A group of organs that work together to perform a common function is an organ system
It is called making a PREDICTION.
Prediction refers to an act of forecasting about a particular matter. In scientific investigation, to predict means you are explaining what is going to be the likely results of the experiment which you are about to carry out. Your prediction might be wrong or right.<span />
Plant cells contain chloroplast which contain a light trapping pigment chlorophyll. Inside the chloroplast are organelles that functions the work of the chloroplasts. These are stroma, chlorophyll, thylakoid. Stroma is the aqueous space that surrounds the chlorophyll containing membrane of the chloroplast.