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Q. No.Number of meiotic divisions required to produce 1000 pollen grains in wheat is
1. 250
2. 500
3. 1000
4. 1250
Subtopic: Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
66%
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Formation and dissolution of synaptonemal complex takes place, respectively in
1. Zygotene and diakinesis
2. Zygotene and diplotene
3. Pachytene and diplotene
4. Pachytene and diakinesis
1. Zygotene and diakinesis
2. Zygotene and diplotene
3. Pachytene and diplotene
4. Pachytene and diakinesis
Subtopic: Cell Cycle: Meiosis I |
75%
From NCERT
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Which one is correct with respect to mitosis?
1. Prophase is the shortest phase
2. It occurs only in apical meristem
3. It occurs in diploid cells only
1. Prophase is the shortest phase
2. It occurs only in apical meristem
3. It occurs in diploid cells only
4. It helps in growth and repair of cells in multicellular organisms
Subtopic: Cell Division: Mitosis (Karyokinesis) | Cell Division: Mitosis (Cytokinesis) |
84%
From NCERT
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The site of attachment of spindle fibers to chromosomes is
1. Centromere
2. Telomere
3. Kinetochore
4. Sister chromatids
1. Centromere
2. Telomere
3. Kinetochore
4. Sister chromatids
Subtopic: Cell Division: Mitosis (Karyokinesis) |
92%
From NCERT
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Which of the given statements is not related to cytokinesis of a plant cell?
1. New cell wall formation begins with the formation of a precursor called cell plate.
2. Distribution of plastids in two daughter cells
3. Wall formation starts in the centre
4. Formation of a furrow in the plasma membrane
1. New cell wall formation begins with the formation of a precursor called cell plate.
2. Distribution of plastids in two daughter cells
3. Wall formation starts in the centre
4. Formation of a furrow in the plasma membrane
Subtopic: Cell Division: Mitosis (Cytokinesis) |
77%
From NCERT
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Anastral and acentric cell division
1. Involves aster formation
2. Found in plants
3. Involves spindle fibers which arise from centrioles
4. Both (1) & (2)
1. Involves aster formation
2. Found in plants
3. Involves spindle fibers which arise from centrioles
4. Both (1) & (2)
Subtopic: Intro to Cell Cycle & Interphase |
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Metaphase is the best phase to study morphology of chromosomes. How many chromatids you can observe in a somatic cell of human at metaphase?
1. 23
2. 46
3. 92
4. 23 pairs
1. 23
2. 46
3. 92
4. 23 pairs
Subtopic: Cell Division: Mitosis (Karyokinesis) |
55%
From NCERT
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Identify the stages with the help of given features (A and B).
A. movement of chromosomes towards the opposite poles.
B. movement of chromatids towards the opposite poles.
| A | B | |
| 1 | Anaphase II | Anaphase I |
| 2 | Anaphase I | Anaphase II |
| 3 | Metaphase I | Anaphase II |
| 4 | Metaphase II | Metaphase I |
Subtopic: Cell Cycle: Meiosis I | Cell Cycle: Meiosis II |
82%
From NCERT
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Select the correct match.
| 1 | Metaphase | – | Nuclear membranes reassemble |
| 2 | Anaphase | – | Centromere splitting |
| 3 | Telophase | – | Congression |
| 4 | Prophase | – | Interzonal fibers |
Subtopic: Cell Division: Mitosis (Karyokinesis) |
90%
From NCERT
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In an animal cell, cytokinesis is achieved by the formation of
1. Cell plate
2. Furrow
3. Phragmoplast
4. Metaphase plate
1. Cell plate
2. Furrow
3. Phragmoplast
4. Metaphase plate
Subtopic: Cell Division: Mitosis (Cytokinesis) |
87%
From NCERT
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