Class 11 · Cell: The Unit of Life

Cell Theory and Plant Cell Structure — NEET Biology

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In 1838, Matthias Schleiden, a German botanist, 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. At about the same time, Theodore

NCERT Biology · Class 11 · Chapter 8 · Paragraph 7
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Match the scientists with their respective contributions : COLUMN I (Scientists) a) Matthias Schleiden b) Theodor Schwann c) Rudolf Virchow d) Robert Brown COLUMN II (Contributions) i) Discovered the nucleus ii) Proposed that all plants are composed of cells iii) Reported that animal cells have a plasma membrane; proposed cell theory with Schleiden iv) Stated that all cells arise from pre-existing cells (Omnis cellula-e cellula)

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Correct answer: C a–ii, b–iii, c–iv, d–i

Schleiden (a–ii): “All plants are composed of cells.” Schwann (b–iii): Reported animal cells have plasma membrane, proposed cell theory jointly. Virchow (c–iv): Stated “all cells arise from pre-existing cells.” Robert Brown (d–i): Discovered the nucleus.

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In 1838, Matthias Schleiden, a German botanist, 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. At about the same time, Theodore
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Cell: The Unit of Life, Class 11 NCERT Biology.

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