CBSENEETClass 9
What is cell theory?
Answer
Cell theory states that all living organisms are made of cells, the cell is the basic unit of life, and all cells arise from pre-existing cells.
The working
First point
All living organisms are composed of one or more cells.
Second point
The cell is the basic structural and functional unit of life.
Third point
All cells arise from previously existing cells, as added by Rudolf Virchow.
Who gave it
It was proposed by Schleiden and Schwann and later expanded by Virchow.
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