Chapter:

130+ Cell Cycle and Cell divisons Solved MCQs

in Biology

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: All India Pre Medical Test (AIPMT) .

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1.	Approximately how many cells are present in the body of an adult person ?
A.	1014
B.	1015
C.	1018
D.	1021
Answer» A. 1014

discuss

2.	The period between two successive cell divisions in called........
A.	Duplication
B.	Growth phase
C.	Cell cycl
D.	Interphase
Answer» C. Cell cycl

discuss

3.	Which is fundamental property of all living organisms ?
A.	Respiration
B.	Germination
C.	Growth
D.	Photosynthesis
Answer» C. Growth

discuss

4.	The two chromatids of a metaphase chromosome represents :
A.	homologous chromosome of a diploid set
B.	replicated chromosomes to be separated at anaphase
C.	non-homologous joined at the centromere
D.	maternal and paternal chromosomes joined at the centromere
Answer» B. replicated chromosomes to be separated at anaphase

discuss

5.	With how many cell reproduction starts ?
A.	Two cell
B.	Single cel
C.	Many cells
D.	Somatic cell
Answer» B. Single cel

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6.	Which of the following is present in maximum number in an adult person ?
A.	Somatic cell
B.	Gamete
C.	Reproductive cell
D.	Zygote
Answer» A. Somatic cell

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7.	What is synthesized during G2 – phase ?
A.	Protein
B.	Micro tubules
C.	RNA
D.	(a) and (b)
Answer» D. (a) and (b)

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8.	Synthesis of RNA and protein takes place in which phase of the cell cycle ?
A.	S-phase
B.	M-phase
C.	G1-phase
D.	Metaphase
Answer» C. G1-phase

discuss

9.	During which phase can nucleolus be observed clearly ?
A.	Metaphase-II
B.	Early Prophase
C.	Anaphase
D.	Metaphase
Answer» B. Early Prophase

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10.	Which structure can be observed at the surface of centromere during metaphase ?
A.	Kinetochore
B.	Chromatophore
C.	Kinetophore
D.	Chromatophore
Answer» A. Kinetochore

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11.	Mitosis actually means……
A.	Reduction in number of chromosomes
B.	Division of nucleus only
C.	Division of cytoplasm only
D.	Both nuclear (Karyokinesis) and cytoplasmic divisions.
Answer» D. Both nuclear (Karyokinesis) and cytoplasmic divisions.

discuss

12.	The role of mitosis is not merely to divide a cell into two daugher cells but to ensure genetic continuity from one cell generation. The mechanism ensuring genetic continutity is;
A.	Formation of two cells with identical DNA
B.	The new cells have half the number of chromosomes.
C.	Formation of cell by new chromosome
D.	Formation of two daughter cells
Answer» A. Formation of two cells with identical DNA

discuss

13.	Substances that interface with microtubule function interfare with cell division because....
A.	Microtubules are distributed equally in the new cells
B.	Microtubules are involved in precise separate set of chromosomes get into each daughter cells.
C.	Without microtubules, cytokinesis cannot take place and a membrane is form
Answer» B. Microtubules are involved in precise separate set of chromosomes get into each daughter cells.

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14.	The stage of mitosis during which the nucleolus disintegrates and chromosomes appear is known as
A.	Interphase
B.	Metaphase
C.	Prophase
D.	Anaphase
Answer» C. Prophase

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15.	Chromosomes can be counted during :
A.	Prophase
B.	Metaphase
C.	Anaphas
D.	Telophase
Answer» B. Metaphase

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16.	The nuclear membrane disintegrates and spindle appears at :
A.	Prometaphase
B.	Early prophase
C.	Late telophase
D.	Late prophase
Answer» D. Late prophase

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17.	The separation of two chomatids of each chromosome during early anaphase is initiated by :
A.	The interaction of centromere with the chromosomal fibres.
B.	The elongation of metaphytic spindle
C.	Attachment of spindle fibres with Kinetochore
D.	All the above
Answer» C. Attachment of spindle fibres with Kinetochore

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18.	The telophase stage of mitosis is…….
A.	The last stage of karyokinesis
B.	More or less opposite of prophase stage.
C.	The stage where spindle fibres are abosorbed in cytoplasm
D.	All of the above
Answer» D. All of the above

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19.	The term ‘karyokinesis’ is used for….
A.	Disappearance of nuclear mimbrane during metaphase
B.	Changes occuring at anaphase, when chromosomes move to the opposite poles.
C.	Event occuring during interphase
D.	Over all changes occurring in nucleus during the cell division.
Answer» D. Over all changes occurring in nucleus during the cell division.

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20.	How many mitotic divisions must occur in a cell to form 1024 cells ?
A.	20
B.	10
C.	40
D.	64
Answer» B. 10

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21.	The difference in the division of a plant cell and animal cell is in.....
A.	Cell membrane formation
B.	Spindle formation
C.	Movement of chromosomes from equatorial plane
D.	Coiling of the chromosomes
Answer» A. Cell membrane formation

discuss

22.	During which phase of prophase-I of meiosis does the process of synapsis occur ?
A.	Pachytene
B.	Zygotene
C.	Leptotene
D.	Diplotene
Answer» B. Zygotene

discuss

23.	In mitosis the daughter cells resemble to their parent cell. But in meiosis they differ not only from parent cell in having half the number of chromosomes, but also differ among themselves qualitatively in genetic constitution due to.....
A.	Segragation and crossing over only
B.	Independent assortment and segregation only
C.	Crossing over, independent assortment and segregation
D.	Independent assortment and crossing over only
Answer» C. Crossing over, independent assortment and segregation

discuss

24.	Which is the longest phase of meitoic division ?
A.	Prophase-I
B.	Metaphase-I
C.	Anaphase-I
D.	Telophase-I
Answer» A. Prophase-I

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25.	At which stage, the homologous chromosomes separate due to repulsion, but are yet held by chiasmata :
A.	Zygotene
B.	Pachytene
C.	Diplotene
D.	Diakinesis
Answer» C. Diplotene

discuss

26.	If there are four chromosomes present during prophase – I, how many chromosome are there in each cell at the end of anaphase - II
A.	4
B.	8
C.	2
D.	16
Answer» C. 2

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27.	Meiosis – II is :
A.	Cell division
B.	Mitotic division
C.	Commonly cell elongation
D.	Reduction division
Answer» B. Mitotic division

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28.	Significance of meiosis is associated with :
A.	DNA duplication
B.	Asexual reproduction
C.	Sexual reproduction
D.	Growth of the body
Answer» C. Sexual reproduction

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29.	The minimum number of meiotic divisions required to obtain 100 pollen grain of wheat is.....
A.	40
B.	25
C.	150
D.	200
Answer» B. 25

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30.	The number of meiotic divisions required to produce 400 seeds in a pea plant is.....
A.	200
B.	700
C.	500
D.	400
Answer» D. 400

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31.	Significance of meiosis.........
A.	The number of chromosomes is maintained in all cells.
B.	It is important process for evolution
C.	Due to division, cell can maintain their efficient size.
D.	A very significant contributing of mitosis is cell repair
Answer» B. It is important process for evolution

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32.	In which of the following matters mitosis and meiosis are similar ?
A.	Both are precede by DNA replication
B.	Both have pairing of homologous chromosomes
C.	Both process occurs in all kinds of cells
D.	Both include separation of paired chromosomes.
Answer» B. Both have pairing of homologous chromosomes

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33.	During which of the following phases of mitosis asters appear around the centroles ?
A.	Prophase
B.	Metaphase
C.	Anaphase
D.	Telophase
Answer» A. Prophase

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34.	During which stage of meiosis crossing over takes place ?
A.	Leptotene
B.	Zygotene
C.	Dikinesis
D.	Pachytene
Answer» C. Dikinesis

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35.	At which of the following stage4s of cell cycle proteins and microtubules, required for mitosis, are synthesized ?
A.	G2 phase
B.	G1 phase
C.	Interphase
D.	M phase
Answer» A. G2 phase

discuss

36.	If the initial amout of DNA is denoted as 2C then it increases into :
A.	2C
B.	4C
C.	8C
D.	6C
Answer» B. 4C

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37.	A. During interphase, chromosomes are recognized as chromatin network. R. Chromosomes are highly dispersed during this phase.
A.	Both A and R are true and R is correct explanation of A.
B.	Both A and R are true and R is not correct explanation of A
C.	A is true and R is wrong
D.	I is wrong and R is true
Answer» A. Both A and R are true and R is correct explanation of A.

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38.	A. G1 phase is also called growth phase. R. There is a lot of biosynthetic activity during
A.	Both A and R are true and R is correct explanation of A.
B.	Both A and R are true and R is not correct explanation of A
C.	A is true and R is wrong
D.	A is wrong and R is true
Answer» A. Both A and R are true and R is correct explanation of A.

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39.	A. The meiotic division-I is also called reduction division. R. During this the chromosomes are distributed in two cells in half their number.
A.	Both A and R are true and R is correct explanation of A.
B.	Both A and R are true and R is not correct explanation of A
C.	A is true and R is wrong
D.	A is wrong and R is true
Answer» A. Both A and R are true and R is correct explanation of A.

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40.	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.
A.	Both A and R are true and R is correct explanation of A.
B.	Both A and R are true and R is not correct explanation of A
C.	A is true and R is wrong
D.	A is wrong and R is true
Answer» D. A is wrong and R is true

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41.	A. Number of chiasmata is more in longer chromosomes. R. The number of chiasmata depends on the length of chromosomes.
A.	Both A and R are true and R is correct explanation of A.
B.	Both A and R are true and R is not correct explanation of A
C.	A is true and R is wrong
D.	A is wrong and R is true
Answer» A. Both A and R are true and R is correct explanation of A.

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42.	Statement – P : G1 stage is the last stage or interphase. Statement – Q : Systhesis of DNA takes place in G2 stage.
A.	Statement P and Q both are correct
B.	Statement P is correct statement Q is wrong
C.	Statement P is wrong and statement Q is correct
D.	Statement P and Q both are wrong
Answer» D. Statement P and Q both are wrong

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43.	Statement – P : Interphase is divided in three sub phases. Statement – Q : G1 phase is the initial phase of interphase.
A.	Statement P and Q both are correct
B.	Statement P is correct statement Q is wrong
C.	Statement P is wrong and statement Q is correct
D.	Statement P and Q both are wrong
Answer» A. Statement P and Q both are correct

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44.	Statement – P : In ‘S’ stage centrosome is duplicated Statement – Q : In the prophase centrioles separate from each other and move towards the opposite poles.
A.	Statement P and Q both are correct
B.	Statement P is correct statement Q is wrong
C.	Statement P is wrong and statement Q is correct
D.	Statement P and Q both are wrong
Answer» C. Statement P is wrong and statement Q is correct

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45.	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.
A.	Both statements ‘X’ and ‘Y’ are correct
B.	‘X’ is correct and ‘Y’ is wrong
C.	Both statements ‘X’ and ‘Y’ are wrong
D.	‘X’ is wrong and ‘Y’ is correct
Answer» A. Both statements ‘X’ and ‘Y’ are correct

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46.	Match the following : Coulmn-I Coulmn-II (A) Prophase (i) Nuclear membrane and other orgenelles reorganise (B) Metaphase (ii) Arrangement of chromatids on the poles (C) Anaphase (iii) Formation of cytoplasmic fibres of proteins (D) Telophase (iv) Arranged on equatorial plane (E) Cytokinesis (v) The formation of syncytium
A.	(A - i) (B - ii) (C - iii) (D - iv) (E - v)
B.	(A - iii) (B - iv) (C - ii) (D - i) (E - v)
C.	(A - v) (B - iv) (C - iii) (D - ii) (E - i)
D.	(A - ii) (B - iii) (C - iv) (D - v) (E - i)
Answer» B. (A - iii) (B - iv) (C - ii) (D - i) (E - v)

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47.	Match the following : Coulmn-I Coulmn-II (A) Laptotene (i) Nucleolus disappears (B) Zygotence (ii) Appearance of recombination nodules (C) Pachytene (iii) Develoment of Synapsis (D) Diplotene (iv) Chromosome appears filamentous (E) Daikinesis (v) Genes exchange at chaismata
A.	(A - iv) (B - iii) (C - ii) (D - v) (E - i)
B.	(A - i) (B - ii) (C - iii) (D - iv) (E - v)
C.	(A - v) (B - iv) (C - iii) (D - ii) (E - i)
D.	(A - ii) (B - iii) (C - iv) (D - r) (E - i)
Answer» A. (A - iv) (B - iii) (C - ii) (D - v) (E - i)

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

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49.	Match the following : Coulmn-I Coulmn-II (A) Cytokinesis (i) Reformation of nuclear Membrane and golgi body (B) Metaphase (ii) Synthesis of RNA and protein (C) Telophase (iii) Centromers of chmosomes are arranged on equatorial plate. (D) Interphase (iv) Contraction of chomosomes starts (v) The formation of synctium
A.	(A - i) (B - ii) (C - iii) (D - iv)
B.	(A - iv) (B - iii) (C - i) (D - ii)
C.	(A - iv) (B - ii) (C - i) (D - iv)
D.	(A - iv) (B - iii) (C - ii) (D - i)
Answer» C. (A - iv) (B - ii) (C - i) (D - iv)

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50.	Select correct statement’s for cell cycle. (i) Yeast cell can complete on cell cycle in every 90 minutes (ii) A period between creation of a cell and division of that cell. (iii) Cell cycle is mainly divided into interphase and differentiation like two phases.
A.	(i) and (ii) only
B.	(i) and (iii) only
C.	(ii) and (iii) only
D.	(i), (ii) and (iii)
Answer» A. (i) and (ii) only

discuss

130+ Cell Cycle and Cell divisons Solved MCQs

Approximately how many cells are present in the body of an adult person ?

The period between two successive cell divisions in called........

Which is fundamental property of all living organisms ?

The two chromatids of a metaphase chromosome represents :

With how many cell reproduction starts ?

Which of the following is present in maximum number in an adult person ?

What is synthesized during G2 – phase ?

Synthesis of RNA and protein takes place in which phase of the cell cycle ?

During which phase can nucleolus be observed clearly ?

Which structure can be observed at the surface of centromere during metaphase ?

Mitosis actually means……

The role of mitosis is not merely to divide a cell into two daugher cells but to ensure genetic continuity from one cell generation. The mechanism ensuring genetic continutity is;

Substances that interface with microtubule function interfare with cell division because....

The stage of mitosis during which the nucleolus disintegrates and chromosomes appear is known as

Chromosomes can be counted during :

The nuclear membrane disintegrates and spindle appears at :

The separation of two chomatids of each chromosome during early anaphase is initiated by :

The telophase stage of mitosis is…….

The term ‘karyokinesis’ is used for….

How many mitotic divisions must occur in a cell to form 1024 cells ?

The difference in the division of a plant cell and animal cell is in.....

During which phase of prophase-I of meiosis does the process of synapsis occur ?

In mitosis the daughter cells resemble to their parent cell. But in meiosis they differ not only from parent cell in having half the number of chromosomes, but also differ among themselves qualitatively in genetic constitution due to.....

Which is the longest phase of meitoic division ?

At which stage, the homologous chromosomes separate due to repulsion, but are yet held by chiasmata :

If there are four chromosomes present during prophase – I, how many chromosome are there in each cell at the end of anaphase - II

Meiosis – II is :

Significance of meiosis is associated with :

The minimum number of meiotic divisions required to obtain 100 pollen grain of wheat is.....

The number of meiotic divisions required to produce 400 seeds in a pea plant is.....

Significance of meiosis.........

In which of the following matters mitosis and meiosis are similar ?

During which of the following phases of mitosis asters appear around the centroles ?

During which stage of meiosis crossing over takes place ?

At which of the following stage4s of cell cycle proteins and microtubules, required for mitosis, are synthesized ?

If the initial amout of DNA is denoted as 2C then it increases into :

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

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

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

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.

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

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

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

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

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.

Match the following : Coulmn-I Coulmn-II (A) Laptotene (i) Nucleolus disappears (B) Zygotence (ii) Appearance of recombination nodules (C) Pachytene (iii) Develoment of Synapsis (D) Diplotene (iv) Chromosome appears filamentous (E) Daikinesis (v) Genes exchange at chaismata

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

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

Match the following :
Coulmn-I Coulmn-II
(A) Laptotene (i) Nucleolus disappears
(B) Zygotence (ii) Appearance of recombination nodules
(C) Pachytene (iii) Develoment of Synapsis
(D) Diplotene (iv) Chromosome appears filamentous
(E) Daikinesis (v) Genes exchange at chaismata

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

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