Cell Cycle and Cell divisons Set 2 MCQs

Q1 | A. During interphase, chromosomes are recognized as chromatin network. R. Chromosomes are highly dispersed during this phase.

Both A and R are true and R is correct explanation of A.
Both A and R are true and R is not correct explanation of A
A is true and R is wrong
I is wrong and R is true

Answer: Both A and R are true and R is correct explanation of A.

Q2 | A. G1 phase is also called growth phase. R. There is a lot of biosynthetic activity during

Both A and R are true and R is correct explanation of A.
Both A and R are true and R is not correct explanation of A
A is true and R is wrong
A is wrong and R is true

Answer: Both A and R are true and R is correct explanation of A.

Q3 | A. The meiotic division-I is also called reduction division.R. During this the chromosomes are distributed in two cells in half their number.

Both A and R are true and R is correct explanation of A.
Both A and R are true and R is not correct explanation of A
A is true and R is wrong
A is wrong and R is true

Answer: Both A and R are true and R is correct explanation of A.

Q4 | A. During meiosis, the genetic material is replicated twice whereas the cell divides one. R. Meiosis takes place in plants and animals during the formation of reproductive cells.

Both A and R are true and R is correct explanation of A.
Both A and R are true and R is not correct explanation of A
A is true and R is wrong
A is wrong and R is true

Answer: A is wrong and R is true

Q5 | A. Number of chiasmata is more in longer chromosomes.R. The number of chiasmata depends on the length of chromosomes.

Both A and R are true and R is correct explanation of A.
Both A and R are true and R is not correct explanation of A
A is true and R is wrong
A is wrong and R is true

Answer: Both A and R are true and R is correct explanation of A.

Q6 | Statement – P : G1 stage is the last stage or interphase. Statement – Q : Systhesis of DNA takes place in G2 stage.

Statement P and Q both are correct
Statement P is correct statement Q is wrong
Statement P is wrong and statement Q is correct
Statement P and Q both are wrong

Answer: Statement P and Q both are wrong

Q7 | Statement – P : Interphase is divided in three sub phases. Statement – Q : G1 phase is the initial phase of interphase.

Statement P and Q both are correct
Statement P is correct statement Q is wrong
Statement P is wrong and statement Q is correct
Statement P and Q both are wrong

Answer: Statement P and Q both are correct

Q8 | Statement – P : In ‘S’ stage centrosome is duplicated Statement – Q : In the prophase centrioles separate from each other and move towards the opposite poles.

Statement P and Q both are correct
Statement P is correct statement Q is wrong
Statement P is wrong and statement Q is correct
Statement P and Q both are wrong

Answer: Statement P is wrong and statement Q is correct

Q9 | For the statement ‘X’ and statement ‘Y’ which of the following option is correct ? Statement – ‘X’ :During meiosis the genetic material is replicated once. Statement – ‘Y’ : Genetic material is not replicated during interkinesis.

Both statements ‘X’ and ‘Y’ are correct
‘X’ is correct and ‘Y’ is wrong
Both statements ‘X’ and ‘Y’ are wrong
‘X’ is wrong and ‘Y’ is correct

Answer: Both statements ‘X’ and ‘Y’ are correct

Q10 | Match the following :_ans_key_Coulmn-I Coulmn-II_ans_key_(A) G1 Phase (i) Synthesis of proteins and Microtubules_ans_key_(B) S Phase (ii) Growth phase_ans_key_(C) G2 Phase (iii) Replication of DNA

(A - i) (B - ii) (C - iii)
(A - iii) (B - ii) (C - i)
(A - ii) (B - iii) (C - i)
(A - i) (B - iii) (C - ii)

Answer: (A - ii) (B - iii) (C - i)

Q11 | Match the following :_ans_key_Coulmn-I Coulmn-II_ans_key_(A) Prophase (i) Nuclear membrane and other orgenelles reorganise_ans_key_(B) Metaphase (ii) Arrangement of chromatids on the poles_ans_key_(C) Anaphase (iii) Formation of cytoplasmic fibres of proteins_ans_key_(D) Telophase (iv) Arranged on equatorial plane_ans_key_(E) Cytokinesis (v) The formation of syncytium

(A - i) (B - ii) (C - iii) (D - iv) (E - v)
(A - iii) (B - iv) (C - ii) (D - i) (E - v)
(A - v) (B - iv) (C - iii) (D - ii) (E - i)
(A - ii) (B - iii) (C - iv) (D - v) (E - i)

Answer: (A - iii) (B - iv) (C - ii) (D - i) (E - v)

Q12 | Match the following :_ans_key_Coulmn-I Coulmn-II_ans_key_(A) Laptotene (i) Nucleolus disappears_ans_key_(B) Zygotence (ii) Appearance of recombination nodules_ans_key_(C) Pachytene (iii) Develoment of Synapsis_ans_key_(D) Diplotene (iv) Chromosome appears filamentous_ans_key_(E) Daikinesis (v) Genes exchange at chaismata

(A - iv) (B - iii) (C - ii) (D - v) (E - i)
(A - i) (B - ii) (C - iii) (D - iv) (E - v)
(A - v) (B - iv) (C - iii) (D - ii) (E - i)
(A - ii) (B - iii) (C - iv) (D - r) (E - i)

Answer: (A - iv) (B - iii) (C - ii) (D - v) (E - i)

Q13 | Match the following :_ans_key_Coulmn-I Coulmn-II_ans_key_(A) Prophase-I (i) Chromosomes move toward one plane along with centromere._ans_key_(B) Metaphase-II (ii) Half the number of chromosomes in seen_ans_key_(C) Anaphase-I (iii) Longest phase of meiosis-I_ans_key_(D) Telophase-I (iv) Two nuclei are seen

(A - iii) (B - i) (C - ii) (D - iv)
(A - i) (B - ii) (C - iii) (D - iv)
(A - ii) (B - iii) (C - iv) (D - i)
(A - iv) (B - i) (C - i) (D - iii)

Answer: (A - iii) (B - i) (C - ii) (D - iv)

Q14 | Match the following :_ans_key_Coulmn-I Coulmn-II_ans_key_(A) Cytokinesis (i) Reformation of nuclear Membrane and golgi body_ans_key_(B) Metaphase (ii) Synthesis of RNA and protein_ans_key_(C) Telophase (iii) Centromers of chmosomes are arranged on equatorial plate._ans_key_(D) Interphase (iv) Contraction of chomosomes starts_ans_key_(v) The formation of synctium

(A - i) (B - ii) (C - iii) (D - iv)
(A - iv) (B - iii) (C - i) (D - ii)
(A - iv) (B - ii) (C - i) (D - iv)
(A - iv) (B - iii) (C - ii) (D - i)

Answer: (A - iv) (B - ii) (C - i) (D - iv)

Q15 | Select correct statement’s for cell cycle._ans_key_(i) Yeast cell can complete on cell cycle in every 90 minutes_ans_key_(ii) A period between creation of a cell and division of that cell._ans_key_(iii) Cell cycle is mainly divided into interphase and differentiation like two phases.

(i) and (ii) only
(i) and (iii) only
(ii) and (iii) only
(i), (ii) and (iii)

Answer: (i) and (ii) only

Q16 | Which of the following statement is/are correct for prophase of mitosis ?_ans_key_(i) At the end of this phase nuclear membrane and nucleolus disintegrate._ans_key_(ii) At the end of this phase two chromosome and a centromere holding them together._ans_key_(iii) This phase begins with the condensation of chromatids along their lengths.

(i) only
only (i) and (ii)
only (ii) and (iii)
(i) and (iii)

Answer: (i) only

Q17 | Which of the following statement is/are correct for Prophase-I ?_ans_key_(i) During diplotene, the members of each pair of homologous chromosomes start moving away from one another._ans_key_(ii) In zygotene, bivalent chromosomes appear tetravalent._ans_key_(iii) In diakinesis, chromatids become separated even at the site of chiasmata.

only (i)
only (ii)
only (i) and (iii)
(i), (ii) and (iii)

Answer: only (i) and (iii)

Q18 | Which of the following statement is/are correct for Meiosis-II ?_ans_key_(i) Chromosomes are arranged on equatorial plate in prophase-II_ans_key_(ii) Nucleolus disappear during telophase-II_ans_key_(iii) In anaphase-II, the chromatids with their independent centromeres are called chromosomes._ans_key_(iv) In metaphase-II, centromere of each chromosome becomes attached to filament of bipolar spindle.

only (i) and (ii)
only (iii) and (iv)
only (i), (ii) and (iii)
(i), (ii) and (iii)

Answer: only (iii) and (iv)

Q19 | Find out the incorrect pair.

Telophase – Chromatin is observed
G1 phase – New DNA is synthesized
Prophase – nuclear membrane disintegrates
Zygotene - Synapsis

Answer: G1 phase – New DNA is synthesized

Q20 | Find the incorrect pair.

Bipolar spindle – Cytoplasmic fibres of protein
Prophase – Chromosome made up of two chromatids and centromere
Anaphase – Equatorial plate
Metaphase - Kinetochore

Answer: Anaphase – Equatorial plate

Q21 | From the following which pair does not match ?

S – state – Synthesis of DNA
Meiosis – One parental cell produces two daughter cells
Anaphase – Each chomatid with independent centromere.
Zygotene - Synapsis

Answer: Meiosis – One parental cell produces two daughter cells

Q22 | “The number of chiasmata depends on chromosomes” – What is the mistake in the given statement ?

Width of chromosome – Word in not mentioned
Size of chromosome – Word is not mentioned
Number of chromosome – Word is not mentioned
Length of chromosome – Word is not mentioned

Answer: Length of chromosome – Word is not mentioned

Q23 | Which is the true statement for mitosis ?

Cell formed by it performs diverse functions i.e. show division of labour
The number of chromosomes in the new cells are half than that of the parent cell.
Two cells are formed as a result of this division are identical in all aspects.
Cells formed as a result of mitosis have different genetic characters.

Answer: Two cells are formed as a result of this division are identical in all aspects.

Q24 | Which of the following statement is true for mitosis ?

Cytokinesis and karyokinesis occur together
Cytokinesis and karyokinesis are random
Cytokinesis preceedes karyokinesis
Karyokinesis preceedes cytokinesis

Answer: Karyokinesis preceedes cytokinesis

Q25 | Indentify the correct sequence of karyokinesis stages :

Prophase, Anaphase, Metaphase, Telophase
Prophase, Metaphase, Anaphase, Telophase
Prophase, Telophase, Metaphase, Anaphase
Prophase, Metaphase, Telophase, Anaphase

Answer: Prophase, Metaphase, Anaphase, Telophase