Cells were first observed in cork by ______ in 1665.

- Cells were first observed in cork by Robert Hooke in 1665. In his book "Micrographia,"

- Hooke described and illustrated the microscopic structure of cork, noting the presence of small, box-like compartments that he called "cells."

- This observation marked an important milestone in the history of biology and laid the foundation for the discovery and understanding of cells as the basic building blocks of life.