Students should refer to Worksheets Class 11 Biology Cell Cycle and Cell Division Chapter 10 provided below with important questions and answers. These important questions with solutions for Chapter 10 Cell Cycle and Cell Division have been prepared by expert teachers for Class 11 Biology based on the expected pattern of questions in the Class 11 exams. We have provided Worksheets for Class 11 Biology for all chapters on our website. You should carefully learn all the important examinations questions provided below as they will help you to get better marks in your class tests and exams.
Cell Cycle and Cell Division Class 11 Biology Worksheet
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. In which phase of mitosis, cell does not have nucleolus –
(a) Interphase
(b) Telophase
(c) Late prophase
(d) All of these
Answer
C
Question. Precursor of cell wall is –
(a) Cell membrane
(b) Cell fragments
(c) Cell Plate
(d) Nuclear membrane
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 | (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. Dissolution of synaptonemal complex is started and chiasmata are first seen during-
(a) Pachytene
(b) Diplotene
(c) Diakinesis
(d) Zygotene
Answer
B
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. Cell cycle involves –
(a) Duplication of genome
(b) Synthesis of cell constituents
(c) Division of cell
(d) All the above
Answer
D
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. 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
Question. Which phase is marked by terminalization of chiasmata-
(a) Diakinesis
(b) Pachytene
(c) Diplotene
(d) Zygotene
Answer
A
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. Karyotype of chromosomes is prepared at :-
(a) Prophase
(b) Interphase
(c) Metaphase
(d) Anaphase
Answer
C
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. 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. Crossing over occurs during :-
(a) Pachytene
(b) Diplotene
(c) Diakinesis
(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. Chiasmata appear in which stage-
(a) Leptotene
(b) Zygotene
(c) Pachytene
(d) Diplotene
Answer
D
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. 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. 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. 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
