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(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

     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? Explain your answer. (5 points)

 




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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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