Question

Plants are set up in a greenhouse. 1/3 of potted plants are grown under red light, 1/3 under green light, and 1/3 under natural light. plant biomass is measured at the beginning of the experiment and after a 28 day period. in this study, is the type of light an independent or dependent variable?

Answer 1

the type of light is an independent variable. The plant biomass is the dependant variable which depends of the type of light given.

Answer 2

Independent variable.

Explanation:

In order to be able to recognize the dependent and independent variables you just have to read the problem and see which one depends on the other, in this case the light is the independent variable because depending on which light is installed the biomass would grow differently, not the other way around. So since the biomass depends on which light is installed, the light is independent.