Flower Project
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PRESENTATION OUTLINE
QUESTION
How will cutting off some of the stems on the flowers affect their freshness?
Photo by Veronique Debord
If cutting cutting of the stems on the flowers help the flowers drink, then the flowers will last longer because they will be able to make food easier, elongating the flowers lifespan.
Photo by Nathan Dumlao
CONTROLLED VARIABLES
- Recording time
- Type of flowers
- Amount of water given to flowers
- Positioning of the flowers
- Temperature
- Vases
- The ruler used
Photo by Emile Séguin 🇨🇦
Procedure:
1. Purchase 6 roses of the same batch.
2. Cut the stems to 25.4 cm each.
3. Place 3 roses into one glass vase, and another three into a similar vase.
4. Fill the vases with 450ml of water each.
5. Place vases in the same place, where sunlight can come through .
6. Every other day, cut 2.54 cm off the stems of 3 roses in the experimental group.
7. Record data at 6:30 PM every day, including:
8. Measure the diameter of each flower in each vase in cm.
9. Count the amount of petals each flower has/ loses .
10. Average numerical data out and place in data tables
11. Look at the color of the flower petals/buds such as changes in lightness or darkness of color, spots on the flowers, and change in color (from white to brown).
12. Look at and describe how the flowers droop and what they look like.
13. Take pictures.
Photo by Tobias van Schneider
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This is my graph measuring the distance from the outermost petal on one side to the other in cm. The averages of the three flowers per group are shown, and there is very little difference between the flowers with cut stems, and uncut stems.
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This graph shows the petals that fell off of the flowers over the 7 day period they were tested in. As you can see, there is no difference at all between the control and experimental groups.
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The next few slides will show the pictures of the flowers over the 7-day testing period.
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The first day, the flowers had straight stems and bright white petals with no other colorization.
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On day 2, the flowers still had straight stems, but gained a slight brown tint towards the center of the buds.
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On day 3, the flowers began to bend at the top of the stems and grew another shade darker of brown. The flowers also gained black vain-like features amongst the petals,
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On day 4, the flowers had about a 90º bend at the tops of the stems and the flower petals were drooping very far. There was no real change in coloration.
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Day 5 had very similar observations to day 4.
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I accidentally knocked off some of the petals of the flowers when measuring on day 6, but some fell on their own accord until day 7. The petals grew darker brown with the stems drooping even more past a 90º bend. Observations on both Day 6 and 7 are very similar.
ANALYSIS
I observed many changes in the flowers, most notably the color shifting from an iridescent white to a white-brown mixture, the stems going from being straight to bending past a 90º angle and the flower petals drooping towards the ground, making the diameter of the petals smaller by the day. Petals eventually fell off on day seven without provocation by me, unlike the petals on day 6.
Photo by SkintDad.co.uk
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The hypothesis was that cutting 2.54cm off of the stems of 3 flowers every other day would make them fresher because they would take in more water and produce more food because they are newer cells. The data did not support the hypothesis because there was little to no variance between the experimental and control groups in any of the categories measured. In order to improve this experiment, the conductor should take more care when measuring the flowers, increase the sample size, and increase the amount of times the stems of the flowers are cut in the experimental group. How would making these changes affect the outcome of the experiment? What different results would yield because of the changes?
Photo by Mr.Tea
