A botanist conducted an experiment to test the effect of light on plants. Fifty plants of a flowering species were grown for 60 days under different lengths of artificial daylight. Flowers could be white or pink based on the parent plant genes. The amount of water and fertilizer provided was constant. At the end of the experiment, the size of each leaf for all plants is measured. What is the dependent variable in this experiment?
A) duration of artificial daylight
B) flower's color
C) leaf's size
D) duration of the experiment

Question

Quizplus · Accepted Answer

The dependent variable is the variable that is being measured for changes in response to the independent variable. In this experiment, the independent variable is the duration of artificial daylight, and the dependent variable is the size of each leaf. This is because the size of the leaf is being measured as a response to changes in the amount of light the plant received. Flower color is not relevant to the experiment and is not being measured, and the duration of the experiment is not the variable being manipulated or measured.

A Botanist Conducted an Experiment to Test the Effect of Light