Multiple choice

All plants and animals are composed of cells. Who proposed this cell theory for the first time?

  1. Robert Hooke and Robert Brown

  2. Leeuwenhoek and J. E Purkinje

  3. M. Schleiden and T. Schwann

  4. J. E. Purkinje and M. Schleiden

  5. Robert Hooke and T. Schwann

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Schleiden in 1838 and Schwann in 1839 proposed the cell theory that all plants and animals are composed of cells.