Question

a student designed an experiment to determine if air temperature had an effect on the rate of photosynthesis in corn plants. the independent variable in this experiment is the

a. air temperature at which the corn plants were grown.
b. volume of oxygen produced by the corn plants.
c. amount of carbon dioxide used by the corn plants.
d. number of corn plants used.

Explanation:

In an experiment, the independent variable is the factor that is deliberately changed to see its effect on another variable. Here, the student wants to see the effect of air - temperature on the rate of photosynthesis. So, air temperature is the variable being manipulated.

Answer:

A. air temperature at which the corn plants were grown