Correct option is A
The correct answer is (A) By observing cork.
Explanation:
- Robert Hooke discovered the cell in 1665 when he observed a thin slice of cork under a microscope.
- He noted small, box-like structures and termed them "cells", as they resembled small rooms or "cellula" in Latin.
Information Booster:
- Robert Hooke (1635–1703): An English scientist, the first to observe the microscopic structure of cork.
- Cell Theory Contribution: His discovery laid the foundation for the cell theory, which states that all living organisms are composed of cells.
- Microscope Used: Hooke used a self-designed compound microscope to make his discovery.
- Book Published: His findings were published in his book "Micrographia" in 1665.
- Cork Cells: Hooke observed that cork cells were empty, as they were actually the remains of dead plant cells.
- Advancement: Later, scientists like Anton van Leeuwenhoek observed living cells under a microscope, improving the understanding of cell structure.