How Does Schleiden Contribute to the Cell Theory?


Diego Sanchez

German botanist Matthias Jakob Schleiden was an instrumental figure in the development of the cell theory. This theory states that all living things are made up of cells, which are the basic units of life. Schleiden’s contributions to this theory were significant and cannot be overlooked.

Early Life and Education

Schleiden was born on April 5, 1804, in Hamburg, Germany. He studied law at the University of Heidelberg but soon developed an interest in natural science. After obtaining a doctorate in botany from the University of Jena in 1839, he began to study plant cells under a microscope.

Discoveries and Contributions

Schleiden’s observations led him to conclude that all plants were composed of cells. In 1838, he published his findings in a book titled “Beiträge zur Phytogenesis” (Contributions to Phytogenesis), which became a seminal work in plant cell research.

Schleiden also postulated that cells were not only the building blocks of plants but also played a similar role in animal tissues. This hypothesis laid the foundation for the cell theory.

The Cell Theory

The cell theory states that all living organisms are composed of one or more cells and that these cells are the basic units of life. It also states that all cells arise from pre-existing cells.

This theory was first proposed by Schleiden’s colleague Theodor Schwann, who studied animal tissues. However, Schwann’s work only covered animals while Schleiden’s contribution extended it to include plants as well.

Legacy and Impact

Schleiden’s contributions to botany and cell biology were immense. His work helped lay the foundation for modern biology and paved the way for further research into cellular structures and functions.

In addition to his scientific achievements, Schleiden was also a prolific writer and educator. He served as a professor of botany at the University of Jena and later at the University of Dorpat in Estonia.


Schleiden’s work on plant cells and his postulation that all living things are composed of cells were crucial in the development of the cell theory. His contributions continue to influence modern biology, and his legacy lives on as one of the pioneering figures in cell biology.