Select the statements which are related to Schwann.

1. He reported that cells have a thin outer layer which is today known as plasma membrane
2. Cell wall is a unique character of the plant cell.
3. Body of plants and animals are composed of cells and products of cells.

Correct Answer : D.

All the given statements are related to Schwann Theodor. Schwann was a German physiologist. His contributions to biology include the development of cell theory, the discovery of Schwann cells in the peripheral nervous system, the discovery and study of pepsin, the discovery of the organic nature of yeast, and the invention of the term metabolism.