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Q. No.In plant cell division, the formation of the new cell wall begins with the formation of a simple precursor called:
| 1. | the cell plate that represents the middle lamella |
| 2. | the cell plate that represents the primary cell wall |
| 3. | the cleavage furrow that represents the middle lamella |
| 4. | the contractile ring that represents the primary cell wall |
Subtopic: Â Cell Division: Mitosis (Cytokinesis) |
 85%
From NCERT
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Humans have a haploid chromosome number n = 23. How many tetrads will be formed during meiosis?
| 1. | 23 | 2. | 46 |
| 3. | 69 | 4. | 92 |
Subtopic: Â Cell Cycle: Meiosis I |Â Cell Cycle: Meiosis II |
 61%
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Arrange the following events of meiosis in correct sequence
(a) Crossing over
(b) Synapsis
(c) Terminalisation of chiasmata
(d) Disappearance of nucleolus
| 1. | (b), (c), (d), (a) | 2. | (b), (a), (d), (c) |
| 3. | (b), (a), (c), (d) | 4. | (a), (b), (c), (d) |
Subtopic: Â Cell Cycle: Meiosis II |
 77%
From NCERT
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Amount of cellular DNA increases during:
| 1. | Cytokinesis | 2. | Fertilisation |
| 3. | Mutation | 4. | Respiration |
Subtopic: Â Cell Cycle: Meiosis I |
 55%
From NCERT
AIPMT - 1999
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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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The fruit fly has 8 chromosomes (2n) in each cell. During the interphase of mitosis, if the number of chromosomes at G1 phase is 8, what would be the number of chromosomes after the S phase?
| 1. | 4 | 2. | 32 |
| 3. | 8 | 4. | 16 |
Subtopic: Â Intro to Cell Cycle & Interphase |
 94%
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
NEET - 2022
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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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