Who Proposed That All Animals and Plants Consist of Cells

Question

Who proposed that all animals and plants consist of cells that contain a nucleus?
A) Matthias Schleiden
B) Rudolf Virchow
C) Theodor Schwann
D) Anton van Leeuwenhoek

Accepted Answer

Theodor Schwann proposed that all animals and plants consist of cells that contain a nucleus, contributing to the cell theory.