InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which is not characteristic of telophase 1. Chromatin condenses to form chromosomes. 2. Nucleolus, Golgi comlex and ER reform 3. Nuclear envelopes assemble around chromosome clusters 4. Centromeres split and chromatids separate 5. Chromosome clusters and their identity is lost.A. 1, 2, 4 onlyB. 1, 4 onlyC. 2, 3 onlyD. 3, 4, 5 only |
| Answer» Correct Answer - B | |
| 2. |
What precedes reformation of nuclear envelope in M-phaseA. Decondensationo of chromosomes and appearance of nuclear laminaB. Transcription of chromosomes and reassembly of nuclear laminaC. Formation of phragmoplast and contraction ringD. Formation of contraction ring and transcription from chromosomes |
| Answer» Correct Answer - A | |
| 3. |
Synaptinemal complex was first described byA. MosesB. BowmannC. MontgomeryD. Pfitzner. |
| Answer» Correct Answer - A | |
| 4. |
In which stage synaptinemal complex dissolves, chromaties become clear and bivalents are called tetradsA. ZygoteneB. PachyteneC. DiploteneD. Diakinesis |
| Answer» Correct Answer - C | |
| 5. |
The term synaptonemal complex refers to site ofA. Spindle attachmentB. ReplicationC. Chromatid separationD. Chromosomeo alignment and recombination |
| Answer» Correct Answer - D | |
| 6. |
Synaptonemal complex is formed duringA. LeptoteneB. PachyteneC. DiakinesisD. Zygotene |
| Answer» Correct Answer - D | |
| 7. |
In mitosis, nuclear envelope and nucleolus disappear duringA. ProphaseB. InterphaseC. MetaphaseD. Telophase |
| Answer» Correct Answer - A | |
| 8. |
Which stages of cell division do the following figures A and B represent respectively A. Telophase-MetaphaseB. Late Anaphase-ProphaseC. Prophase-AnaphaseD. Metaphase-Telophase |
| Answer» Correct Answer - B | |
| 9. |
During mitosis ER and nucleolus begin to disappear atA. Early metaphaseB. Late metaphaseC. Early prophaseD. Late prophase |
| Answer» Correct Answer - D | |
| 10. |
Choose the diagram which correctly depicts anaphase IA. B. C. D. |
| Answer» Correct Answer - D | |
| 11. |
When a cell undergoes meiosis, the number of chromosomes in daughter cells will beA. Reduced to halfB. Increased to doubleC. Remains unchangedD. Distributes unequally |
| Answer» Correct Answer - A | |
| 12. |
Meiosis II fails after completion of meiosis I. The phenomenon isA. BrachymeiosisB. DinomitosisC. KarvokinesisD. None of the above |
| Answer» Correct Answer - D | |
| 13. |
Cyclin is required for cell cycle. Which other molecule is essential for completion of cell cycle ?A. C CKB. CKCC. CDKD. CKD |
| Answer» Correct Answer - C | |
| 14. |
During meiosis, replication of chromosomes occurs inA. S-phaseB. S-phase and zygoteneC. S-phase and leptoteneD. All the above |
| Answer» Correct Answer - B | |
| 15. |
Cyclin is associated with which one of the following Or Diploid living organism develops from zygote by repeated cell divisions is calledA. CyclosisB. MitosisC. GlycolysisD. Haemolysis |
| Answer» Correct Answer - B | |
| 16. |
If the diploid number of chromodomes is 40, then number of chromosome in gemete will be :A. 40B. 20C. 10D. 30 |
| Answer» Correct Answer - B | |
| 17. |
A diploid living organism develops from zygote by repeatedA. MeiosisB. MitosisC. AmitosisD. Segmentation |
| Answer» Correct Answer - B | |
| 18. |
Crossing over in diploid organisms is responsible forA. Segregation of allelesB. Dominance of allelesC. Recombination of linked allelesD. Linkage between genes |
| Answer» Correct Answer - C | |
| 19. |
Chitin isA. Insoluble in waterB. Resistant to acids and alkaliesC. Insoluble in most organic solventsD. All the above |
| Answer» Correct Answer - D | |
| 20. |
Carbomethylchitosan is modified form of chitin which isA. Non-toxicB. Soluble and biodegradableC. Both A and BD. Extremely toxic and non-biodegradable. |
| Answer» Correct Answer - C | |
| 21. |
The enzyme recombinase is required in which stage of meiosis ?A. ZygoteneB. DiploteneC. DiakinesisD. Pachytene |
| Answer» Correct Answer - D | |
| 22. |
In pachytene satage of meiosis the chromosomes appearA. Single strandedB. Double strandedC. Three strandedD. Four stranded |
| Answer» Correct Answer - A | |
| 23. |
Pachytene belongs toA. MitosisB. MeiosisC. Growth of cellD. Development of endosperm |
| Answer» Correct Answer - B | |
| 24. |
Arrange the following events of meiosis in correct sequence (a) Crossing over (b) Synapsis `(c)`Terminalisation of chiasmata (d) Disappearance of nucleolus.A. b,a,d,cB. b,a,c,dC. a,b,c,dD. b,c,d,a |
| Answer» Correct Answer - B | |
| 25. |
Assertion (A). Events in pachytene play a key role in evolutionary changes in organisms Reason`(R)`.Exchange of genetic material takes place between sister chromatids of homologous chromosomesA. A and R are true, R is corret explanation of AB. Both A and R are true, R is not the correct explanation of AC. A is true, R is falseD. A is false, R is true. |
| Answer» Correct Answer - C | |
| 26. |
Find the correct match `{:((a),"Anaphase I",(i),"Splitting of the centromere",),((b),"Anaphase II",(ii),"Recombinase",),((c),"Pachytene",(iii),"Sister chromatids associated at their centromeres",),((d),"Diakinesis",(iv),"Chromosomes aligned on the equatorial plate",),(,,(v),"Nucleolus disappears",):}`A. a-iii, b-i, c-ii, d-vB. a-iii, b-v, c-ii, d-ivC. a-ii, b-iii, c-v, d-ivD. a-i, b-iii, c-iv, d-ii |
| Answer» Correct Answer - A | |
| 27. |
What are spindle fibres that connect the centromere to respective poles calledA. Astral raysB. Interphase fibresC. Chromosomal fibresD. Interchromosomal fibres |
| Answer» Correct Answer - C | |
| 28. |
If a tissue has at a given time 1024 cells, how many cycles of mitosis had the original paraental single cell undergone?A. 8B. 10C. 32D. 64 |
| Answer» Correct Answer - B | |
| 29. |
Which substance is used to keep cells in metaphase stage of mitosis in blood culture techniqueA. CholecystokininB. ChitinC. ColchicineD. Phytohaemoglobin |
| Answer» Correct Answer - C | |
| 30. |
In meiosis, the centromere divides duringA. Anaphase IB. Anaphase IIC. Both A and BD. Metaphase II |
| Answer» Correct Answer - B | |
| 31. |
A cell at telophase stage is observed by a student in a plant brought from a field. He tells his teacher that this cell is not like other cells at telophase stage. There is no formation of cell plate and thus the cell containing more number of chromosomes as compared to other dividing cells. This would result inA. PolytenyB. AneuploidyC. PolyploidyD. Somaclonal variation. |
| Answer» Correct Answer - C | |
| 32. |
What is not seen during mitosis in somatic cellsA. SynapsisB. Spindle fibresC. Disappearance of nucleolusD. Chromosome movement. |
| Answer» Correct Answer - A | |
| 33. |
Which of the following option gives the correct sequence of events during mitosisA. Condensation `to` Nuclear membrane disassembly `to` crossing over `to` Segregation `to` TelophaseB. Condensation `to` Nuclear membrane disassembly `to` Arrangement at equator `to` Centromere division `to` Segregation `to` TelophaseC. Condensation `to` Crossing over `to` Nuclear membrane disassembly `to` Segregation `to` TelophaseD. Condensation `to ` Arrangement at equator `to` Centromere division `to` Segregation `to` Telophase. |
| Answer» Correct Answer - B | |
| 34. |
Anaphase promoting complex (APC) is a protein degrading machinery necessary for proper mitosis of animal cells. If APC is defeetive in a human cell, which of the following is expected to occurA. Chromosomes will not condenseB. Chromosomes will not fragmentedC. Chromosomes will not segregateD. Recombination of chromosome arms will occur. |
| Answer» Correct Answer - C | |
| 35. |
Which of the following phases correspond to the interval between mitosis and initiation of DNA replicationA. S-phaseB. `G_(1)-"phase"`C. `G_(2)-"phase"`D. M-phase |
| Answer» Correct Answer - B | |
| 36. |
The process of mitosis can be studied inA. Onion root tipB. Garlic root tipC. Tendril tipD. All the above |
| Answer» Correct Answer - D | |
| 37. |
Colchicine isA. Mitotic poisonB. Prophase poisonC. Cytokinesis poisonD. None of the above |
| Answer» Correct Answer - A | |
| 38. |
Colchicine results in doubling of chromosome number because ofA. Splitting of chromosomesB. Non-pairing of chromosomesC. Double replication of chromosomesD. Non-formation of spindle |
| Answer» Correct Answer - D | |
| 39. |
Which one ensures maintenance of chromosome number generation after generation ?A. MitosisB. MeiosisC. SplicingD. Metamorphosis |
| Answer» Correct Answer - B | |
| 40. |
Cell division is initiated byA. CytokininB. AuxinC. GibberellinD. ABA |
| Answer» Correct Answer - A | |
| 41. |
Colchicine is a cell pison which arrests cell division at __ and can induce ___A. ProphaseB. MetaphaseC. AnaphaseD. Interphase |
| Answer» Correct Answer - B | |
| 42. |
Spectroscopy useful for gas analysis isA. Absorption spectroscopyB. Infra-red spectroscopyC. Emission spectroscopyD. Nuclear magnetic resonance spectroscopy |
| Answer» Correct Answer - B | |
| 43. |
Synapsis of homologous chromosomes was first observed byA. WiniwaterB. MontgomeryC. JohannsenD. Zickler |
| Answer» Correct Answer - B | |
| 44. |
The homologous chromosomes follow the process of synapsis in the stage or Pairing of homologous chromosome takes place in Or During which stage of meiosis, synaptonemal complex is formedA. DiploteneB. PachyteneC. ZygoteneD. Leptotene |
| Answer» Correct Answer - C | |
| 45. |
In synapsis, two homologous chromosomes are connected atA. CentromeresB. ChromomeresC. TelomeresD. None of the above |
| Answer» Correct Answer - B | |
| 46. |
In which stage of cell division chromosomes are most condensedA. ProphaseB. MetaphaseC. AnaphaseD. Telophase |
| Answer» Correct Answer - B | |
| 47. |
Pick up the correct statement : (a) Synapsis of homologous chromosomes occurs during prophase I (b) Division of centromeres takes place during anaphase I`(c)`Spindle fibres disappear completely in telophase of mitosis (d) Nucleoli mey reappear in telophase IA. a onlyB. c onlyC. a and b onlyD. a, c and d only |
| Answer» Correct Answer - D | |
| 48. |
At what stage does the number of chromosomes become half ?A. Prophase IB. Metaphase IC. Anaphase ID. Telophase I |
| Answer» Correct Answer - C | |
| 49. |
The stage in which chiasmata can be seen isA. LeptoteneB. ZygoteneC. PachyeneD. Diakinesis |
| Answer» Correct Answer - D | |
| 50. |
Arrange the following events of meiosis in correct sequence ? 1.Terminalisation , 2. Crossing over 3. Synapsis , 4. DisjunctionA. 4,3,2,1B. 3,2,1,4C. 2,1,4,3D. 1,4,3,2 |
| Answer» Correct Answer - B | |