The Independent and Dependent Variables
The independent variables of this investigation are:
- Under what light source/environmental conditions (time of day) the transpiration was measured
- The rate of water which transpired during the given time and time of day
The Experimental Controls/Controlled Variables
These variable are the ones which will remain unchanged throughout the whole investigation. These are:
- The type of plants tested
- The soil which both plants are growing in
- The area where the plants are placed
- The amount of time the plants were given to transpire