Please refer to VBQs for Class 11 Biology Cell Cycle and Cell Division. All value based questions for English Class 11 have been provided with solutions. We have provided below important values questions and answers. Students should learn these solved VBQs for Class 11 Biology as these will help them to gain more marks and help improve understanding of important topics.
Cell Cycle and Cell Division VBQs Class 11 Biology with Answers
Question. Mark incorrect statements :-
(A) Meiosis involves only a single cycle of DNA replication
(B) Four haploid cells are formed at the end of meiosis-I
(C) Meiosis occurs in diploid cells
(D) In yeast, cell cycle takes about 90 minutes.
(a) A and B
(b) A and C
(c) Only B
(d) All are correct
Question. Number of chromosome pairs at equator in metaphase-I of a diploid plant cell (n = 25 chromosomes) shall be-
Question. Diploid cell in human, where cell division does not occur :-
(a) Heart cell (b) Muscle cell
(c) Nerve cell
(a) Only c
(b) b and c
(c) a and c
(d) a, b and c
Question. The drawing below shows a cell whose diploid chromosome number is four. This cell is in:-
(a) Metaphase of mitosis
(b) Anaphase of mitosis
(c) First anaphase of meiosis
(d) Second anaphase of meiosis
Question. During meiosis how many cycles of nucleus division,DNA replication and division of centromere take place respectively :-
(a) Three, Two, One
(b) One, Two, Two
(c) Two, Two, One
(d) Two, One, One
Question. Identify the following diagram-
(a) Transition to Metaphase (mitosis)
(b) Transition to Anaphase-II (meiosis)
(c) Transition to Metaphase-I (meiosis)
(d) Transition to Anaphase (mitosis)
Question. A cell has 46 chromosomes at each pole in mitotic telophase. In this division the number of chromatids at the metaphase was :-
Question. A mouse cell is treated with a chemical that interferes with the activity of microfilaments. Which of the following will probably be affected the most?
(a) Formation of spindle fibres
(b) Division of cytoplasm
(c) Chromosome duplication
(d) Pairing of homologous chromosomes
Question. In a diploid cell before S-phase quantity of DNA is 20 pico gram (pg) after meiosis I what will be the quantity of DNA in each daughter cell ?
(a) 10 pg
(b) 20 pg
(c) 5 pg
(d) 40 pg
Question. How many meiotic divisions are required during the formation of 500 zygotes, if in males one meiotic division resutls in formation of four male gametes and in females one meiotic division results in formation of one female gamete?
Question. Which of the following is not correctly matches a phase of the cell cycle with its function ?
(a) Second gap phase – Period of cytoplasmic growth
(b) First gap phase – Most of the organelle duplication
(c) Interphase – Phase of preparation for cell division
(d) DNA synthesis – Doubling of number of phase chromosome in cell
Question. Interval between mitosis and initiation of DNA replication is called :-
(a) G2 – Phase
(b) G1 – phase
(d) S – phase
Question. In which of the following stages of mitosis,chromosomes are most condensed ?
(a) Stage between the stage of cell plate formation and stage of DNA replication
(b) Stage between the stage of centrioles separation and stage of splitting of centromere
(c) Stage between the stage of DNA replication and stage of initiation of condensation of chromatin
(d) Stage between the stage of metaphase plate formation and stage of decondensation of chromosomes
Question. If the cell had diploid or 2n number of chromosomes at G1, after S phase the number of chromosomes in the cell is ?
(a) 2 n
(b) 4 n
1. Which one is correct for G0 stage ?
I. It is a quiescent stage.
II. In this phase cell cycle is stopped
III. G0 cells do not grow or proliferate but metabolically active
IV. G0 cells can divide in response to some stimulus
(a) All are correct
(b) I,II,III are correct
(c) I,II are correct
(d) Only I and IV are correct
Question. Label the structure indicated by (i), (ii), (iii) and (iv)-
(a) (i)-Chromatid, (ii)-Centriole,
(b) (i)-Chromosome, (ii)-Centriole,
(c) (i)-Chromatid, (ii)-Centromere,
(d) (i)-Chromosome, (ii)-Centromere,
(iii) Centriole, (iv)-Chromatid
Question. The following graphs (A and B) depicts changes in DNA Content during cell cycle. Identify the cell division from A and B :-
(a) A – Meiosis-II, B – Meiosis-I
(b) A – Mitosis, B – Meiosis-I
(c) A – Meiosis-I, B – Mitosis
(d) A – Mitosis, B – Meiosis
Question. Arrange the following events of meiosis in the correct sequence –
A. Terminalisation of chiasmata
B. Crossing over
D. Disjunction of chromosomes
E. Dissolution of synaptonemal complex
The correct sequence is-
(a) A – B – C – D – E
(b) E – D – C – B – A
(c) C – B – D – E – A
(d) C – B – E – A – D
Question. Number of chromatids in each chromosome at anaphase is-
(a) One in mitosis, one in meiosis-I and two in meiosis-I
(b) One in mitosis, two in meiosis-I and one in meiosis-II
(c) Two in mitosis, one in meiosis-I and two in meiosis-II
(d) Two in mitosis, two in meiosis-I and two in meiosis-II
Question. Meiosis is not having the one of the character out of the four given below-
(a) It involves two stages of DNA replication, one before meiosis-I and another before meiosis-II
(b) It involves recombination and crossing over
(c) Sister chromatids separate during anaphase-II
(d) Nuclear membrane disappears during prophase
Question. During mitosis ER and nucleolus begin to disappear at :
(a) Early prophase
(b) Late prophase
(c) Early metaphase
(d) Late metaphase
Question. Which stages of cell division do the following figures A and B represent respectively ?
(a) Prophase – Anaphase
(b) Metaphase – Telophase
(c) Telophase – Metaphase
(d) Late Anaphase – Prophase
Question. During cell growth, DNA synthesis takes place in:-
(a) G2 phase
(b) M phase
(c) S phase
(d) G1 phase
Question. At metaphase, chromosomes are attached to the spindle fibres by their :-
(c) Secondary constrictions
Question. Spindle fibres attach on to :-
(a) Telomere of the chromosome
(b) Kinetochore of the chromosome
(c) Centromere of the chromosome
(d) Kinetosome of the chromosome
Question. During gamete formation, the enzyme recombinase participates during :-
Question. Synapsis occurs between :-
(a) Two homologous chromosomes
(b) A male and a female gamete
(c) mRNA and ribosomes
(d) Spindle fibres and centromere
Question. Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres :-
(a) Anaphase I
(b) Anaphase II
(c) Metaphase I
(d) Metaphase II
Question. Which of the following is wrong about G1 phase?
(a) G-1 Stage followed by Mitosis
(b) Cell is metabolically active
(c) Cell grows continuously
(d) Cell does not replicate its DNA
Question.The complex formed by a pair of synapsed homologous chromosomes is called :
(b) Equatorial plate
Question. Given below is a schematic break-up of the phases/stages of cell cycle :-
Which one of the following is the correct indication of the stage/phase in the cell cycle ?
(a) A – Cytokinesis
(b) B – Metaphase
(c) C – Karyokinesis
(d) D – Synthetic phase
Question. During which phase(s) of cell cycle, amount of DNA in a cell remains at 4C level if the initial amount is denoted as 2C ?
(a) G0 and G1
(b) G1 and S
(c) Only G2
(d) G2 and M
Question. Select the correct option with respect to mitosis
(a) Chromatids separate but remain in the centre of the cell in anaphase.
(b) Chromatids start moving towards oposite poles in telophase.
(c) Golgi complex and endoplasmic reticulum are still visible at the end of prophase.
(d) Chromosomes move to the spindle equator and get aligned along equatorial plate in metaphase
Question. In ‘S’ phase of the cell cycle :-
(a) Amount of DNA doubles in each cell.
(b) Amount of DNA remains same in each cell.
(c) Chromosome number is increased.
(d) Amount of DNA is reduced to half in each cell.
Question. The stage during which separation of the paired homologous chromosomes begins is
Question. Interphase includes :-
(a) G0, G1, S, G2
(b) Prophase, Metaphase, Anaphase, Telophase
Question. In which phase of cell cycle the amount of DNA in a diploid cell become four times as compared to a haploid cell ?
(c) G2, S & M
Question. A somatic cell that has just completed the S phase of its cell cycle, as compared to gamete of the same species, has :
(a) same number of chromosomes but twice the amount of DNA
(b) twice the number of chromosomes and four times the amount of DNA
(c) four times the number of chromosomes and twice the amount of DNA
(d) twice the number of chromosomes and twice the amount of DNA
Question. 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 ?
(a) Chromosomes will be fragmented
(b) Chromosomes will not segregate
(c) Recombination of chromosome arms will occur
(d) Chromosomes will not condense
Question. During cell cycle in which phase normal components of cell are synthesized, and assembled?
Question. Which of the following is longest phase of the cell cycle ?
(d) M – phase
Question. In meiosis crossing over is initiated at :
Question. The enzyme recombinase is required at which stage of meiosis :
Question. When cell has stalled DNA replication fork, which checkpoint should be predominantly activated?
(b) Both G2/M and M
Question. Which of the following options gives the correct sequence of events during mitosis ?
(a) Condensation → nuclear membrane disassembly → arrangement at equator → centromere division → segregation → telophase
(b) Condensation → crossing over → nuclear membrane disassembly → segregation → telophase
(c) Condensation → arrangement at equator → centromere division → segregation → telophase
(d) Condensation → nuclear membrane disassembly → crossing over → segregation → telophase
Question. Given below is the representation of a certain event at a particular stage of a type of cell division. Which is this stage ?
(a) Prophase of Mitosis
(b) Both prophase and metaphase of mitosis
(c) Prophase I during meiosis
(d) Prophase II during meiosis
Question. Arrange the following events of meiosis in correct sequence :
(a) Crossing over
(c) Terminalisation of chaismata
(d) Disappearance of nucleolus
(a) (b), (c), (d), (a)
(b) (b), (a), (d), (c)
(c) (b), (a), (c), (d)
(d) (a), (b), (c), (d)