Antonie Von Leeuwenhoek first saw and described a live cell. Robert Brown later discovered the nucleus. The invention of the microscope and its improvement leading to the electron microscope revealed all the structural details of the cell.
Match the following historical figures related to cell biology with their significant contributions or observations. Column I (A) Rudolf Virchow (B) Antonie Von Leeuwenhoek (C) Theodore Schwann (D) Robert Brown (E) Matthias Schleiden Column II (1) Discovered the nucleus (2) Proposed the hypothesis that bodies of animals and plants are composed of cells and products of cells (3) First saw and described a live cell (4) Explained that cells divided and new cells are formed from pre-existing cells (5) Examined a large number of plants and observed all plants are composed of cells
Correct answer: A — (A)-(4), (B)-(3), (C)-(2), (D)-(1), (E)-(5)
Let's match each historical figure with their correct contribution: (A) Rudolf Virchow: He first explained that cells divided and new cells are formed from pre-existing cells (Omnis cellula-e cellula). So, (A) matches with (4). (B) Antonie Von Leeuwenhoek: He first saw and described a live cell. So, (B) matches with (3). (C) Theodore Schwann: He studied animal cells and proposed the hypothesis that the bodies of animals and plants are composed of cells and products of cells. So, (C) matches with (2). (D) Robert Brown: He later discovered the nucleus. So, (D) matches with (1). (E) Matthias Schleiden: He examined a large number of plants and observed that all plants are composed of different kinds of cells which form the tissues of the plant. So, (E) matches with (5). Therefore, the correct match is (A)-(4), (B)-(3), (C)-(2), (D)-(1), (E)-(5). Option A correctly aligns all the contributions. Options B, C, and D contain incorrect pairings for one or more figures. The core concept tested is the historical development of cell theory and key discoveries in cell biology.
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