Cell Cycle and Cell Division - NCERT Based MCQ Questions for NEET

This article contains NCERT based 45 MCQ questions test on Biology chapter "Human Health and Disease". These questions are highly valuable for the NEET exam. You can attempt these questions in the form of an interactive quiz and calculate your score. Read the below quiz rules carefully before you start

General Instructions

• Quiz contains 45 questions of 4 marks each.
• Correct answer (✔) will award you +4 marks and Incorrect answer (✘) will give you -1 mark.
• Total test is of 180 marks.
• Tap on box in order to select any option that you think is correct.
• Press the Submit button given in the end of quiz to calculate your score.
• There is a PDF file attached in the end of quiz. You can see detailed solutions to all questions and do self analysis from that file as well. 

Question 1. Compare the statements A and B
Statement A: Synthesis of DNA takes place in the S-phase of interphase.
Statement B: Every chromosome, during metaphase, has two chromatids.
Choose the correct description:

(1) Both the statements A and B are correct and A is the reason for B.
(2) Both the statements A and B are correct and A is not the reason for B.
(3) Statement A is wrong and B is correct.
(4) Statement A is correct and B is wrong.

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Question 2. Mitotic stages are not observed in –

(1) Cosmarium
(2) E. coli
(3) Saccharomyces
(4) Chlorella

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Question 3. Visible expression of the genetic phenomenon of crossing over is called –

(1) Chiasmata
(2) Spiralization
(3) Recombination
(4) Condensation

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Question 4. A bivalent of meiosis I consist of

(1) Four chromatids and two centromeres.
(2) Two chromatids and one centromere.
(3) Two chromatids and two centromeres.
(4) Four chromatids and four centromeres.

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Question 5. Statement A: For a particular character in an individual, each gamete gets only one allele.
Statement B: Chromatids of a chromosome split (separate) and move towards opposite pole during anaphase of mitosis.

(1) Both the statements are correct and B is the reason for A.
(2) Both the statements are correct and B is not the reason for A.
(3) Statement A is correct and statement B is wrong.
(4) Statement B is correct and statement A is wrong.

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Question 6. The centrosome duplicates during the

(1) S-phase of cell cycle
(2) G₁-phase of cell cycle
(3) G₂-phase of cell cycle
(4) Prophase of cell cycle

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Question 7. What is the function of the enzyme ‘recombinase’ during meiosis?

(1) Condensation of chromosomes
(2) Formation of synaptonemal complex
(3) Alignment of bivalent chromosomes on equatorial plate
(4) Crossing over between non-sister chromatids

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Question 8. Meiosis results in

(1) Production of gametes
(2) Reduction in the number of chromosomes
(3) Introduction of variation
(4) All of the above

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Question 9. At which stage of meiosis does the genetic constitution of gametes is finally decided?

(1) Metaphase I
(2) Anaphase II
(3) Metaphase II
(4) Anaphase I

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Question 10. Meiosis occurs in organisms during

(1) Sexual reproduction
(2) Vegetative reproduction
(3) Both sexual and vegetative reproduction
(4) None of the above

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Question 11. Mitosis is characterised by

(1) Reduction division
(2) Equal division
(3) Both reduction and equal division
(4) None of the above

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Question 12. Cells which are not dividing are likely to be at

(1) G₁
(2) G₂
(3) G₀
(4) S phase

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Question 13. Which of the events listed below is not observed during mitosis?

(1) Chromatin condensation
(2) Movement of centrioles to opposite poles
(3) Appearance of chromosomes with two chromatids joined together at the centromere.
(4) Crossing over

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Question 14. Identify the wrong statement about meiosis

(1) Pairing of homologous chromosomes
(2) Four haploid cells are formed
(3) At the end of meiosis the number of chromosomes are reduced to half
(4) Two cycles of DNA replication occurs

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Question 15. Select the correct statement about G₁ phase

(1) Cell is metabolically inactive
(2) DNA in the cell does not replicate
(3) It is not a phase of synthesis of macromolecules
(4) Cell stops growing

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Question 16. Select the incorrect statement regarding S phase of interphase.

(1) Occurs between G₁ and G₂
(2) DNA replicates in the nucleus
(3) Centrioles duplicate in the cytoplasm
(4) As DNA is doubled, number of chromosomes also doubles

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Question 17. Human cells in culture show a cell cycle to be completed in approximately

(1) 42 hours
(2) 24 hours
(3) 24 minutes
(4) 24 seconds

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Question 18. Yeast cell divides once in approximately every

(1) 90 minutes
(2) 9 minutes
(3) 24 hours
(4) 24 days

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Question 19. Which one is the correct sequence of a cell cycle?

(1) G₂ → M → G₁ → S
(2) S → G₂ → M → G₁
(3) G₁ → S → G₂ → M
(4) M → G₁ → S → G₂

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Question 20. The cells that do not divide further, exit G₁ phase to enter an inactive stage called ____ of the cell cycle.

(1) G₁ stage
(2) G₂ stage
(3) S stage
(4) G₀ stage

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Question 21. Which typical stage is known for DNA replication?

(1) Metaphase
(2) G₁-phase
(3) S-phase
(4) G₂-phase

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Question 22. Synthesis of histone proteins occurs in

(1) G₁ phase
(2) S phase
(3) Anaphase
(4) G₀ phase

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Question 23. One cycle of cell division in human cells takes 24 hours. Which phase occupies the maximum part of cell cycle?

(1) Mitotic phase
(2) Meiotic phase
(3) Interphase
(4) Cytokinesis

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Question 24. The DNA content of individual cells and the number of cells in each phase of a cell cycle can be determined using flow cytometry. Which of the following combinations of phase of a cell cycle and its corresponding DNA content can be considered normal?
(i) Diploid cells found in the G₀ or G₁ phase.
(ii) Cells with twice the normal DNA content in the early M phase.
(iii) Cells with intermediate amounts of DNA in the S phase.
(iv) Cells with twice the normal DNA content in the G₂ phase.

(1) (i) and (ii)
(2) (ii) and (iii)
(3) (iii) and (iv)
(4) (i), (ii), (iii) and (iv)

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Question 25. _______ is the best stage to count the number and study the morphology of chromosomes.

(1) Prophase
(2) Metaphase
(3) Anaphase
(4) Telophase

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Question 26. At which stage of mitosis, the two daughter chromatids separate from each other, migrate towards the opposite poles and are now referred to as chromosomes of the future daughter nuclei?

(1) Prophase
(2) Metaphase
(3) Anaphase
(4) Telophase

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Question 27. During anaphasic movements of chromosomes, ____ of each chromosome is/are towards the pole and ____ of the chromosome trail(s) behind.

(1) Centromere, arms
(2) Arms, centromere
(3) Chromatids, centromere
(4) None of these

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Question 28. Which of the following statements is not correct regarding colchicine?

(1) It prevents assembly of microtubules.
(2) It inhibits chromosome replication.
(3) It is an alkaloid.
(4) It is called a mitotic poison.

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Question 29. What is true about telophase stage?

(1) Chromosomes lose their identity as discrete elements.
(2) Chromosomes cluster at opposite spindle poles.
(3) Nuclear envelope, nucleolus, Golgi complex and ER reform.
(4) All of these.

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Question 30. Spindle usually persists in the form of ____ during ____ method of cytokinesis.

(1) Phragmoplast, cleavage
(2) Phragmoplast, cell plate
(3) Cell plate, cell plate
(4) Cell plate, cleavage

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Question 31. The given diagram depicts cell plate method of cytokinesis in plant cells. Identify A, B and C.

(1) A-Daughter nucleus, B-Phragmoplast, C-Vesicles
(2) A-Daughter nucleus, B-Vesicles, C-Phragmoplast
(3) A-Parent nucleus, B-Vesicles, C-Phragmoplast
(4) A-Parent nucleus, B-Phragmoplast, C-Vesicles

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Question 32. During cell division, the spindle fibers get attached to condensing chromosome at a highly differentiated region, this region is called as

(1) Chromomere
(2) Chromocentre
(3) Centriole
(4) Kinetochore

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Question 33. If a tissue has at a given time 1024 cells, how many cycles of mitosis had the original parental single cell undergone?

(1) 512
(2) 10
(3) 1024
(4) 256

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Question 34. Identify the structures indicated by labels (i), (ii), (iii) and (iv) and select the correct option.

(1) (i)-Chromatid, (ii)-Centriole, (iii)-Centromere, (iv)-Chromosome
(2) (i)-Chromosome, (ii)-Centriole, (iii)-Centromere, (iv)-Chromatid
(3) (i)-Chromatid, (ii)-Centromere, (iii)-Centriole, (iv)-Chromosome
(4) (i)-Chromosome, (ii)-Centromere, (iii)-Centriole, (iv)-Chromatid

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Question 35. The separation of two chromatids of each chromosome at early anaphase is initiated by

(1) The interaction of centromere with the chromosomal fibres.
(2) The elongation of metaphasic spindle
(3) The force of repulsion between the divided kinetochores
(4) All of these

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Question 36. Cell would normally proceed to mitosis without interruption

(1) Once it has entered the S phase
(2) Once it has entered the G₂ phase
(3) At any time during cell division activity
(4) None of these

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Question 37. Crossing over in diploid organisms is responsible for

(1) Dominance of genes
(2) Linkage between genes
(3) Segregation of alleles
(4) Recombination of alleles

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Question 38. An anther has 1200 pollen grains. How many PMCs must have been there to produce them?

(1) 1200
(2) 300
(3) 150
(4) 2400

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Question 39. The members of a homologous pair of chromosomes

(1) Are identical in size and appearance
(2) Contain identical genetic information
(3) Separate and move to opposite poles of the cell during mitosis
(4) Are found only in haploid cells.

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Question 40. The figure given below shows a cell undergoing meiosis.

Which of the options below shows the next stage in the process?

(1)  
(2) 
(3)  
(4) 

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Question 41. At what phase of meiosis are there two cells, each with separated sister chromatids that have been moved to opposite spindle poles?

(1) Anaphase-II
(2) Anaphase-I
(3) Telophase-II
(4) Telophase-I

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Question 42. If gametes are produced after reduction division, they are termed as

(1) Coenogametes
(2) Mitogametes
(3) Pseudogametes
(4) Meiogametes

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Question 43. The process of crossing over is assisted by which of the following enzymes?

(1) Endonuclease
(2) Polymerase
(3) Ligase
(4) Both (1) and (3)

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Question 44. Disjunction refers to

(1) The separation of homologous chromosomes at anaphase-I
(2) The type of chromosomal aberration in which there is loss of a part of a chromosome
(3) Incompatibility in fungi and other thallophytes
(4) Modification of gene action by a nonallelic gene.

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Question 45. In animals, meiotic division occurs during gamete formation. This gametic meiosis results in

(1) Haplontic life cycle
(2) Diplontic life cycle
(3) Diplohaplontic life cycle
(4) None of these

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Detailed Solutions

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