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Q. No.The stage between the two meiotic divisions is called:
1.
interkinesis and there is no replication of DNA during this stage.
2.
interkinesis and there is replication of DNA during this stage.
3.
interphase II and there is no replication of DNA during this stage.
4.
interphase II and there is replication of DNA during this stage.
Subtopic: Intro to Cell Cycle & Interphase | Cell Cycle: Meiosis I |
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How many of the given statements will correctly apply to the significance of mitosis?
| I: | Mitosis usually results in the production of diploid daughter cells with identical genetic complement. |
| II: | The growth of multicellular organisms is due to mitosis. |
| III: | It restores the nucleo-cytoplasmic ratio of a cell. |
| IV: | A very significant contribution of mitosis is cell repair. |
| V: | It replaces lost cells. |
| VI: | Mitotic divisions in the meristematic tissues – the apical and the lateral cambium, result in a continuous growth of plants throughout their life. |
| VII: | It creates genetic variation for acting as raw material for natural selection. |
| 1. | 4 | 2. | 5 |
| 3. | 6 | 4. | 7 |
Subtopic: Intro to Cell Cycle & Interphase | Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
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Consider the two given statements:
1. Statement I is incorrect; Statement II is incorrect
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is correct; Statement II is correct
| Statement I: | At the time of cytoplasmic division, organelles like mitochondria and plastids get distributed between the two daughter cells. |
| Statement II: | In some organisms karyokinesis is not followed by cytokinesis as a result of which multinucleate condition arises leading to the formation of syncytium (e.g., liquid endosperm in coconut). |
1. Statement I is incorrect; Statement II is incorrect
2. Statement I is correct; Statement II is incorrect
3. Statement I is incorrect; Statement II is correct
4. Statement I is correct; Statement II is correct
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
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Level 1: 80%+
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Consider the given two statements:
| Statement I: | With few exceptions, in animals, mitotic cell division is generally only seen in the diploid somatic cells. |
| Statement II: | The plants can show mitotic divisions in both haploid and diploid cells. |
| 1. | Statement I is incorrect; Statement II is incorrect |
| 2. | Statement I is correct; Statement II is incorrect |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is correct; Statement II is correct |
Subtopic: Intro to Cell Cycle & Interphase |
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Level 1: 80%+
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Consider the given two statements:
| Assertion (A): | Meiosis is the mechanism by which conservation of specific chromosome number of each species is achieved across generations in sexually reproducing organisms. |
| Reason (R): | Cells in G0 stage no longer remain metabolically active and no longer proliferate unless called on to do so depending on the requirement of the organism. |
| 1. | (A) is True; (R) is False |
| 2. | Both (A) and (R) are True and (R) correctly explains (A) |
| 3. | Both (A) and (R) are True but (R) does not correctly explain (A) |
| 4. | (A) is False; (R) is True |
Subtopic: Intro to Cell Cycle & Interphase | Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
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At the end of the S phase in a typical eukaryotic cell cycle:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | the amount of DNA per cell doubles |
| II: | there is no increase in the chromosome number |
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Intro to Cell Cycle & Interphase |
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Duration of cell cycle can vary from:
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
| I: | organism to organism |
| II: | from cell type to cell type in the same organism |
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
Subtopic: Intro to Cell Cycle & Interphase |
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In contrast to meiosis I, meiosis II:
| 1. | is much lengthy in duration. |
| 2. | leads to reduction in the number of chromosomes. |
| 3. | is characterised by replication of DNA just before its beginning. |
| 4. | resembles a normal mitosis. |
Subtopic: Cell Cycle: Meiosis II |
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Which stage of prophase I of meiosis I can last for months or years in oocytes of some vertebrates?
1. Zygotene
2. Pachytene
3. Diplotene
4. Diakinesis
1. Zygotene
2. Pachytene
3. Diplotene
4. Diakinesis
Subtopic: Cell Cycle: Meiosis I |
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During mitosis, the complete disintegration of the nuclear envelope marks the start of:
1. Prophase
2. Metaphase
3. Anaphase
4. Telophase
1. Prophase
2. Metaphase
3. Anaphase
4. Telophase
Subtopic: Cell Division: Mitosis (Karyokinesis) |
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Level 1: 80%+
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