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Q. No.How many of the given statements are true?
1. 1
2. 2
3. 3
4. 4
| I: | Gametes contain half the number of chromosomes found in somatic cells. |
| II: | Somatic cells have the diploid number of chromosomes. |
| III: | The haploid number of chromosomes in humans is 23. |
| IV: | The diploid number of chromosomes in humans is 23 pairs. |
2. 2
3. 3
4. 4
Subtopic: Intro to Cell Cycle & Interphase | Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
72%
From NCERT
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The Mitotic phase of a typical eukaryotic cell is divided into:
| 1. | Two stages | 2. | Three stages |
| 3. | Four stages | 4. | Five stages |
Subtopic: Intro to Cell Cycle & Interphase |
From NCERT
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Some cells in adult animals do not appear to exhibit division. A typical example of such a cell will be:
| 1. | Skin epithelial cell | 2. | Neuron |
| 3. | Fibroblast | 4. | Phagocytes |
Subtopic: Intro to Cell Cycle & Interphase |
89%
From NCERT
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Consider the given two statements:
| Assertion (A): | Mitosis is also called as equational division. |
| Reason (R): | The number of chromosomes in the parent cells undergoing mitosis and progeny cells is the same. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
90%
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) |
61%
From NCERT
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Identify the incorrect statement regarding the cell cycle of a typical eukaryotic cell:
| 1. | The interphase lasts more than 95% of the duration of the cell cycle. |
| 2. | M phase starts with the nuclear division. |
| 3. | Interphase is the resting stage in the cell cycle where the cell is metabolically inactive. |
| 4. | Neurons in human body are permanently in G0 phase of the cell cycle. |
Subtopic: Intro to Cell Cycle & Interphase |
83%
From NCERT
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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 |
89%
From NCERT
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Organisms prefer sexual mode of reproduction in adverse conditions because:
| 1. | It leads to a rapid proliferation of numbers |
| 2. | It requires two individuals that can support the progeny |
| 3. | It is less energy consuming than the asexual mode of reproduction |
| 4. | It provides protection and increases variations that may help progeny to survive |
Subtopic: Cell Cycle: Meiosis I |
92%
From NCERT
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The complex formed by a pair of synapsed homologous chromosomes, called a bivalent or a tetrad, is most clearly visible during which given stage of the meiotic cell division?
1. G2 phase
2. Leptotene
3. Zygotene
4. Pachytene
1. G2 phase
2. Leptotene
3. Zygotene
4. Pachytene
Subtopic: Cell Cycle: Meiosis I |
84%
From NCERT
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Identify the correct statement regarding meiosis amongst the following:
| I: | Meiosis involves two sequential cycles of nuclear and cell divisions but only a single cycle of DNA replication. |
| II: | Meiosis II is initiated after the parental chromosomes have replicated to produce identical sister chromatids at the S phase. |
| III: | Meiosis involves pairing of bivalents and recombinations between them. |
| 1. | I only | 2. | I and II only |
| 3. | I and III only | 4. | I, II and III |
Subtopic: Cell Cycle: Meiosis I |
59%
From NCERT
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