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Cell cycle and Cell divisions -1
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1. What is the essential criterium for growth of organisms ?
1 point
(A) Increase in cell mass
(B) Duplication of genetic material
(C) Cell division
(D) Cell degradation
Clear selection
2. Which of the following statement is incorrect for cell cycle ?
1 point
(A) Duplication of cell occurs
(B) Enhance the fertilisation of gamete cells
(C) The period between two successive cell divisions
(D) The series of events that takes place inside a cell
Clear selection
3. Which of the following statement is incorrect for Interphase ?
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(A) Replication of DNA
(B) Duplication of centrioles
(C) Cell size increases
(D) Nuclear division occurs
Clear selection
4. During which phase does chromatin material present ?
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(A) Metaphase
(B) Interphase
(C) Anaphase
(D) Telophase
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5. Which subphase of the following is not of Interphase ?
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(A) G1
(B) division
(C) G2
(D) S
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6. Which of the following is a process of G1 phase ?
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(A) DNA synthesis
(B) Production of micro tubules
(C) Enzyme, RNA, Protein synthesis
(D) All of these
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7. Which of the following is the correct sequence for the Mitosis ?
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(A) G1-S-G2- G2-M
(B)Prophase-metaphase-anaphase-telophase
(C) anaphase-metaphase-telophase
(D)leptotene-zygotene-pachytene-diplotene
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8. Which of the following process is not involved in prophase ?
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(A) the condensation of chromosomes along their lengths
(B) bipolar spindle is developed
(C) nuclear membrane and nucleolus disintegrate
(D) production of equatorial plate
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9. During which phase condensation of chromosomes is completed and they can be seen clearly ?
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(A) Anaphase
(B) Prophase
(C) Metaphase
(D) Telophase
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10. Structures serve as the site of attachment of spindle fibers to the centromere of the chromosomes.
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(A) Kinetochores
(B) Centromere
(C) Metaphase plate
(D) All of these
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11. Which of the following process is involved in anaphase ?
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(A) Chromosome produces equatorial plate.
(B) Chromosome converts into chromatin.
(C)Centromere splits, will separate and start moving to the opposite poles of the cell.
(D)Chromosomes spread in the entire cell area.
Clear selection
12. How does the metaphase differ from anaphase ?
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(A) Chromatids having centromere
(B) For chromatin
(C) Condensation of spindle fibres and the centromere splits and will separate
(D) All of the above.
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13. During which phase of mitosis chromatin network is observed ?
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(A) Anaphase
(B) Metaphase
(C) Prophase
(D) Telophase
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14. Cytokinesis means ......... .
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(A) Last stage of cell division
(B) Stage of duplication of cellular material
(C)a separate process that completes the entire process of cell division
(D) All of these
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15. Syncytium means ......... .
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(A) Cytokinesis
(B) Multinucleate condition
(C) Metaphase plate
(D) Kinetochores
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16.How does cytokinesis begin in higher plants ?
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(A) Separation of the cytoplasm from the centre to the periphery
(B) Separation of the cytoplasm from the periphery to centre region
(C)At any plate
(D) All of these
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17. Select incorrect pair :
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(A) Prophase:Chromosome made up of two charomatids and a centromere holding them together.
(B) Metaphase:Chromosome can be seen clearly.
(C) Anaphase:Chromosome are arranged at the equatorial plate in the middle of the cell.
(D)Telophase:Nuclear membrane, golgi complex are reformed.
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18. Select the correct pair :
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(A) Syncytium-nuclear cell division
(B) Metaphase plate-telophase
(C) Recombination-anaphase
(D) Bipolar spindle-metaphase
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19. A very significant contribution of mitosis is cell repair. Because...
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(A)The number of chromosomes is maintained in all cells.
(B) By asexual reproduction produce two new progeny cells.
(C)The cells of lining of the gut and blood cells are constantly replaced.
(D) Cells can maintain their efficient size.
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20. Which tissue shows mitosis in plants ?
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(A) Meristematic tissue
(B) Complex tissue
(C) Permanent tissue
(D) All of these
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21. Mitotic divisions in result in continuous growth in the plants.
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(A) simple permanent tissue
(B) apical meristematic tissue
(C) lateral meristematic tissue
(D) B and C
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22. By which process the number of chromosomes is maintained in cells ?
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(A) Mitosis
(B) Amitosis
(C) Meiosis
(D) Meiotic division
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23. During cytokinesis middle lamellae is made up of
in Sequoia.
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(A) cellulose
(B) lignin
(C) chitin
(D) pectin
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24.What is formed on both the sides of middle lamella in angiosperm plants ?
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(A) Cytoplasm membrane
(B) Tonoplast
(C) Cell wall
(D) Lipid layer
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25 The formation of syncytium leading because...
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(A)Nuclear cytokinesis is not followed.
(B) Absence of telophase
(C) Karyokinesis is not followed by cytokinesis
(D) Multinucleate condition arises
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26. How many animal cells are reproduced at the end of mitosis ?
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(A) 2
(B) 4
(C) 3
(D) 1
Clear selection
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