Question

Who and when proposed the cell theory . what are the salient features of it

Answer 1

Schleiden and Schwann Purposed the cell theory in 1838 and 1839.
According to them a cell arise from pre-existing cell.

Answer 2

Having proposed by schwann and scheiden in the year 1839. Rudolf virchow in 1858 made an addition to it.
The cell theory has 3 major points
1. The cell is the smallest unit of structure of all living thing.
2. The cell is the unit of function of all living things.
3. All cell arise from pre existing cells.