Joke Collection Website - Mood Talk - The cell theory mainly clarifies the diversity of cells or the unity of the biological world.
The cell theory mainly clarifies the diversity of cells or the unity of the biological world.
①The cell theory demonstrates the unity of the biological world, but does not reveal the diversity of animal and plant cells. ①Wrong.
② One of the main contents of the cell theory is that "animals and plants are composed of cells", which shows the unity of the structure of living organisms, ② correct.
③The cell theory does not explain the difference between animal cells and plant cells, nor does it explain the differences in the biological world. ③Wrong.
④The cell theory explains the unity of cells, ④Correct.
So the answer is: D.
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