a plant cell is a kind of cell & a cell is a kind of object & a cell is very small ->  a plant cell is a very small object  a plant cell is a very small object & a part of an object is smaller in size than the whole object ->  a part of the plant cell will be smaller than a plant cell  a part of the plant cell will be smaller than a plant cell & a microscope is used to see small things by scientists by making them appear bigger -> a microscope can be used to see parts of the plant cell