Answer :
Answer and Explanation: The independent variable of the experiment would be the amount of sunlight each plant is exposed to. The dependent variable would be the height of each plant after a specified time interval. The control group would be the plant that is not exposed to sunlight at all. The constants of the experiment would be the type of soil each plant grows in, the level of nutrition available in the soil, the amount of space available for growth, and the amount of time each plant has to grow.
When designing an experiment, we're trying to determine the effects of one variable on another. The independent variable is the variable that is being modified to determine its effects. In this case, it's sunlight since we're trying to see whether different levels of sunlight have an effect on plant growth.
On the other hand, the dependent variable is the variable being collected and measured in this experiment. Experiments are created to determine whether the independent variable has any effect on the dependent variable being measured. In this case, we're seeing whether the amount of sunlight a plant is exposed to affects its growth. Thus, the amount of each growth each plant experiences is the dependent variable.
When conducting an experiment, its important to have multiple groups exposed to varying levels of the independent variable to determine its effect. A control group is a group that is usually not exposed to the independent variable at all. Thus, a suitable control group for this experiment would be a plant that is not exposed to sunlight at all.
The constants are other variables in the experiment that are kept constant to ensure that the independent variable is the only variable being manipulated. After all, if other variables were manipulated as well, there is no guarantee that the independent variable is the variable affecting the dependent variable. Thus, we have to make sure that all of the plant groups are growing in the same conditions, with the only difference being the amount of sunlight each group is exposed to.
