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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:  Cell Division: Mitosis (Cytokinesis) |
 85%
Level 1: 80%+
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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:  Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
 61%
Level 2: 60%+
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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:  Cell Cycle: Meiosis II |
 77%
Level 2: 60%+
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Amount of cellular DNA increases during:

1. Cytokinesis 2. Fertilisation
3. Mutation 4. Respiration
Subtopic:  Cell Cycle: Meiosis I |
 55%
Level 3: 35%-60%
AIPMT - 1999
Hints

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:  Cell Division: Mitosis (Karyokinesis) | Cell Cycle: Meiosis I |
 74%
Level 2: 60%+
Hints
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:  Cell Division: Mitosis (Karyokinesis) |
 92%
Level 1: 80%+
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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:  Cell Division: Mitosis (Karyokinesis) | Cell Cycle: Meiosis II |
 71%
Level 2: 60%+
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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:  Intro to Cell Cycle & Interphase |
 94%
Level 1: 80%+
Hints
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:  Cell Division: Mitosis (Karyokinesis) |
 67%
Level 2: 60%+
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:  Cell Division: Mitosis (Karyokinesis) |
 82%
Level 1: 80%+
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