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Q. No.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) |
Level 3: 35%-60%
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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%
Level 3: 35%-60%
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Metaphase I is different from mitotic metaphase as in the later case
| 1. | Two metaphasic plates are formed |
| 2. | Tetrads are arranged at the equator |
| 3. | Single metaphasic plate is formed |
| 4. | Homologous chromosomes get separated from each other |
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Cycle: Meiosis I |
Level 3: 35%-60%
Hints
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%
Level 2: 60%+
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Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R)
| Assertion (A): | The growth of the multicellular organism is due to mitosis |
| Reason (R): | Mitosis is also called as equational division and it offers genetic stability |
In light of the above statements choose the correct answer from the options given below:
| 1. | (A) is True but (R) is False. |
| 2. | (A) is False but (R) is True. |
| 3. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
Level 3: 35%-60%
NEET - 2022
Hints
Consider the given two statements:
| Assertion (A): | Metaphase is the stage at which morphology of chromosomes is most easily studied. |
| Reason (R): | At this stage, metaphase chromosome is made up of two sister chromatids, which are held together by the centromere. |
| 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: Cell Division: Mitosis (Karyokinesis) |
52%
Level 3: 35%-60%
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Identify the incorrect statement(s):
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
| I: | In some lower plants and in some social insects, haploid cells also divide by mitosis. |
| II: | Mitotic divisions in the meristematic tissues – the apical and the lateral cambium, result in a continuous growth of plants throughout their life. |
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Cell Division: Mitosis (Karyokinesis) |
52%
Level 3: 35%-60%
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