- 1(current)
Q. No.Consider the given statements:
| Statement I: | Anton von Leeuwenhoek first saw and described a live cell and Robert Brown discovered nucleus. |
| Statement II: | The invention of electron microscope revealed all the structural details of the cell. |
| 1. | Statement I is correct and Statement II is incorrect |
| 2. | Both Statement I and Statement II are correct but Statement II does not explain Statement I |
| 3. | Both Statement I and Statement II are correct and Statement II correctly explains Statement I |
| 4. | Only Statement II is correct |
Subtopic: Cell Theory |
62%
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Consider the given two statements:
1. Statement I is correct; Statement II is correct
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
| Statement I: | In 1838, Matthias Schleiden, a German botanist, examined a large number of plants and observed that the presence of cell wall is a unique character of the plant cells. |
| Statement II: | In 1839, Theodore Schwann, a British Zoologist, studied different types of animal cells and reported that cells had a thin outer layer which is today known as the ‘plasma membrane’. |
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is incorrect; Statement II is incorrect
Subtopic: Cell Theory |
From NCERT
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Who concluded, based on his studies on plant tissues, that the presence of cell wall is a unique character of plant cells?
| 1. | Matthias Shcleiden | 2. | Theodore Schwann |
| 3. | J. B. S. Haldane | 4. | Rudolph Virchow |
Subtopic: Cell Theory |
69%
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How many of the given statements are true?
1. 1
2. 2
3. 3
4. 4
| I: | All cells arise from pre-existing cells. |
| II: | Prokaryotic cells do not have any organelles. |
| III: | Eukaryotic cells have only membrane bound organelle. |
| IV: | Centrosome helps in cell division in plants and animals. |
2. 2
3. 3
4. 4
Subtopic: Cell Theory | Eukaryotic Cell Orgenelle | Lysosomes | Ribosome and Inclusion Bodies |
59%
From NCERT
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Which 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?
1. Theodore Schwann
2. Rudolf Virchow
3. Jan Evangelista Purkyně
4. Matthias Schleiden
1. Theodore Schwann
2. Rudolf Virchow
3. Jan Evangelista Purkyně
4. Matthias Schleiden
Subtopic: Cell Theory |
88%
From NCERT
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“Omnis cellula-e cellula” means:
1. all cells have a cell membrane
2. only cells are capable of living existence
3. all cells come from cells
4. all cells are capable of dividing
1. all cells have a cell membrane
2. only cells are capable of living existence
3. all cells come from cells
4. all cells are capable of dividing
Subtopic: Cell Theory |
89%
From NCERT
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Cell theory, as understood today, is:
| I: | All living organisms are composed of cells and products of cells |
| II: | Cells of living organisms may or may not have cell walls |
| III: | All cells arise from pre-existing cells |
| 1. | Only I and II | 2. | Only I and III |
| 3. | Only II and III | 4. | I, II and III |
Subtopic: Cell Theory |
66%
From NCERT
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Q. No.
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