Respuesta :
I think it took nearly 200 years because they had to prove the properties of cells and that took a very smart and committed group of people to do this so I took that nearly 200 years for someone to think about creating the cell theory.... this is just my thought.
Robert hook coin the term cell after the experiment on the dead cork cell.
The shape of a cell is honeycomb-like and called a cell.
After the discovery of the cell in 1665, the cell theory develops 200 years later because at that time the equipment was not fully developed and it is very hard to study the internal structure of the cell.
In the 1900s the electron microscope was invented which make the study of cells easier and understanding the fact of the cell.
This is why it took so long.
For more information, refer to the link:-
https://brainly.com/question/22810476