10 Cell Cycle and Cell Division Past Paper Questions PDF

1. The growth and reproduction of all organisms depend on 9. The cells that do not divide further exit G1 phase and a. The division of cells and tissues enter an inactive stage called b. The division and enlargement of cells a....

1. The growth and reproduction of all organisms depend on 9. The cells that do not divide further exit G1 phase and a. The division of cells and tissues enter an inactive stage called b. The division and enlargement of cells a. Quiescent (G0) stage b. G2 phase c. The division & enlargement of cells and tissues c. Synthetic (S) phase d. Early prophase d. The enlargement of cells 10. The cells that do not show division are 2. Duration of cell cycle in a typical eukaryotic cell such as a. Epithelial cells, heart cells and megakaryocytes human cell is about b. Neurons, skeletal and cardiac muscle cells a. 24 minutes b. 90 minutes c. Neurons, bone marrow cells and muscle cells c. 24 hours d. 90 hrs d. Hemocytoblasts, heart cells and epithelial cells 3. The two basic phases of cell cycle are 11. Given below are some statement regarding mitosis a. Mitosis & meiosis Select the wrong one. b. Mitosis & Interkinesis a. It is the cell division occurring in somatic cells c. Interphase & M phase b. It is also called as equational division as the d. G1 and G2 phase number of chromosomes in the parent and 4. The phase between two successive M phases is called progeny cells is same. a. G1 phase b. Antephase c. It occurs only in diploid cells. c. Karyokinesis d. Interphase d. It helps to retain the same chromosome number 5. Three phases involved in interphase are in all somatic cells. a. G1 phase, S phase, G2 phase 12. The correct sequence of stages in karyokinesis is b. G1 phase, G2 phase, M phase a. Metaphase, Prophase, Telophase & Anaphase c. G1 phase, karyokinesis, cytokinesis b. Prophase, Metaphase, Anaphase & Telophase d. G1 phase, S phase, M phase c. Telophase, Prophase, Anaphase & Metaphase 6. Select the false statement d. Anaphase, Prophase, Telophase & Metaphase a. Interphase lasts more than 95% of the duration 13. The longest and shortest phases in mitosis is of cell cycle a. Prophase and Anaphase respectively b. Interphase includes cell division & DNA b. Metaphase and Telophase respectively synthesis c. Anaphase and Prophase respectively c. S phase is the second phase of interphase and is d. Telophase and Metaphase respectively the longest phase 14. In animal cells, during S phase, DNA replication begins d. In both G1 & G2 phases, synthesis of RNA and in the ------ and the centriole duplication in the ------ proteins occurs a. Nucleus, cytoplasm b. Nucleus, nucleus 7. Which is correctly labelled? c. Cytoplasm, nucleus d. Cytoplasm, cytoplasm 15. Match the following A B A. Prophase 1. Chromosomes at equator B. Metaphase 2. Uncoiling of chromosomes C. Anaphase 3. Condensation of chromosomes 4. Chromatids move to opposite D. Telophase poles A B C D a. 2 3 4 1 b. 4 3 2 1 c. 3 4 1 2 a.A= G1 phase B= S phase C= G0 phase d. 3 1 4 2 D= G2 phase E= M phase 16. Which of the following does not occur during late b. A= G0 phase B= S phase C= G1 phase prophase? D= G2 phase E= M phase a. Each chromosome splits into two chromatids c. A= M phase B= G0 phase C= G1 phase attached together at the centromere D= S phase E= G2 phase b. The nuclear envelope, nucleolus, Golgi d. A= G0 phase B= G1 phase C= S phase complexes & endoplasmic reticulum disappear D= G2 phase E= M phase c. Chromosomes form two sister chromatids 8. Which of the following represents actual cell division? d. Condensation of chromosomes continues a. G1 phase b. S phase 17. In animal cells, during late prophase, the centrioles c. G2 phase d. M phase a. Move to opposite poles and radiate out astral rays 1  b. Move to equator and radiate out astral rays a. The vesicles formed from Golgi bodies c. Move to equator and radiate out spindle fibres accumulate at the equator d. Move to opposite poles and start uncoiling of b. Cell plate is formed chromosomes c. A cleavage furrow is appeared in the plasma 18. Regarding prophase membrane 1. Prophase is the first stage of mitosis d. The cell plate becomes the middle lamella 2. Prophase follows S and G2 phases of interphase 25. Meiosis occurs during 3. Prophase is marked by the initiation of condensation a. Gametogenesis b. Body growth of chromosomal material. c. Tissue repair d. Crossing over 4. The centriole which had undergone duplication 26. Which of the following is not the key feature of meiosis? during S phase of interphase, now begins to move a. It involves pairing of homologous chromosomes towards opposite poles of the cell and recombination between them. a. All are correct statements b. It involves two cycles of DNA replication and b. Only 1,3 are correct statements cell division. c. Only 2,4 are correct statements c. Meiosis I begins after replication of parental d. Only 1,2,3 are correct statements chromosomes to form identical sister 19. The spindle fibres disappear during chromatids at the S phase a. Prophase b. Metaphase d. Four haploid cells are formed at the end of c. Anaphase d. Telophase meiosis II 20. The figure given below represents 27. Choose the correct sequence of events of Prophase I? a. Zygotene, Leptotene, Diplotene, Pachytene & Diakinesis b. Pachytene, Diplotene, Leptotene, Zygotene & Diakinesis c. Diplotene, Leptotene, Zygotene, Pachytene & Diakinesis a. Transition to late Prophase d. Leptotene, Zygotene, Pachytene, Diplotene & b. Transition to Metaphase Diakinesis c. Transition to Anaphase 28. Match the following d. Transition to Telophase A B 21. Which of the following options gives the correct A. Leptonema 1. Fully condensed chromosomes sequences of events during mitosis? B. Zygonema 2. Crossing over a. Condensation → nuclear membrane disassembly C. Pachynema 3. Synapsis → crossing over → segregation → telophase D. Diplonema 4. Long slender chromosomes E. Diakinesis 5. Chiasmata b. Condensation → nuclear membrane disassembly → arrangement at equator → centromere A B C D E division → segregation → telophase a. 2 3 5 1 4 c. Condensation → crossing over → nuclear b. 4 3 2 5 1 c. 5 4 1 2 3 membrane disassembly → segregation → d. 3 1 4 5 2 telophase 29. During zygotene, similar chromosomes start pairing d. Condensation → arrangement at equator → together. It is called centromere division → segregation → telophase a. Crossing over b. Recombination 22. Which of the following is not the significance of mitosis? c. Synapsis d. Diakinesis a. It produces diploid daughter cells with identical 30. Each pair of homologous chromosomes is called a genome a. Bivalent b. Tetrad b. It helps to retain the same chromosome number c. Chiasmata d. Diad in all somatic cells 31. Crossing over is c. It restores the nucleo-cytoplasmic ratio that a. The pairing of homologous chromosomes with disturbed due to cell growth the help of a complex structure called d. It causes genetic variation due to crossing over synaptonemal complex. in the population of organisms b. The exchange of genetic material between sister 23. Cytokinesis in plant cell is different from animal cell due chromatids of a chromosomes in presence of to the presence of recombinase. a. Large vacuole b. Cell wall c. The pairing of non-homologous chromosomes c. Chloroplasts d. All of these with the help of a complex structure called 24. Which is not occurring in cytokinesis of plants? synaptonemal complex. 2  d. The exchange of genetic material between non- d. One in mitosis and two in meiosis sister chromatids of two homologous 37. Total number of reproductive cells required for the chromosomes in presence of recombinase. formation of 128 gametes in man is 32. Kinetochore is located in a. 32 b. 64 c. 16 d. 128 a. Centriole b. Centromere 38. Match the following c. Chromatids d. Lysosome Column A Column B 33. Recombination is completed by the end of 1 Mitosis in plants a Inner cheek cells a. Zygotene b. Pachytene 2 Meiosis in plants b Grasshopper testis c. Diplotene d. Diakinesis 3 Mitosis in animals c In plants 34. This short stage between the two meiotic divisions is 4 Meiosis in animals d Onion root tip called 5 Cell plate formation e In animals a. Interphase b. Antephase Inhibits spindle fibres c. Interkinesis d. Cytokinesis 6 Cleavage furrow f leads to polyploidy 35. “Thin threaded” stage refers to Young flower buds in a. Leptotene b. Zygotene 7 Colchicine g tradescantia c. Pachytene d. Diplotene a. 1-a, 2-b, 3-c, 4-d, 5-e, 6-f, 7-g 36. Number of chromatids at metaphase is b. 1-d, 2-g, 3-c, 4-e, 5-b, 6-a, 7-f a. Two each in mitosis and meiosis c. 1-d, 2-g, 3-a, 4-b, 5-c, 6-e, 7-f b. Two in mitosis and one in meiosis d. 1-d, 2-g, 3-a, 4-e, 5-c, 6-f, 7-b c. Two in mitosis and four in meiosis >> Answer Key: Click Here 👉 Want Other Chapters? 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