1. Between prokaryotic and eukaryotic cells, which statement is correct regarding cell division time?
1. Prokaryotic cells take longer to divide
2. Both take equal time to divide
3. Prokaryotic cells have shorter division time
4. Division time depends on cell size only
2. Which phase occupies more than 95% of the cell cycle duration in a human cell?
1. M phase
2. Interphase
3. Prophase
4. Cytokinesis
3. In a cell with initial DNA content of 2C, what would be the DNA content after S phase?
1. C
2. 2C
3. 3C
4. 4C
4. Which tissue undergoes meiotic division in animals?
1. Skin tissue
2. Muscle tissue
3. Germinal tissue
4. Neural tissue
5. If E.coli has a duplication time of 20 minutes, how many minutes will it take for 2 cells to become 32 cells?
1. 80 minutes
2. 100 minutes
3. 120 minutes
4. 140 minutes
6. Which of these represents the correct sequence of mitotic phases?
1. Prophase → Metaphase → Anaphase → Telophase
2. Prophase → Anaphase → Metaphase → Telophase
3. Metaphase → Prophase → Telophase → Anaphase
4. Anaphase → Metaphase → Prophase → Telophase
7. A cell that has exited G1 phase to enter an inactive stage is said to be in:
1. G2 phase
2. G0 phase
3. S phase
4. M phase
8. During which phase of the cell cycle does DNA synthesis occur?
1. G1 phase
2. G2 phase
3. S phase
4. M phase
9. If a tissue has 1024 cells, how many mitotic divisions did the original cell undergo?
1. 8
2. 10
3. 12
4. 16
10. The synaptonemal complex forms during which stage of prophase I of meiosis?
1. Leptotene
2. Zygotene
3. Pachytene
4. Diplotene
11. What is the characteristic feature of metaphase?
1. Chromosomes start condensing
2. Nuclear envelope disappears
3. Chromosomes align at equatorial plate
4. Chromatids separate
12. If an anther has 1200 pollen grains, how many pollen mother cells underwent meiosis?
1. 150
2. 300
3. 450
4. 600
13. During S phase of the cell cycle, where does DNA replication occur in animal cells?
1. Cytoplasm
2. Nucleus
3. Golgi apparatus
4. Mitochondria
14. A cell has 32 chromosomes. After mitotic metaphase, the chromosome number will be:
1. 16
2. 32
3. 64
4. 8
15. Which event occurs during cytokinesis in plant cells?
1. Formation of cleavage furrow
2. Formation of cell plate
3. Direct splitting of cytoplasm
4. Immediate separation of cells
16. During which phase of mitosis do chromosomes lose their identity as discrete elements?
1. Prophase
2. Metaphase
3. Anaphase
4. Telophase
17. Which of these events occurs during G1 phase?
1. DNA replication
2. Chromosome condensation
3. Cell growth and metabolic activity
4. Centromere division
18. The cell that remains arrested in diplotene stage for prolonged periods is:
1. Nerve cell
2. Primary oocyte
3. Muscle cell
4. Skin cell
19. If cytokinesis fails to occur after karyokinesis, the result would be:
1. Cell death
2. Formation of syncytium
3. Immediate cell division
4. Chromosome deletion
20. During which phase does the amount of DNA change from 2C to 4C?
1. G1 phase
2. G2 phase
3. S phase
4. M phase
21. The synaptonemal complex forms during which stage of prophase I of meiosis?
1. Leptotene
2. Zygotene
3. Pachytene
4. Diplotene
22. Which of these represents the correct sequence of mitotic phases?
1. Prophase → Metaphase → Telophase → Anaphase
2. Prophase → Anaphase → Metaphase → Telophase
3. Prophase → Metaphase → Anaphase → Telophase
4. Metaphase → Prophase → Anaphase → Telophase
23. The G0 phase in the cell cycle represents:
1. Active cell division
2. DNA synthesis
3. Quiescent stage
4. Chromosome separation
24. Which of these events marks the onset of anaphase?
1. Nuclear membrane dissolution
2. Chromosome condensation
3. Centromere division
4. Nuclear membrane reformation
25. The duration of M phase in a 24-hour human cell cycle is approximately:
1. 12 hours
2. 6 hours
3. 1 hour
4. 30 minutes
26. During metaphase, chromosomes are attached to spindle fibers by:
1. Centrosomes
2. Kinetochores
3. Nucleolus
4. Nuclear membrane
27. During telophase, which of the following events does NOT occur?
1. Nuclear envelope reforms
2. Chromosomes decondense
3. Spindle fibers disappear
4. Chromosomes align at metaphase plate
28. Which stage of prophase I of meiosis involves the formation of synaptonemal complex?
1. Leptotene
2. Zygotene
3. Pachytene
4. Diplotene
29. The main significance of mitosis in multicellular organisms is:
1. Formation of gametes
2. Genetic recombination
3. Growth and repair of tissues
4. Reduction in chromosome number
30. In a cell with 4 chromosomes undergoing meiosis II, how many chromosomes will be present at metaphase II in each cell?
1. 4 chromosomes
2. 2 chromosomes
3. 8 chromosomes
4. 1 chromosome
31. The metaphase plate refers to:
1. The equatorial arrangement of chromosomes during metaphase
2. The cell plate formed during cytokinesis
3. The nuclear envelope during prophase
4. The synaptonemal complex during meiosis
32. Which of these events distinguishes prophase I of meiosis from mitotic prophase?
1. Chromosome condensation
2. Nuclear envelope breakdown
3. Synapsis of homologous chromosomes
4. Centrosome duplication
33. During which phase does DNA replication occur in the cell cycle?
1. G1 phase
2. G2 phase
3. S phase
4. M phase
34. cytokinesis in plant cells differs from animal cells because:
1. It occurs through furrow formation
2. It involves formation of cell plate
3. It occurs before nuclear division
4. It doesn't occur at all
35. The G0 phase in the cell cycle represents:
1. The synthesis phase
2. The growth phase
3. The quiescent stage
4. The division phase
36. Which statement about meiosis II is correct?
1. It involves DNA replication
2. Homologous chromosomes separate
3. Sister chromatids separate
4. Crossing over occurs
37. The duration of M phase in a 24-hour human cell cycle is approximately:
1. 12 hours
2. 1 hour
3. 6 hours
4. 20 hours
38. A cell having 2n=4 chromosomes after S phase will have:
1. 4 chromosomes and 4C DNA content
2. 8 chromosomes and 4C DNA content
3. 4 chromosomes and 2C DNA content
4. 2 chromosomes and 4C DNA content
39. During which phase of mitosis do the sister chromatids begin moving toward opposite poles?
1. Prophase
2. Metaphase
3. Anaphase
4. Telophase
40. The synaptonemal complex is important for:
1. Chromosome condensation
2. Cytokinesis
3. Crossing over
4. Chromosome segregation
41. Which of these processes occurs during G2 phase?
1. DNA replication
2. Protein synthesis for mitosis
3. Chromosome segregation
4. Cytokinesis
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Selected Qs - Cell Cycle and Cell Division - NCERT Exemplar Converted to MCQsContact Number: 8527521718