Question

Cells were found to develop from pre-existing cells by

• A. Lamarck
• B. Schleiden and Schwann
• C. Virchow
• D. Leeuwenhoek

Answer 1

Answer: (C)

Robert Hook in 1665 coined the term cell while observing the plant cell under a microscope. In 1838 Matthias Jakob Schleiden, a botanist proposed that all plant tissues are made from cells. One year later, Theodor Schwann proposed that all animal tissues also are made from cells and that eggs are also cells as well. Rudolf Virchow in 1858 concluded that all cells come from preexisting cells, thus completing the classical cell theory.

Hence the correct answer is (C)