Independent Variable: This is the cause. Dependent Variable: This is the respons
ID: 170109 • Letter: I
Question
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
Multiple Choice: Compare Containers 1 and 2. What independent variable is tested by this comparison? (5 points)
a. Kind of plant
b. Height of plant
c. Light intensity
d. Distance from light source
e. Light source
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
Explanation / Answer
comparing container 1 & 2, the light source (independent variable) is the cause of the amount of oxygen produced(dependent variable) as other parameters are same for 2 containers.