CBSE Class 11 Cell Cycle and Cell Division Worksheet Set 01

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Question. In meiosis :-
(a) Division of nucleus twice but replication of DNA only once
(b) Division of nucleus twice and replication of DNA twice
(c) Division of nucleus once and replication of DNA is also once
(d) Division of nucleus once and DNA - replication is twice
Answer.A

Question. After meiosis - I, the two chromatids of a chromosome are :-
(a) Genetically similar
(b) Genetically different
(c) There occurs only one chromatid in each chromosome
(d) None of the above
Answer.B

Question. In which order, cytokinesis occurs in plants :-
(a) Centripetal
(b) Centrifugal
(c) Oblique
(d) Equatorial
Answer.B

Question. If the number of bivalents are 8 in metaphase - I, what shall be the number of chromosomes in daughter cells after meiosis - I and meiosis - II respectively:-
(a) 8 and 4
(b) 4 and 4
(c) 8 and 8
(d) 16 and 8
Answer.C

Question. Which of the two events restore the normal number of chromosomes in life cycle ?
(a) Mitosis and Meiosis
(b) Meiosis and fertilisation
(c) Fertlisation and mitosis
(d) Only meiosis
Answer.B

Question. Match the column-I with column-II and select the correct answer :-
Column-I                 Column-II
(A) Pachytene       (i) Bouquet stage
(B) Zygotene        (ii) Chiasma visible
(C) Diplotene        (iii) Terminalisation
(D) Leptotene       (iv) Gene exchange
(E) Diakinesis       (v) Synapsis
(a) A-i, B-ii, C-iii, D-iv, E-v
(b) A-iv, B-v, C-ii, D-i, E-iii
(c) A-iii, B-iv, C-v, D-ii, E-i
(d) A-ii, B-iii, C-iv, D-i, E-v
Answer.B

Question. Chromosomal movement in Anaphase occurs with the help of :-
(a) Astral rays
(b) Centrioles
(c) NOR
(d) Spindle fibres
Answer.C

Question. Nuclear envelope reappears at :-
(a) Metaphase
(b) Prophase
(c) Anaphase
(d) Telophase
Answer.D

Question. In meiosis, how many cycles of chromosome division occurs ?
(a) One
(b) Four
(c) Two
(d) Three
Answer.A

Question. Which does not occurs in prophase ?
(a) Decondensation of chromatin
(b) Condensation of chromatin
(c) Appearance of chromosome
(d) Disappearance of nuclear membrane and nucleolus
Answer.A

Question. In which stage of cell division, number of chromosomes best counted:-
(a) Prophase
(b) Metaphase
(c) Telophase
(d) Interphase
Answer.B

Question. "Bouquet-stage" occur in which sub stages of prophase -I ?
(a) Leptotene
(b) Zygotene
(c) Pachytene
(d) Diplotene
Answer.B

Question. At anaphase - II of meiosis each chromosome contains:-
(a) 4 DNA
(b) 3 - DNA
(c) 2 - DNA
(d) 1 - DNA
Answer.A

Question. Diakinesis represents :-
(a) transition to prophase
(b) transition to metaphase
(c) transition to anaphase
(d) transition to telophase
Answer.B

Question. Slipping of chiasmata towards the ends of bivalent is called :-
(a) Terminalisation
(b) Diakinesis
(c) Interkinesis
(d) Congression
Answer.A

Question. Synaptonemal complex is characteristic of :-
(a) Mitotic chromosomes
(b) Leptotene chromosomes
(c) Paired meiotic chromosomes
(d) Metaphase
Answer.C

Question. In which stage of mitosis, the chromosomes are composed of two chromatids ?
(a) Prophase & metaphase
(b) Anaphase and telophase
(c) Prophase and telophase
(d) Metaphase and anaphase
Answer.A

Question. In Anaphase - I each chromosome composed of:-
(a) One chromatid
(b) Two chromatid
(c) Four chromatid
(d) Many chromatid
Answer.B

Question. Gap between division phase and start of DNA-replication is called :-
(a) G1 - phase
(b) G2 - phase
(c) M - phase
(d) Interkinesis
Answer.A

Question. Colchicine prevents the mitosis of cells at which of the following stage?
(a) Anaphase
(b) Metaphase
(c) Prophase
(d) Interphase
Answer. C

Question. Spindle fibres of mitotic cells are made up of
(a) tubulin
(b) actin 
(c) myosin
(d) collagen
Answer. A

Question. Many cells function properly and divide mitotically even though they do not have
(a) plasma membrane
(b) cytoskeleton
(c) mitochondria
(d) plastids
Answer. D

Question. During meiosis I, the chromosomes start pairing at
(a) Leptotene
(b) Zygotene
(c) Pachytene
(d) Diplotene
Answer. B

Question. How many mitotic divisions are needed for a single cell to make 128 cells? 
(a) 7
(b) 14
(c) 28
(d) 64
Answer. A

More Questions

1. Name the stage of cell division in which paired homologous chromosomes get shortened & thickened?

2. Which structure of animal cell forms the asters of spindle?

3. Name the cells in which meiosis occurs?

4. What is the importance of chromosomes replication during interphase?

5. Distinguish between metaphase of mitosis & metaphase I of meiosis?

6. How does duration affect the cell cycle in organism?

7. What is the significance of meiosis?

8. Differentiate between animal cell mitosis & plant cell mitosis?

9. Explain the various phases of meiosis II division?

Click on link below to download CBSE Class 11 Cell Cycle and Cell Division Worksheet A.