The cytoplasm is the part of the cell that contains the cell's organelles. It's also where cell activity takes place.
The nucleus is the control unit of the cell. It contains the genetic DNA of the cell.
The cell wall is the protection or barrier around the cell to maintain the cell's shape.
The mitochondria is the power house for the cell. It is responsible for cellular energy.
The chloroplasts are the part of cell that contains a green pigment called chlorophyll to give the leaves of the plants a green color and to allow the plant to carryout photosynthesis.