Answer:
D. Robert Hooke ✓
- In 1665, Robert Hooke was the first who observed cork cells and it's characteristic that is hexagonal in shape, using the first primitive microscope that is self-made microscope, which was invented by him at that time...
- He observed that the cork cells are honeycomb like structure...
- cork cells are dead cells...so Robert Hooke is the first who observed dead cells and after then Antoine van Leeuwenhoek discovered living cells from the pond...
- Robert Hooke described the cell as the basic unit of life...
Please see the attachment ^_^ ...
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