Question

Who and when was the "The cell theory" proposed. When did they prepare it? What are its salient features of it?

Answer 1

Schleiden and schwann proposed the cell theory in 1839.
It says...
1. All living organisms are made up of one or more cells
2. Cell is the basic structural and functional unit of life
3. All cells arise from pre- existing cells

Hope this helps.......

Answer 2

Explanation:

All living organisms are composed of one or more cells. The cell is the basic unit of structure and organization in organisms. Cells arise from pre-existing cells.

Matthias Jakob Schleiden was a German botanist and co-founder of cell theory, along with Theodor Schwann and Rudolf Virchow.