Q. No.Consider the given two statements:
| I: | The kinetochore is essential for the chromosome segregation that is classically associated with mitosis and meiosis. |
| II: | The kinetochore assembles on the centromere and links the chromosome to microtubule polymers from the mitotic spindle during mitosis and meiosis. |
| 1. | Both I and II are correct and II explains I |
| 2. | Both I and are correct but II does not explain I |
| 3. | I is correct and II is incorrect |
| 4. | Both I and II are incorrect |
Subtopic: Â Cell Division: Mitosis (Karyokinesis) |Â Cell Cycle: Meiosis I |
 73%
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Which of the following is not a characteristic feature during mitosis cells ?
| 1. | Disappearance of nucleolus | 2. | Chromosome movement |
| 3. | Synapsis | 4. | Spindle fibres |
Subtopic: Â Cell Division: Mitosis (Karyokinesis) |
 92%
From NCERT
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Centromeres split leading to the separation of sister chromatids and the pulling of the separated sister chromatids to the opposite poles is seen in:
| I: | Mitotic anaphase |
| II: | Anaphase I |
| III: | Anaphase II |
| 1. | Only I | 2. | Only I and II |
| 3. | Only III | 4. | Only I and III |
Subtopic: Â Cell Division: Mitosis (Karyokinesis) |Â Cell Cycle: Meiosis II |
 71%
From NCERT
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With respect to metaphase, which of the following statements is incorrect ?
| 1. | Complete disintegration of nuclear envelope takes place. |
| 2. | Chromosomes are highly condensed. |
| 3. | Metaphase chromosomes are made up of four sister chromatids held together by centromere. |
| 4. | Chromosomes lie at the equator of the cell. |
Subtopic: Â Cell Division: Mitosis (Karyokinesis) |
 67%
From NCERT
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Attachment of spindle fibers to kinetochores of chromosomes becomes evident in:
| 1. | Anaphase | 2. | Telophase |
| 3. | Prophase | 4. | Metaphase |
Subtopic: Â Cell Division: Mitosis (Karyokinesis) |
 81%
From NCERT
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If you are provided with root-tips of onion in your class and are asked to count the chromosomes, which of the following stages can you most conveniently look into?
| 1. | Telophase | 2. | Anaphase |
| 3. | Prophase | 4. | Metaphase |
Subtopic: Â Cell Division: Mitosis (Karyokinesis) |Â Cell Division: Mitosis (Cytokinesis) |
 82%
From NCERT
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Plants show mitotic divisions:
| 1. | only in germ line cells |
| 2. | at the root apex and shoot apex only |
| 3. | in both diploid and haploid cells |
| 4. | for the productions of gametes only |
Subtopic: Â Cell Division: Mitosis (Karyokinesis) |Â Cell Division: Mitosis (Cytokinesis) |
 76%
From NCERT
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Consider the following events:
| I. | Centromere split and chromatids separate |
| II. | Chromatids move to opposite poles |
The stage of mitosis characterized by these two events is:
| 1. | Prophase | 2. | Metaphase |
| 3. | Anaphase | 4. | Telophase |
Subtopic: Â Cell Division: Mitosis (Karyokinesis) |
 92%
From NCERT
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Spindle fibres attach on to
| 1. | kinetochore of the chromosome |
| 2. | centromere of the chromosome |
| 3. | kinetosome of the chromosome |
| 4. | telomere of the chromosome |
Subtopic: Â Cell Division: Mitosis (Karyokinesis) |
 97%
From NCERT
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The phase of the cell cycle that lasts for the least time is the:
| 1. | G1 phase | 2. | S phase |
| 3. | G2 phase | 4. | M phase |
Subtopic: Â Cell Division: Mitosis (Karyokinesis) |Â Cell Division: Mitosis (Cytokinesis) |
 85%
From NCERT
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