5 Paramecium could be accommodated in this FOV.
Explanation:
FOV refers to the field of view of the microscope.
It is the maximum length or area of specimen you can observe in a single view.
If a single paramecium occupies 20 % of the Entire FOV.
Then the number of paramecium that will be accomodate 100% of FOV will be given by ,
[tex]\frac{100}{20} = 5[/tex] Paramecium.
which is equal to 5.