A student wanted to look at germination of five different se

A student wanted to look at germination of five different seeds in vermiculite (a soil additive). He planted the seeds in identical containers and left them together in full sunlight. He gave each seed the same amount of water and charted the germination of each seed type. What is the independent variable in this experiment? amounts of water seed type vermiculite light

Solution

Answer: A. Independent variable is something that is not changed by other variables.

Dependent variable is something that depends on other factors. In this example, the independent variable is seed type which cannot be changed by other variables. The amount of water, vermiculite and light are constant and are same for all the seeds. The dependent variable is the germination.