Final answer:
Schwann and Schleiden made similar discoveries related to the cell theory, but they focused on different types of cells and made different specific observations.
Step-by-step explanation:
The discoveries of Schwann and Schleiden were similar in that they both contributed to the development of the cell theory, which states that all living things are composed of cells. They also both realized the importance of cells as the fundamental units of plants and animals.
Their discoveries were different in terms of their specific focus. Schwann primarily studied animal cells, while Schleiden focused on plant cells. Additionally, Schwann did not discover the cell nucleus, while Schleiden did describe the presence of nuclei in plant cells.