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Q. No.The diagram shows cytokinesis in animal cell [I] and in plant cell [II]. What will be correct for A, B and C in these cells?
Animal cell
Plant cell
A.
Furrow formed using actin and myosin
Vesicles from Golgi move to centre
B.
The furrow reaches centre from periphery
Tubular structures merge to form plasma membrane
C.
Cells pinched apart
Pectins deposited leading to formation of middle lamella
1.
Only A and B
2.
Only A and C
3.
Only B and C
4.
A, B and C
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
55%
Level 3: 35%-60%
Hints
The given diagram shows a slide with cells labeled as A, B, C and D at different stages of cell division. Identify the correct match:
| A | B | C | D | |
| 1. | Interphase | Telophase | Prophase | Anaphase |
| 2. | Interkinesis | Anaphase | Prophase | Metaphase |
| 3. | Interkinesis | Telophase | Metaphase | Anaphase |
| 4. | Interphase | Prophase | Metaphase | Anaphase |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
66%
Level 2: 60%+
Hints
In a eukaryote, the cell cycle typically is divided into:
| 1. | Two phases | 2. | Three phases |
| 3. | Four phases | 4. | Five phases |
Subtopic: Intro to Cell Cycle & Interphase | Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
74%
Level 2: 60%+
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In a somatic eukaryotic cell undergoing mitosis, when do expect to find most number of chromosomes in the cell?
| 1. | At the end of the G1 phase |
| 2. | At the end of the S phase |
| 3. | At the end of Anaphase |
| 4. | In the resultant daughter cells |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
61%
Level 2: 60%+
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Hints
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Study the given two statements – an Assertion and Reason, and select the correct answer from the options given:
| Assertion(A): | Meiosis is the mechanism by which conservation of specific chromosome number of each species is achieved across generations in sexually reproducing organisms. |
| Reason(R): | Meiosis increases the genetic variability in the populations of organisms from one generation to the next. |
| 1. | Both (A) and (R) are true and (R) correctly explains (A) |
| 2. | (A) is true but (R) is false |
| 3. | (A) is false but (R) is true. |
| 4. | Both (A) and (R) are true but (R) does not correctly explain (A). |
Subtopic: Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
53%
Level 3: 35%-60%
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In Prophase I of Meiosis I, recombination between homologous chromosomes is completed:
| 1. | by the end of zygotene |
| 2. | by the end of pachytene |
| 3. | at the beginning of diplotene |
| 4. | when terminalisation of chiasmata occurs at diakinesis |
Subtopic: Cell Cycle: Meiosis I |
75%
Level 2: 60%+
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During meiosis I, the chromosomes start pairing at:
| 1. | Zygotene | 2. | Pachytene |
| 3. | Diplotene | 4. | Leptotene |
Subtopic: Cell Cycle: Meiosis I |
76%
Level 2: 60%+
NEET - 2013
Hints
During the metaphase stage of mitosis spindle fibres attach to chromosomes at:
| 1. | kinetochore |
| 2. | both centromere and kinetochore |
| 3. | centromere, kinetochore and areas adjoining centromere |
| 4. | centromere |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
90%
Level 1: 80%+
NEET - 2013
Hints
A and B in the given diagram are events seen in Meiosis I and C and D are events seen in Meiosis II. Identify the correct match:
| A: | Prophase I and arrow shows chiasmata |
| B: | Anaphase I and arrow shows sister chromatids associated at centromere |
| C: | Prophase II and arrows show attachment of spindle microtubules to kinetochore |
| D: | Anaphase II and the diagram shows separated sister chromatids after the split of centromere |
| 1. | Only A, B and C | 2. | Only A, C and D |
| 3. | Only B, C and D | 4. | A, B, C and D |
Subtopic: Cell Cycle: Meiosis I |
62%
Level 2: 60%+
Hints
The event shown in the given diagram takes place during:
| 1. Pachytene of Prophase I | 2. Diplotene of Prophase I |
| 3. Metaphase II | 4. Anaphase II |
Subtopic: Cell Cycle: Meiosis I |
85%
Level 1: 80%+
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