Question Detail
Question
Which of the following is not a principle of the cell theory?
Correct Answer
Option B is the correct answer.
Detailed Explanation
The three core principles of the cell theory are: 1) All living organisms are composed of one or more cells. 2) The cell is the basic unit of structure and organization in organisms. 3) All cells arise from pre-existing cells. Not all cells contain chloroplasts (e.g., animal cells, fungal cells).
Hint
Chloroplasts are specific to certain cell types, not universal.