Photosynthesis Rate Results
Ms. Albu
E Block
Results - The effect of leaf type on rate of
by Louise, Brandon, and
leaf disk floats (Spinach vs. Asian
Pear)
Rachel
Hypothesis: If oxygen is removed
from the discs of spinach leaves and
asian pear leaves, then the spinach
discs will photosynthesize at a faster
rate than the asian pear discs will.
Summary: According to the data, the
rate of photosynthesis in floats per
minute for spinach leaves is generally
faster than the rate of photosynthesis
for asian pear leaves, which proves
our hypothesis correct. The discs float
as they produce more oxygen from
photosynthesis, which makes them
more buoyant. The faster the rate of
photosynthesis, the faster the leaves
will produce oxygen and float.
Conclusion
Zoe Cole, Amanda Johnson, Sarah Boughan,
Vanessa Palermo
Since the spinach
disks floated to the
surface faster than
the rhododendron
disks, that means the
spinach produced
more oxygen in the
given time, thus the
spinach has a higher
photosynthetic rate.
Apple Leaves
Photosynthetic Rate = Number of Floating Chads/ # of Minutes
Apple Leaves = 9 Chads / 7 minutes = 1.29 Chads / Minute
Spinach Leaves = 15 Chads / 3 minutes = 5.00 Chads / minute
Abby Edison, Leah Calitri,
Bridget Gomes, Caileigh Burke
Time
(min)
Contro
l
(Spina
ch)
Experime
ntal
(Arugula)
0
1
5
1
1
6
2
3
6
3
11
8
4
14
9
5
15
10
6
Rate of Spinach vs.
Arugula
11
7
11
8
11
We found that the spinach produced oxygen faster than the arugula. This results
in the spinach “chads” rising to the top at a faster rate than the arugula. The
spinach rose at a rate of .6 floats/min and the arugula rose at a rate of 2.8
floats/min. The spinach leaves are a darker green and therefore have a higher
photosynthetic rate.
Spinach Leaf
Photosynthetic Rate Lab
Ankit Thakur and David Ellis
Time
(min)
Number
of
Spinach
Floats
Number
of Black
Cherry
Floats
0
0
0
1
0
0
2
4
3
3
11
7
4
20
11
Black Cherry Leaf
All About that Basil, no
Spinach
By: Abby Mills, Claire Shea, Madhu Kaushik and
Rebecca Arnold
Time
0
1
2
3
4
5
6
7
8
9
10
mi min min min mi min min min min min min
n
n
Spin 0
0
0
ach 0.00 0.00 0.00%
%
(disk %
*Basil is out of
basil leaves undergo
s) disks- data The
four
a higher speed of
0
3
5
12
16
17
18
19
0.00%
15.79
%
26.32
%
63.16
%
84.21
%
89.47
%
94.74
%
100.00
%
-
-
-
-
-
-
-
-
in proportion to
twenty disks
photosynthesis than the
spinach leaves. This is
because the basil disks
began to float 3 minutes
Control Group:
before the spinach disks.
Spinach Disks 0.00
100.00
Also all25.00
of the basil
disks
Experimental Group:
%
%
floated 8 %
minutes before
Basil Disks
all the spinach disks.
Basil
*
(disk
s)
0
5
20