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Q.
The 'Cell theory" states that
Chhattisgarh PMTChhattisgarh PMT 2004
Solution:
All living beings are made up of cell. "The cell is the basic morphological and functional unit of life". This statement was known as cell theory. Although the cell theory is credited to Matthias Schleiden $(1838)$ a botanist of Germany and Theodor Schwann $(1839)$ a zoologist also of Germany, in $17^{th}$ century. Schleiden and Schwann in $1838-1839$ formulated the theory, which originally contained following statements:
[a] All living beings are made up of cells and products formed by cells.
[b] Cells are the structural and functional units of life.