The control group is the group that is having nothing done to it, out of the ordinary. The Experimental group is the group that will be given procedures, such as shots or a different diet, to test the results. These results will be compared to the control group. Through out an experiment, this will show changes, such as behavior, appearance, etc, in reaction to special treatment to the experimental group, which is not given to the control group.
Example: A scientist wants to know if a crop of corn will grow stronger & faster fed sugar water, rather than regular water. In this situation, the control group would continue to be fed with regular water, & the experimental group would be fed with the sugar water.
Example: A scientist wants to know if a crop of corn will grow stronger & faster fed sugar water, rather than regular water. In this situation, the control group would continue to be fed with regular water, & the experimental group would be fed with the sugar water.