(Solved): ~~13. Multiple Choice: Based on the data presented in the table, which two containers could be correctly used to compare the rate of photosynthesis at two different light sources? ...
**INFORMATION NEEDED TO
COMPLETE THE FOLLOWING PROBLEMS**
Independent Variable: This is the cause.
Dependent Variable: This is the response or effect.
One
hundred samples of several different plants were placed in each of six sealed
containers with water in them. At the end of two days the amount of oxygen
produced was measured. Results are shown in the table below.
|
Container |
Plant |
Height
of Plant |
Light
Intensity |
Source
of Light |
Distance
from Light |
mL
O2
Produced |
|
1 |
Iris |
4" |
High |
Artificial |
6" |
16 |
|
2 |
Iris |
4" |
High |
Natural |
6" |
13 |
|
3 |
Iris |
6" |
Low |
Artificial |
5" |
12 |
|
4 |
Carnation |
6" |
High |
Natural |
4" |
13 |
|
5 |
Carnation |
6" |
Low |
Natural |
4" |
9 |
|
6 |
Carnation |
4" |
Low |
Artificial |
5" |
14 |
Expert Answer
a. 1 and 2
Container 1 and 2 can be used to compare the rate of photosynthesis at two different light sources because all the other factors are constant. In other words, they both contain iris, the plant height is 4 inches for both containers, and they are both 6 inches away from the light.
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