Answer:
Matthias Jakob Schleiden (1804-1881) was a German botanist and co-founder of cell theory, along with Theodor Schwann and Rudolf Virchow.
Explanation:
Schleiden was one of the first German biologists to accept Charles Darwin's theory of evolution. He became professor of botany at the University of Dorpat in 1863. He concluded that all plant parts are made of cells and that an embryonic plant organism arises from the one cell.
