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Q. No.The number of basic phases in the cell cycle of typical eukaryotic cells will be:
1. 2
2. 3
3. 4
4. 5
Subtopic: Intro to Cell Cycle & Interphase |
53%
From NCERT
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Which of the following does not take place during telophase of mitosis?
| 1. | Chromosomes become discrete. |
| 2. | Nuclear envelope reforms. |
| 3. | Chromosomes cluster at opposite spindle poles. |
| 4. | Nucleolus, endoplasmic reticulum, and Golgi complex reform. |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
60%
From NCERT
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In plant cells during the S phase,
1. Only A is correct
2. Only B is correct
3. Both A and B are correct
4. Both A and B are incorrect
| A: | DNA replication begins in the nucleus |
| B: | centriole duplicates in the cytoplasm |
2. Only B is correct
3. Both A and B are correct
4. Both A and B are incorrect
Subtopic: Intro to Cell Cycle & Interphase |
From NCERT
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Consider the given two statements:
| Statement I: | At Metaphase I the chromosomes align at the equator and the microtubules from opposite poles of the spindle get attached to the kinetochores of sister chromatids. |
| Statement II: | At metaphase II the bivalent chromosomes align on the equatorial plate and microtubules from the opposite poles of the spindle attach to the kinetochore of homologous chromosomes. |
| 1. | Statement I is correct and Statement II is incorrect. |
| 2. | Statement I is incorrect and Statement II is incorrect. |
| 3. | Statement I is correct and Statement II is correct. |
| 4. | Statement I is incorrect and Statement II is correct. |
Subtopic: Cell Cycle: Meiosis I |
59%
From NCERT
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In telophase I:
| Statement I: | The nuclear membrane and nucleolus reappear. |
| Statement II: | The chromosomes reach the extremely extended state of the interphase nucleus. |
| 1. | Statement I is correct and Statement II is incorrect. |
| 2. | Statement I is incorrect and Statement II is incorrect. |
| 3. | Statement I is correct and Statement II is correct. |
| 4. | Statement I is incorrect and Statement II is correct. |
Subtopic: Cell Cycle: Meiosis I |
57%
From NCERT
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Consider the given two statements:
| Statement I: | In male honeybees, haploid cells divide by mitosis. |
| Statement II: | Higher plants show mitotic divisions only in diploid cells. |
| 1. | Statement I is correct and Statement II is incorrect. |
| 2. | Statement I is incorrect and Statement II is incorrect. |
| 3. | Statement I is correct and Statement II is correct. |
| 4. | Statement I is incorrect and Statement II is correct. |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
58%
From NCERT
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A researcher is studying a plant species where the haploid number of chromosomes is 12 (n = 12). How many chromosomes would be visible in each daughter cell during metaphase of meiosis I?
| 1. | 24 | 2. | 6 |
| 3. | 12 | 4. | 18 |
Subtopic: Cell Cycle: Meiosis I |
52%
From NCERT
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Chromosomes duplicate during __A__ and increase in number of chromosomes is observed first during __B__. Identify A & B correctly.
| 1 | A – Interphase | B – Prophase |
| 2 | A – S – phase | B – Telophase |
| 3 | A – Synthetic phase | B – Gap 2 phase |
| 4 | A – Interphase | B – Anaphase |
Subtopic: Intro to Cell Cycle & Interphase | Cell Division: Mitosis (Karyokinesis) |
From NCERT
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The final stage of meiotic prophase I, diakinesis, is marked by:
1. Only I and II are correct
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
| I: | terminalisation of chiasmata |
| II: | decondensation of chromosomes |
| III: | assembly of the meiotic spindle |
2. Only I and III are correct
3. Only II and III are correct
4. I, II and III are correct
Subtopic: Cell Cycle: Meiosis I |
59%
From NCERT
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The given figure shows a cell at various stages of mitosis. What will be the number of chromosomes and content of DNA in the cells shown if the number of chromosomes and the content of DNA was 2N and 2C respectively at G1 phase?
1. 2N and 2C
2. 2N and 4C
3. 4N and 2C
4. 4N and 4C
1. 2N and 2C
2. 2N and 4C
3. 4N and 2C
4. 4N and 4C
Subtopic: Intro to Cell Cycle & Interphase | Cell Cycle: Meiosis II |
From NCERT
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