 |
No growth, paper towel slightly damp |
All seeds are lighter and larger, paper towel wet, some seeds grew |
Some shoot and root growth, standing water, seeds are large and light in color |
|
Day 4-6 |
No data |
Weekend |
|
|
Day 7 |
No growth, paper towel is dry |
All seeds have sprouted, paper towel is wet |
One seed is moldy, paper towel is soaked, two seeds lost their seed coat |
|
Day 8 |
No growth, paper towel is dry |
Seeds have leaves, paper towel wet, small roots growing off the main one |
Paper towel is soaked, some have leaves |
|
Day 9 |
No growth, paper towel damp, seeds are wrinkled |
Paper towel is wet, all seeds have leaves, one seed has mold |
Paper towel is soaked, moldy seeds, tips of roots are moldy |
|
Day 10 |
No growth, mold on paper towel |
Paper towel is wet, one seed is moldy, all of have leaves and roots |
Multiple seeds are moldy, paper towel soaked |
Hi Mr. Hirsch,
Yes, we are measuring the length of both the roots and sprouts for our data. We finished collecting data for our experiment and are presenting our results today. We will update the conclusion section next week.
-Grace, Elyse, and Anna Claire
Hi Mr. Hirsch,
Today is our last day for observations and I am taking the seeds home. We will upload a final picture. After collecting our final data, we think our claim will be the 6 mL water treatment germinated the seeds the best.
-Grace, Elyse, and Anna Claire
Hi team! That sounds great. Are you measuring the seeds to see the length of the roots and shoots to confirm your observations? It looks like germination (with is either yes or no) is the same between the 6 and 10 mL, but it would be interesting to look into growth as well. Good luck!
Hi Mr. Hirsch,
Today is our last day for observations and I am taking the seeds home. We will upload a final picture. After collecting our final data, we think our claim will be the 6 mL water treatment germinated the seeds the best.
-Grace, Elyse, and Anna Claire
Hi Mr. Hirsch,
The seeds are growing rapidly. Some are getting tangled in the 10 mL petri dish because they are so long, but we are able to free the seeds without harming them. We are recording all of the data in a table and making sure to include all of the qualitative and quantitative observations. If we could do this experiment again, we would change the lowest amount of water to three or four milliliters so we can see some growth.
-Grace, Elyse, and Anna Claire
Great to hear, and I agree that 2 mL seems too low (although it is good to have a too-low control). I would also like to learn how much water is too much, so perhaps 15 or 20 mL on the upper side.
Hi Mr. Hirsch,
We think that 10 mL is too much water because the paper towel is getting moldy and we had to throw out two seeds because the seeds were covered completely in mold. The tips on some of the roots have mold as well. We are surprised to see mold because the seeds germinated faster than the 6 mL of water petri dish. The 10 mL of water seeds were doing well, but started to grow slower than the 6 mL of water ones.
We are measuring them without taking them out of the petri dish for most of them, but some we pick up by the seed so we don't damage the sprout or root. They are in a dark area, so we think, since they have leaves, that they are going to wither and not be as strong. They don't have enough light for photosynthesis, and that may harm them.
-Grace, Elyse, and Anna Claire
Hi Grace and team,
Great observations. Be sure to record all of your observations (like how some of the seeds started rotting and you removed them), because those are important things to consider when you all report on your data. Based on what you are observing right now, if you had to do this experiment again, what would you change so you can see the impact of the volume of water? 10 mL is apparently too much, so could you try other volumes?
This is what the seeds look like today.
You all are going to want to start thinking about how to best measure your plants. Since the roots and shoots are pretty delicate, should think about how to get your measurements without totally destroying your plants.
Hi Mr. Hirsch,
All of our seeds grew from the 6 mL of water and 10 mL petri dish. Still no growth from the seeds in the 2 mL of water petri dish. Most seeds that grew have both the root and the sprout. The ones with the sprout have leaves. We did not water them over the weekend, so that could change our results. Mold is visible on the paper towel and one seed in the 10 mL petri dish, and two seed coats have fallen off in the dish.
-Grace, Elyse, and Anna Claire
Great results everyone! It is interesting to see that the low water seeds are not germinating, but the other two are. I wonder how much water is too much water? Are you surprised to see the mold contamination? How do you interpret that observation?
These are the seeds on Thursday of last week.
Hi Mr. Hirsch,
One of our seeds from the petri dish that receives 10 mL of water grew. The sprout is 5 mm in length. The seed that grew is lighter in color since we first watered them and is bigger. We think that more seeds are going to germinate tomorrow because they look similar to the seed that sprouted in terms of color and size.
-Grace, Elyse, and Anna Claire
Hi all. Looking good! When dried seeds are exposed to water, the first thing they do is absorb the water (we call this imbibing), which give the seed enough water to start the process of germination. Several of the other seeds look like they are ready to germinate too! Keep me updated and great observations.
I accidentally posted the same picture.
Okay, looking good! Let me know how it goes!