CBSE Class 11 Biology Cell Cycle and Cell Division MCQs Set 05

Question. Which phase is marked by terminalization of chiasmata-
(a) Diakinesis
(b) Pachytene
(c) Diplotene
(d) Zygotene

Answer: A

Question. Prophase-I of meiotic division is typically longer and more complex, it is subdivided into five phases, on the basis of :-
(a) Staining
(b) Behaviour of chromosomes
(c) Duration
(d) Number of chromosomes

Answer: B

Question. In which stage of mitosis, Golgi complexes, ER, nucleolus and nuclear envelope begins to disappear-
(a) Early prophase
(b) Late prophase
(c) Prometa phase
(d) Metaphase

Answer: B

Question. Match the following –
(a) Prophase         (I) Decondensation of chromosome
(b) Metaphase      (II) Division of centromere
(c) Anaphase       (III) Attachment of spindle fibres on kinetochores of chromosomes
(d) Telophase      (IV) Initiation of assembly of mitotic spindles
(a) a (IV) b (III) c (I) d (II)
(b) a (IV) b (III) c (II) d (I)
(c) a (III) b (IV) c (II) d (I)
(d) a (III) b (IV) c (I) d (II)

Answer: B

Question. The most dramatic period of cycle, involving a major reorganisation of virtually all components of cell is –
(a) G₁
(b) S
(c) G₂
(d) M

Answer: D

Question. Karyotype of chromosomes is prepared at :-
(a) Prophase
(b) Interphase
(c) Metaphase
(d) Anaphase

Answer: C

Question. Chiasmata appear in which stage-
(a) Leptotene
(b) Zygotene
(c) Pachytene
(d) Diplotene

Answer: D

Question. Which of the following is not a significance of meiosis –
(a) Helps in conservation of specific chromosome number in each species
(b) Increase in genetic variability
(c) Helps in evolution and adaptation
(d) Helps in growth of organism

Answer: D

Question. In which phase of mitosis, cell does not have nucleolus –
(a) Interphase
(b) Telophase
(c) Late prophase
(d) All of the options

Answer: C

Question. Dissolution of synaptonemal complex is started and chiasmata are first seen during-
(a) Pachytene
(b) Diplotene
(c) Diakinesis
(d) Zygotene

Answer: B

Question. Meiosis involves two sequential cycles of nuclear and cell division called meiosis – I & meiosis – II, but how many cycles of DNA replication can be seen during this type of division –
(a) One
(b) Two
(c) Three
(d) Four

Answer: A

Question. During poleward movement of chromosomes in anaphase centromere (kinetochore) of each daughter chromosome facing towards –
(a) Pole
(b) Equatorial plate
(c) Lateral
(d) It is random , sometimes towards pole and sometimes towards equatorial plate

Answer: A

Question. Precursor of cell wall is –
(a) Cell membrane
(b) Cell fragments
(c) Cell Plate
(d) Nuclear membrane

Answer: C

Question. Cell cycle involves –
(a) Duplication of genome
(b) Synthesis of cell constituents
(c) Division of cell
(d) All of the options

Answer: D

Question. Regarding arrangement of chromosome on equator during metaphase, which of the following statements is incorrect –
(a) Each chromatid remains connected by one spindle fiber from both poles
(b) Each chromosome remains connected by spindle fibres from both poles
(c) Spindle fibre remains attached on kinetochore of both chromatids
(d) Each chromosome remains connected at both poles by spindle fibres

Answer: A

Question. Leptotene, zygotene, pachytene, diplotene and diakinesis are 5 phases of prophase-I. Which one is the longest in human oogenesis-
(a) Zygotene
(b) Leptotene
(c) Diplotene
(d) Diakinesis

Answer: C

Question. Regarding to cell cycle which of the following statement is wrong –
(a) Cytoplasm increase is a continuous process
(b) DNA synthesis occurs only during one specific stage
(c) replicated chromosomes distributed to daughter nuclei by complex series of events
(d) events for replicated chromosomes distribution are not under genetic control

Answer: D

Question. Match the following –
(a) Prophase – II          (I) Enclosure of chromosomes in nuclear envelope
(b) Metaphase – II      (II) Separation of sister chromatids
(c) Anaphase – II       (III) Chromosome alignment on equator
(d) Telophase – II      (IV) Disappearance of nuclear membrane
(a) a (IV) b (III) c (I) d (II)
(b) a (IV) b (III) c (II) d (I)
(c) a (IV) b (II) c (III) d (I)
(d) a (IV) b (I) c (II) d (III)

Answer: B

Question. Meiosis ensures the production of ……….. phase in life cycle of sexually reproducing organism, where as fertilisation restores ……… phase.
(a) diploid, haploid
(b) haploid, triploid
(c) diploid, triploid
(d) haploid, diploid

Answer: D

Question. About cell – cycle, which of the following statement is correct –
(a) In Go phase cells are metabolically inactive
(b) In Go phase cells are metabolically active
(c) Diploid somatic cells of animals divide by only meiotic division
(d) In plants only haploid cells can show mitotic divisions

Answer: B

Question. Crossing over occurs during :-
(a) Pachytene
(b) Diplotene
(c) Diakinesis
(d) Zygotene

Answer: A

Question. Which of the following is not a significance of mitosis
(a) Maintenance of identical genetic complement
(b) Cell repair
(c) Restore nucleo cytoplasmic ratio
(d) Genetic variability

Answer: D