NEET Biology Multiple Choice Questions – Cell Cycle And Cell Division

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Cell Cycle And Cell Division Multiple Choice Question and Answers

Question 1. The cell cycle of a somatic cell usually consists of all the following except

  1. The first part of the interphase is called as G1 phase. During this phase, there is a maximum increase in cell size and there is active synthesis of RNA and proteins.
  2. In the synthetic phase (S-phase), the DNA molecule of each chromosome replicates by the synthesis of a new DNA molecule.
  3. During G2-phase, a cell contains double the amount (4n) of DNA present in the original diploid cell (2n).
  4. The cell cycle consists of a short interphase and a long M-phase.

Answer: 4. The cell cycle consists of a short interphase and a long M-phase.

Question 2. Which of the following is the most important point in the regulation of the cell cycle during which it must decide whether the cell will start a new cycle or will become arrested in G0 phase?

  1. S-phase
  2. G1 -phase
  3. G2 -phase
  4. Interphase

Answer: 2. G1 -phase

Question 3. Histone protein synthesis occurs during

  1. G1-phase
  2. G2-phase
  3. S-phase
  4. Prophase

Answer: 3. S-phase

Question 4. The sequence of cell cycle is

  1. S, M, G1 and G2
  2. G1, G2, S, and M
  3. M, G1, G2, and S
  4. G1, S, G2, and M

Answer: 4. G1, S, G2, and M

Question 5. During the cell cycle, DNA replicates

  1. Once
  2. Twice
  3. Many times
  4. Not at all

Answer: 1. Once

Question 6. The synthesis of spindle proteins called as tubulin occurs during

  1. G1-phase
  2. S-phase
  3. G2-phase
  4. M-phase

Answer: 3. G2-phase

Question 7. If a mitotic division is restricted in the G-phase of the cell, the condition is known as

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

Answer: 3. G0-phase

Question 8. The condensation of chromosomes with visible centromere occurs during

  1. G1-phase
  2. S-phase
  3. G2-phase
  4. M-phase

Answer: 4. M-phase

Question 9. The stage of cell cycle when cell has undergone differentiation is

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

Answer: 1. G0

Question 10. The phase of cell cycle when DNA polymerase is active is

  1. G1
  2. S
  3. G2
  4. M

Answer: 2. S

Question 11. The G0-phase of cell denotes

  1. Exit of cell from cell cycle
  2. Checkpoint before entering the next phase
  3. Death of cell
  4. Temporary pause

Answer: 1. Exit of cell from cell cycle

Question 12. During the cell cycle, two molecules of DNA are present in chromosomes during

  1. G1 -phase
  2. Beginning of S-phase
  3. G2-phase
  4. End of M-phase

Answer: 3. G2-phase

Question 13. Antephase is the phase in which ATP is synthesized during cell division. It refers to

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

Answer: 2. G1-phase

Question 14. Which of the following materials you will select to study mitosis?

  1. Anthers
  2. Onion root tips
  3. Flower bud
  4. Pollen

Answer: 2. Onion root tips

Question 15. Mitosis in animal cell is

  1. Anastral
  2. Amphiastral
  3. Premitosis, acentric
  4. Eumitosis acentric

Answer: 2. Amphiastral

Question 16. Mitosis is found in

  1. Lower animals
  2. Higher animals
  3. All plants
  4. All living organisms

Answer: 4. All living organisms

Question 17. Which of the following is the proper sequence in mitosis?

  1. Metaphase, telophase, prophase, and anaphase
  2. Prophase, metaphase, anaphase, and telophase
  3. Anaphase, metaphase, telophase, and prophase
  4. Telophase, anaphase, metaphase, and prophase

Answer: 2. Prophase, metaphase, anaphase, and telophase

Question 18. The chromosome morphology is best studied during

  1. Prophase
  2. Metaphase, as the chromosomes are most condensed
  3. Anaphase, as the chromosomes are most condensed
  4. Telophase

Answer: 2. Metaphase, as the chromosomes are most condensed

Question 19. The two daughter cells formed during mitosis contain

  1. The same amount of DNA but a set of chromosomes different from those of parental cells.
  2. The same amount of DNA and the same set of chromosomes as those of the parent cell.
  3. Half the amount of DNA and the same set of chromosomes as those of the parent cell.
  4. Double the amount of DNA and a set of chromosomes different from those of the parent cell.

Answer: 2. The same amount of DNA and the same set of chromosomes as those of the parent cell.

Question 20. Colchicine is a mitotic poison because it

  1. Causes splitting up of chromosomes
  2. Inhibits the formation of mitotic spindle
  3. Stops the replication of chromosomes
  4. Agglutinates the chromosomes

Answer: 2. Inhibits the formation of mitotic spindle

Question 21. Higher plants differ from animals in having

  1. Spindle microtubule
  2. Anastral mitosis
  3. Kinetochores
  4. Disappearance of nucleolus during prophase

Answer: 2. Anastral mitosis

Question 22. During which phase the centromere splits and chroma¬tids move toward the opposite poles by the shortening of spindle fibers attached to centromeres?

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

Answer: 3. Anaphase

Question 23. The region of the attachment of chromosomes to spindle fibers is called

  1. Centromere
  2. Centriole
  3. Chromonemata
  4. Centrosome

Answer: 1. Centromere

Question 24. Which of the following phases are the longest and shortest in mitosis?

  1. Metaphase, anaphase
  2. Prophase, anaphase
  3. Telophase, anaphase
  4. Prophase, telophase

Answer: 2. Prophase, anaphase

Question 25. The nuclear envelope disappears at

  1. Metaphase
  2. Anaphase
  3. Early prophase
  4. Late prophase

Answer: 4. Late prophase

Question 26. When nuclear division takes place without cytoplasmic division, it results in the formation of

  1. Polyteny
  2. Syncytium
  3. Polyploidy
  4. Amitosis

Answer: 2. Syncytium

Question 27. The cell would normally proceed to mitosis without interruption

  1. When it has entered S-phase
  2. Once it has entered G2 phase
  3. At any time during coil activity
  4. Irrespective of any phase

Answer: 1. When it has entered S phase

Question 28. The term “meiosis” was coined by

  1. Flemming
  2. Farmer and Moore
  3. Strasburger
  4. Hofmeister

Answer: 2. Farmer and Moore

Question 29. Meiosis is significant because it results in

  1. Recombinations
  2. Eggs and sperms
  3. Four daughter cells
  4. Genetically similar daughter cells

Answer: 1. Recombinations

Question 30. All are the essential stages that take place during meiosis, except

  1. Two successive divisions without any DNA replication occurring between them
  2. Formation of chiasmata and crossing over
  3. Segregation of homologous chromosomes
  4. Number of chromosomes in daughter cells after meiosis 2 is reduced to half, but the amount of DNA remains the same

Answer: 4. Segregation of homologous chromosomes

Question 31. Stages in the proper sequence of prophase-1 are

  1. Zygotene, leptotene, pachytene, diakinesis, and diplotene
  2. Leptotene, zygotene, pachytene, diplotene, and diakinesis
  3. Leptotene, zygotene, pachytene, diakinesis, and diplotene
  4. Leptotene, pachytene, zygotene, diakinesis, and diplotene

Answer: 2. Leptotene, zygotene, pachytene, diplotene, and diakinesis

Question 32. The intimate pairing between the two members of each homologous chromosome pair is initiated by the process called as synapsis, leading to bivalent formation, which occurs in

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

Answer: 1. Zygotene

Question 33. Mitosis differs from meiosis in not having

  1. Duplication of DNA
  2. Long prophase
  3. Interphase
  4. Synapsis and crossing over

Answer: 4. Synapsis and crossing over

Question 34. Recombination nodules which mediate for chromosome recombination occur during

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

Answer: 4. Pachytene

Question 35. Crossing over occurs during

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

Answer: 1. Pachytene

Question 36. In oocytes, which of the following phase can last for months or years, since it is at this stage the chromosomes decondense and engage in RNA synthesis?

  1. Diakinesis
  2. Diptotene
  3. Pachytene
  4. Leptolene

Answer: 2. Diptotene

Question 37. In nuclear membrane, nucleoli are distinctly seen in

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

Answer: 4. Interphase

Question 38. In the meiotic cell division, 56 daughter cells are produced by two successive divisions in which

  1. The first division is equational, second is educational
  2. The first division is reductional, and the second is equational
  3. Both divisions are reductional
  4. Both divisions are equational

Answer: 2. First division is reductional, and second is equational

Question 39. The number of chromosomes in the primary oocyte is

  1. Same as that of the secondary oocyte
  2. Half as that of the secondary oocyte
  3. Double as that of the secondary oocyte
  4. Same as that of the ovum

Answer: 3. Double as that of secondary oocyte

Question 40. Personalization is related to

  1. Diakinesis
  2. Meiosis
  3. Mitosis
  4. Diplotene

Answer: 1. Diakinesis

Question 41. Meiosis involves

  1. One nuclear division and one chromosome division
  2. Two nuclear divisions and one chromosome division
  3. One nuclear division and two chromosome divisions
  4. Two nuclear divisions and two chromosome divisions

Answer: 2. Two nuclear divisions and one chromosome division

Question 42. In meiosis, the daughter cells differ from the parent cell as well as amongst themselves due to

  1. Segregation and crossing over
  2. Independent assortment and crossing over
  3. Independent assortment, segregation, and crossing over
  4. Segregation and independent assortment

Answer: 2. Independent assortment and crossing over

Question 43. The movement of homologous chromosomes toward the opposite poles occur by the contraction of spindle fibers during

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

Answer: 2. Anaphase-1

Question 44. In plant cells, cytokinesis occurs by

  1. Cell plate formation
  2. Invagination
  3. Cleavage
  4. Furrowing

Answer: 1. Cell plate formation

Question 45. If the egg of an organism has 10 Pg of DNA in its nucleus, how much DNA would a diploid cell of same organism have in G2-phase of meiosis?

  1. 10 Pg
  2. 5 Pg
  3. 20 Pg
  4. 40 Pg

Answer: 4. 40 Pg

Question 46. The minimum number of meiotic divisions required to produce 100 seeds in Cyperus are

  1. 400
  2. 125
  3. 200
  4. 25

Answer: 3. 200

Question 47. Amitosis includes

  1. Division involving forming of chromosome bridges
  2. Division involving spindle formation
  3. Division in which the chromosomes arc unequally distributed
  4. Cleavage of the nucleus without recognizable chromosome distribution

Answer: 4. Cleavage of the nucleus without recognizable chromosome distribution

Question 48. The nuclear membrane is formed around the groups of daughter chromosomes during telophase by

  1. Endoplasmic reticulum
  2. Golgi apparatus
  3. Lysosomes
  4. Microbodies

Answer: 1. Endoplasmic reticulum

Question 49. How many generations are required by a cell of meristem to produce 256 cells?

  1. 255
  2. 64
  3. 128
  4. 8

Answer: 4. 8

Question 50. To produce 102 pollen grains, how many meiotic divisions are required?

  1. 25
  2. 25.5
  3. 26
  4. 27

Answer: 1. 26

Question 51. Best material for the study of mitosis in the laboratory

  1. Anther
  2. Root tip
  3. Leaf tip
  4. Ovary

Answer: 2. Root tip

Question 52. Mitosis occurs in

  1. Haploid individuals
  2. Diploid individuals
  3. Both 1 and 2
  4. In bacteria only

Answer: 3. Both 1 and 2

Question 53. The number of DNA in chromosomes at G2 state of cell cycle is

  1. One
  2. Two
  3. Four
  4. Eight

Answer: 2. Two

Question 54. Which is correct for meiotic metaphase-1?

  1. Bivalents are arranged at the equator.
  2. Univalents are arranged at the equator.
  3. Non-homologous chromosomes form pairs.
  4. Spindle fibers are attached at the chromomere.

Answer: 1. Bivalents are arranged at the equator.

Question 55. In which stage of meiosis, does the chromosome number reduce to half?

  1. Anaphase-1
  2. Anaphase-2
  3. Telophase-1
  4. Telophase-2

Answer: 1. Anaphase-1

Question 56. Chiasmata are formed as a result of

  1. Exchange of parts of paired homologous chromosomes
  2. Exchange to part of unpaired non-homologous chromosomes
  3. Duplication of parts of paired homologous chromosomes
  4. Loss of parts of unpaired non-homologous chromosomes

Answer: 3. Duplication of parts of paired homologous chromosomes

Question 57. If n = 16 in a plant cell, then how many bivalents in metaphase 1 of meiosis are possible?

  1. 32 bivalents
  2. 16 tetravalent
  3. 16 bivalents
  4. 32 bivalents

Answer: 3. 16 bivalents

Question 58. G2 phase comes between

  1. Satellite
  2. Chromonema
  3. S and D phase
  4. G, and M phase

Answer: 4. G, and M phase

Question 59. Crossing over takes place between

  1. Two sister chromatids
  2. Two non-sister chromatids
  3. Three homologous chromosomes
  4. Four non-homologous chromosomes

Answer: 1. Two sister chromatids

Question 60. The significance of meiosis lies in

  1. Maintaining constancy in the number of chromosomes in an organism
  2. Production of genetic variability in the population of species
  3. Reduction of diploid number of chromosomes to haploid
  4. All of the above

Answer: 2. Production of genetic variability in the population of species

Question 61. Pairing of homologous chromosomes takes place in

  1. Pachytene
  2. Zygotene
  3. Diplotene
  4. None of these

Answer: 4. None of these

Question 62. How many meiotic divisions will be necessary to produce 200 pollen grains?

  1. 100
  2. 99
  3. 50
  4. 200

Answer: 2. 99

Question 63. What is the character of mitosis?

  1. Leptotene
  2. Zygotene
  3. Pachytene
  4. None of the above

Answer: 3. Pachytene

Question 64. Repulsion of homologous chromosomes takes place in

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

Answer: 4. Pachytene

Question 65. Synthesis of DNA takes place in

  1. G1
  2. G2
  3. S
  4. None of these

Answer: 3. S

Question 66. Four daughter cells formed after meiosis are

  1. Genetically similar
  2. Genetically different
  3. Anucleate
  4. Multinucleate

Answer: 3. Anucleate

Question 67. During meiosis, the division of the centromere takes place in

  1. First prophase
  2. First anaphase
  3. Second metaphase
  4. Second anaphase

Answer: 2. First anaphase

Question 68. Bulk of histone proteins are synthesized in

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

Answer: 4. G0 phase

Question 69. The longest phase of meiosis (I) is

  1. Metaphsel-1
  2. Prophase-1
  3. Anaphase-1
  4. Telophase-1

Answer: 3. Anaphase-1

Question 70. Colchicine prevents the mitosis of cells at

  1. Prophase stage
  2. Anaphase stage
  3. Telophase stage
  4. Metaphase stage

Answer: 2. Anaphase stage

Question 71. The number of DNA in chromosomes at G2 stage is

  1. One
  2. Two
  3. Four
  4. Eight

Answer: 4. Eight

Question 72. Synapsis occurs in the _______ phase of meiosis.

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

Answer: 2. Diplotene

Question 73. The significance of meiosis lies in

  1. Reduction of chromosome number to one-half
  2. Maintaining constancy of chromosome number during sexual reproduction
  3. Production of genetic variability
  4. All of the above

Answer: 1. Reduction of chromosome number to one half

Question 74. Chromosomes can be seen best during

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

Answer: 4. Telophase

Question 75. What will be the gametic chromosome number of a cell, if a somatic cell have 40 chromosomes?

  1. 10
  2. 20
  3. 30
  4. 40

Answer: 2. 20

Question 76. In which of the following stages, chromosomes are arranged at the equatorial plate?

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

Answer: 2. Metaphase

Question 77. During mitosis, the number of chromosomes gets

  1. Changed
  2. No change
  3. May be changed if cell is mature
  4. May be changed if cell is immature

Answer: 2. No change

Question 78. In meiosis, chromosome number becomes

  1. Half of its parent chromosome
  2. Same as that of the parent chromosome
  3. One-fourth of its parent chromosome
  4. None of the above

Answer: 2. Same as that of parent chromosome

Question 79. Which one of the following precedes the reformation of the nuclear envelope during the M phase of the cell cycle?

  1. Transcription from chromosomes and reassembly of the nuclear lamina
  2. Formation of the contractile ring and formation of the phragmoplast
  3. Formation of the contractile ring and transcription from chromosome
  4. Decondensation from chromosomes and reassembly of the nuclear lamina

Answer: 1. Transcription from chromosomes and reassembly of the nuclear lamina

Question 80. Crossing over that results in genetic recombination in higher organisms occurs between

  1. Non-sister chromatids of a bivalent
  2. Two daughter nuclei
  3. Two different bivalents
  4. Sister chromatids of a bivalent

Answer: 2. Two daughter nuclei

Question 81. In the somatic cell cycle

  1. DNA replication takes place in S-phase
  2. A short interphase is followed by a long mitotic phase
  3. G2 phase follows the mitotic phase
  4. In G1 phase, DNA content is double the amount of DNA present in the original cell

Answer: 1. DNA replication takes place in S-phase

Question 82. When synapsis is complete all along the chromosome, the cell is said to have entered a stage called

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

Answer: 1. Zygotene

Question 83. Many cells function properly and divide mitotically though they do not have

  1. Plasma membrane
  2. Cytoskeleton
  3. Mitochondria
  4. Plastids

Answer: 2. Cytoskeleton

Question 84. At what stage of the cell cycle are histone proteins synthesized in a eukaryotic cell?

  1. During telophase
  2. During S phase
  3. During G2 stage of prophase
  4. During entire prophase

Answer: 4. During the entire prophase

Question 85. Synapsis occurs between

  1. Two homologous chromosomes
  2. A male and a female gamete
  3. mRNA and ribosomes
  4. Spindle fibers and centromere

Answer: 2. A male and a female gamete

Question 86. Shows a schematic breakup of the phases/stages of the cell cycle.

NEET Biology Cell Cycle And Cell Division Stages Of Cell Cycle

Answer: 3

Question 87. Which one of the following is the correct indication of the state/phase in the cell cycle?

  1. 1—Cytokinesis
  2. 2—Metaphse
  3. 3—Karyokinesis
  4. 4—Synthetic phase

Answer: 4. 4—Synthetic phase

Question 88. During mitosis, ER and nucleolus begin to disappear at

  1. Late prophase
  2. Early metaphase
  3. Late metaphase
  4. Early prophase

Answer: 1. Late prophase

Question 89. Which stages of cell division represent, respectively?

NEET Biology Cell Cycle And Cell Division Stages Of Cell Division

  1. Metaphase—Telophase
  2. Telophase—Metaphase
  3. Late anaphase—Prophase
  4. Prophase—Anaphase

Answer: 3. Late anaphase—Prophase

Question 90. During gamete formation, the enzyme recombinase participates during

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

Answer: 4. Metaphase-1

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