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MCQ
Which of the following is NOT a part of the cell theory?
Unit-3 The cell
A All organisms are composed of one or more cells
B The cell is the basic unit of structure and function of organisms
C All cells arise from pre-existing cells
D All cells contain a cell wall and chloroplasts
Explanation

The cell theory does not state that all cells have cell walls or chloroplasts; these are present only in some cells.

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