What is the main principle of cell theory?

What is the main principle of cell theory?
  1. All living organisms are composed of cells and products of cells
  2. All cells arise from the fusion of different cells
  3. All cells are created from non-living matter
  4. All cells arise from pre-existing cells

Solution

The main principle of the cell theory is that all cells arise from pre-existing cells, also known as Omnis cellula-e cellula. This principle was first explained by Rudolf Virchow.

Asked in: NCERT

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