Cell Cycle And Cell Division Multiple Choice Question And Answers

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Cell Cycle And Cell Division Multiple Choice Questions

Question 1. Anaphase Anaphase-promoting complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur?

  1. Chromosomes will be fragmented
  2. Chromosomes will not segregate
  3. Recombination of chromosome arms will occur
  4. Chromosomes will not condense

Answer: 2. Chromosomes will not segregate

Question 2. Which of the following options gives the correct sequence of events during mitosis?

  1. Condensation → nuclear membrane disassembly → arrangement at equator → centromere division → segregation → telophase
  2. Condensation → crossing over → nuclear membrane disassembly → segregation → telophase
  3. Condensation —arrangement at equator → centromere division → segregation → telophase
  4. Condensation → nuclear membrane disassembly → crossing over → segregation → telophase

Answer: 1. Condensation → nuclear membrane disassembly → arrangement at equator → centromere division → segregation → telophase

Question 3. Zygotic meiosis is characteristic of—

  1. Fucus
  2. Funaria
  3. Chlamydomonas
  4. Marchantia

Answer: 3. Chlamydomonas

Read and Learn More WBCHSE Multiple Choice Question and Answers for Class 11 Biology

Question 4. A cell at the telophase stage is observed by a student in a plant brought from the field. He tells his teacher that this cell is not like other cells. telophase stage. There is no formation of a cell plate and thus the cell contains more chromosomes as compared to the other dividing cells. This would result in —

  1. Polyploidy
  2. Somaclonal variation
  3. Polyteny
  4. Aneuploidy

Answer: 1. Polyploidy

Question 5. Which of the following is. not a characteristic feature during mitosis in somatic cells?

  1. Disappearance of nucleolus
  2. Chromosome movement
  3. Synopsis
  4. Spindle fibres

Answer: 3.

Question 6. In meiosis, crossing over is initiated at—

  1. Leptotene
  2. Zygotene
  3. Diplotene
  4. Pachytene

Answer: 2. Zygotene

Question 7. Which of the following statements is not true for cancer cells in relation to mutations?

  1. Mutations destroy telomerase inhibitor
  2. Mutations inactivate the cell control
  3. Mutations inhibit the production of telomerase
  4. Mutations in proto-oncogenes accelerate the cell cycle

Answer: 3. Mutations inhibit the production of telomerase

Question 8. During cell growth, DNA synthesis takes place in—

  1. S phase
  2. G2 phase
  3. G2 phase
  4. M phase

Answer: 1. S phase

Question 9. When a cell has stalled the DIMA replication fork, which checkpoint should be predominantly activated?

  1. G-l/S
  2. G2/M
  3. M
  4. Both G2/M and M

Answer: 1. G-l/S

Question 10. Match the stages of meiosis in column 1 to their characteristic features in column 2 and select the correct option using the codes given below:

Biology Class 11 Chapter 8 Cell Cycle And Cell Division Match the Columns Question 10

  1. 1-3,2-4,3-2,4-1
  2. 1-1,2-4,3-2,4-3
  3. 1-2,2-4,3-3,4-1
  4. 1-4,2-3,3-2,4-1

Answer: 1. 1-3,2-4,3-2,4-1

Question 11. Arrange the following events of meiosis in the correct sequence—

  1. Crossing over
  2. Synapsis
  3. Terminalisation of chiasmata
  4. Disappearance of nucleolus

Choose the correct opition 

  1. 2, 3, 4, 1
  2. 2, 1, 4, 3
  3. 2, 1, 3, 4
  4. 1, 2, 3, 4

Answer: 3. 2, 1, 3, 4

Question 12. During which phase(s) of the cell cycle, does the amount of DNA in a cell remain at 4C level if the initial amount is denoted as 2C?

  1. G0 and G1
  2. G1 and S
  3. Only G2
  4. G2 and M

Answer: 3. Only G2

Question 13. In the S phase of the cell cycle—

  1. The amount of dna doubles in each cell
  2. The amount of dna remains the same in each cell
  3. Chromosome number is increased
  4. The amount of dna is reduced to half in each cell

Answer: 1. The Amount of dna doubles in each cell

Question 14. The enzyme recombinase is required at which stage of meiosis?

  1. Pachytene
  2. Zygotene
  3. Diplotene
  4. Diakinesis

Answer: 1. Pachytene

Question 15. Select the correct statement related to mitosis—

  1. Amount of DNA in the parent cell is first halved and then distributed into two daughter cells
  2. Amount of DNA in the parent cell is first doubled and then distributed into two daughter cells
  3. Amount of DNA in the parent cell is first halved and then distributed into four daughter cells
  4. Amount of DNA in the parent cell is first doubled and then distributed into four daughter cells

Answer: 2. Amount of DNA in the parent cell is first doubled and then distributed into two daughter cells

Question 16. Average duration of cell cycle of a human cell is—

  1. 12 h
  2. 16 h
  3. 20 h
  4. 24 h

Answer: 2. 16 h

Question 17. Mattch the following Coloumns:

Biology Class 11 Chapter 8 Cell Cycle And Cell Division Match THe Coloumns Question 17

  1. 1-3,2-5,3-1,4-2
  2. 1-5,2-4,3-1,4-3
  3. 1-5,2-1,3-4,4-2
  4. 1-5,2-2,3-3,4-4

Answer: 3. 1-5,2-1,3-4,4-2

Question 18. Males produce sperm by mitosis in

  1. Periplaneta americana
  2. Apis mellifera
  3. Drosophila melanogaster
  4. Lepisma sp.

Answer: 2. Apis mellifera

Question 19. The centrosome duplicates during the—

  1. S phase of cell cycle
  2. G2 phase of cell cycle
  3. G2 phase of cell cycle
  4. Prophase of cell cycle

Answer: 1. S phase of cell cycle

Question 20. The correct sequence of the sub-stages of

  1. Diakinesis → Pachytene → Diplotene → Zygotene → Leptotene
  2. Leptotene → Zygotene → Pachytene → Diplotene → Diakinesis
  3. Pachytene → Diplotene → Diakinesis → Dioplotene → Diakinesis
  4. Leptotene → Zygotene → Diplotene → Diakinesis → Pachytene

Answer: 2. Leptotene → Zygotene → Pachytene → Diplotene → Diakinesis

Question 21. What are the spindle fibres that connect the centromere of chromosome to the respective poles called?

  1. Astral rays
  2. Interpolar fibres
  3. Chromosomal fibres
  4. Inter chromosomal fibres

Answer: 1. Astral rays

Question 22. During which stage of prophase-l genetic recombination of parental characters, takes place?

  1. Zygotene
  2. Pachytene
  3. Diplotene
  4. Diakinesis

Answer: 2. Pachytene

Question 23. Which of the following ions are necessary for the assembly of microtubules?

  1. Na+ and K+
  2. Ca2+ and Cl-
  3. Ca2+ and Mg2+
  4. Na+ and C2+

Answer: 3. Ca2+ and Mg2+

Question 24. Which one of the following is the best stage to observe the shape, size and number of chromosomes in a cell?

  1. Interphase
  2. Prophase
  3. Metaphase
  4. Telophase

Answer: 3. Metaphase

Question 25. A stage in cell division is shown in the figure. Select the answer which gives correct identification of the stage with its characteristics?

  1. Telophase-Nuclear envelope reforms, Golgi complex reforms
  2. Late anaphase-Chromosomes move away from equatorial plate, Golgi complex not present
  3. Cytokinesis-Cell plate formed, mitochondria distributed between two daughter cells
  4. Telophase-Endoplasmic reticulum and nucleolus not reformed yet

Answer: 1. Telophase-Nuclear envelope reforms, Golgi complex reforms

Question 26. Meiosis takes place in

  1. Meiocyte
  2. Conidia
  3. Gemmule
  4. Megaspore

Answer: 1. Meiocyte

Question 27. During the cell cycle, RNA and non-histone proteins are synthesised in—

  1. S phase
  2. G0 Phase
  3. G2 Phase
  4. M Phase

Answer: 3. G2 Phase

Question 28. During the cell cycle, RNA and non-histone proteins are synthesised in—

  1. G1 phase
  2. G2 Phase
  3. S Phase
  4. G0 Phase

Answer: 3. S Phase

Question 29. During the cell cycle, RNA and non-histone proteins are synthesised in—

  1. Homotypic without cytokinesis
  2. Reductional without cytokinesis
  3. Somatic followed by cytokinesis
  4. Meiotic followed by cytokinesis

Answer: 1. Homotypic without cytokinesis

Question 30. Chromatid formation takes Place in

  • S Phase
  • Metaphase
  • G1 phase
  • G2 Phase

Answer: 1. S Phase

Question 31. 56 Cells Are Produced in meiosis is-

  1. Equal
  2. Reduction
  3. Mitosis
  4. None Of these

Answer: 2. Reduction

Question 32.  Longest phase of meiosis—

  1. Prophase-1
  2. Prophase-2
  3. Anaphase-1
  4. Metaphase-2

Answer: 1. Prophase-1

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