Question 1: Palette 1/83

NEET 2026 MCQ

$ \text { Match List I with List II : } $

List-I (Phase of cell cycle)		List-II (Activity)
A.	$\mathrm{G}_1$ phase	I.	Actual cell division occurs
B.	S phase	II.	Cell is metabolically active and continuously grows but does not replicate its DNA
C.	$\mathrm{G}_2$ Phase	III.	Synthesis of DNA occurs and the amount of DNA per cell doubles
D.	M phase	IV.	Proteins are synthesized while cell growth continues

Choose the correct answer from the options given below :

A

A-IV, B-I, C-II, D-III

B

A-I, B-II, C-III, D-IV

C

A-III, B-IV, C-I, D-II

D

A-II, B-III, C-IV, D-I

Question 2: Palette 2/83

NEET 2026 MCQ

Given below are two statements :

Statement I : Chromosomes are fully condensed at the end of prophase I.

Statement II : Meiosis I resembles mitosis.

In the light of the above statements, choose the most appropriate answer from the options given below :

A

Statement I is incorrect, but Statement II is true

B

Both Statement I and Statement II are true

C

Both Statement I and Statement II are false

D

Statement I is correct, but Statement II is false

Question 3: Palette 3/83

NEET 2026 MCQ

The correct sequence of adult cell cycle phases is $\_\_\_\_$ .

A

S-M-G2-G1

B

G1-G2-S-M

C

G1-M-G2-S

D

G1-S-G2-M

Question 4: Palette 4/83

NEET 2025 MCQ

What is the main function of the spindle fibers during mitosis?

A

To repair damaged DNA

B

To regulate cell growth

C

To separate the chromosomes

D

To synthesize new DNA

Question 5: Palette 5/83

NEET 2024 MCQ

Given below are two statements:

Statement I: Failure of segregation of chromatids during cell cycle resulting in the gain or loss of whole set of chromosome in an organism is known as aneuploidy.

Statement II: Failure of cytokinesis after anaphase stage of cell division results in the gain or loss of a chromosome is called polyploidy.

In the light of the above statements, choose the correct answer from the options given below:

A

Statement I is true but Statement II is false

B

Statement I is false but Statement II is true

C

Both Statement I and Statement II are true

D

Both Statement I and Statement II are false

Question 6: Palette 6/83

NEET 2024 MCQ

Recombination between homologous chromosomes is completed by the end of

A

Diakinesis

B

Zygotene

C

Diplotene

D

Pachytene

Question 7: Palette 7/83

NEET 2024 MCQ

Match List-I with List-II :

	List - I		List - II
(A)	Metacentric chromosome	(I)	Chromosome has a terminal centromere
(B)	Sub-metacentric chromosome	(II)	Middle centromere forming two equal arms of chromosome
(C)	Acrocentric chromosome	(III)	Centromere is slightly away from the middle of chromosome resulting into two unequal arms
(D)	Telocentric chromosome	(IV)	Centromere is situated close to its end forming one extremely short and one very long arm

Choose the correct answer from the options given below:

A

A-II, B-I, C-IV, D-III

B

A-IV, B-I, C-II, D-III

C

A-I, B-II, C-III, D-IV

D

A-II, B-III, C-IV, D-I

Question 8: Palette 8/83

NEET 2024 MCQ

Match List-I with List-II.

	List - I Event		List - II Stage of Prophase-I (Meiosis-I)
(A)	Chiasmata formation	(I)	Pachytene
(B)	Crossing over	(II)	Diakinesis
(C)	Synaptonemal complex formation	(III)	Diplotene
(D)	Terminalisation of chiasmata	(IV)	Zygotene

Choose the correct answer from the options given below :

A

A-III, B-I, C-IV, D-II

B

A-II, B-I, C-III, D-IV

C

A-III, B-I, C-II, D-IV

D

A-II, B-III, C-IV, D-I

Question 9: Palette 9/83

NEET 2024 MCQ

Match List-I with List-II.

	List - I		List - II
(A)	Cells are metabolically active and proliferate	(I)	G$_2$ phase
(B)	DNA replication takes place	(II)	G$_1$ phase
(C)	Proteins are synthesised	(III)	G$_0$ phase
(D)	Quiescent stage with metabolically active cells	(IV)	S phase

Choose the correct answer from the options given below:

A

A-IV, B-II, C-III, D-I

B

A-I, B-III, C-IV, D-II

C

A-I, B-I, C-III, D-IV

D

A-II, B-IV, C-I, D-III

Question 10: Palette 10/83

NEET 2024 MCQ

Spindle fibers attach to kinetochores of chromosomes during

A

Prophase

B

Metaphase

C

Anaphase

D

Telophase

Question 11: Palette 11/83

NEET 2024 MCQ

Given below are two statements:

Statement I : Chromosomes become gradually visible under light microscope during leptotene stage.

Statement II : The beginning of diplotene stage is recognized by dissolution of synaptonemal complex.

In the light of the above statements, choose the correct answer from the options given below:

A

Both Statement I and Statement II are true

B

Both Statement I and Statement II are false

C

Statement I is true but Statement II is false

D

Statement I is false but Statement II is true

Question 12: Palette 12/83

NEET 2024 MCQ

Following are the stages of cell division :

A. Gap 2 phase

B. Cytokinesis

C. Synthesis phase

D. Karyokinesis

E. Gap 1 phase

Choose the correct sequence of stages from the options given below :

A

C-E-D-A-B

B

E-B-D-A-C

C

B-D-E-A-C

D

E-C-A-D-B

Question 13: Palette 13/83

NEET 2024 MCQ

Match List I with List II :

	List - I (Sub Phases of Prophase I)		List - II (Specific Characters)
A.	Diakinesis	I.	Synaptonemal complex formation
B.	Pachytene	II.	Completion of terminalisation of chiasmata
C.	Zygotene	III.	Chromosomes look like thin threads
D.	Leptotene	IV.	Appearance of recombination nodules

Choose the correct answer from the options given below

A

A-IV, B-II, C-III, D-I

B

A-I, B-II, C-IV, D-III

C

A-II, B-IV, C-I, D-III

D

A-IV, B-III, C-II, D-I

Question 14: Palette 14/83

NEET 2023 MCQ

The dissolution of synaptonemal complex occurs during :

A

Pachytene

B

Diplotene

C

Diakinesis

D

Leptotene

Question 15: Palette 15/83

NEET 2023 MCQ

Doubling of the number of chromosomes can be achieved by disrupting mitotic cell division soon after :

A

Anaphase

B

Telophase

C

Prophase

D

Metaphase

Question 16: Palette 16/83

NEET 2023 MCQ

During which stages of mitosis and meiosis, respectively does the centromere of each chromosome split ?

A

Mataphase, Metaphase II

B

Prophase, Telophase I

C

Telophase, Anaphase I

D

Anaphase, Anaphase II

Question 17: Palette 17/83

NEET 2023 MCQ

Which one of the following is the quiescent stage of cell cycle?

A

M

B

G$_2$

C

G$_1$

D

G$_0$

Question 18: Palette 18/83

NEET 2023 MCQ

Select correct sequence of substages of Prophase-I of Meiotic division :

(A) Zygotene

(B) Pachytene

(C) Diakinesis

(D) Leptotene

(E) Diplotene

Choose the correct answer from the options given below :

A

(D), (B), (A), (E), (C)

B

(A), (B), (D), (E), (C)

C

(D), (A), (B), (E), (C)

D

(A), (D), (B), (C), (E)

Question 19: Palette 19/83

NEET 2023 MCQ

The process of appearance of recombination nodules occurs at which sub stage of prophase I in meiosis?

A

Pachytene

B

Diplotene

C

Diakinesis

D

Zygotene

Question 20: Palette 20/83

NEET 2023 MCQ

Which of the following stages of meiosis involves division of centromere?

A

Metaphase II

B

Anaphase II

C

Telophase

D

Metaphase I

Question 21: Palette 21/83

NEET 2023 MCQ

Among eukaryotes, replication of DNA takes place in :

A

S phase

B

G₁ phase

C

G₂ phase

D

M phase

Question 22: Palette 22/83

NEET 2023 MCQ

Match List I with List II:

	List I		List II
(A)	M Phase	(I)	Proteins are synthesized
(B)	G$_2$ Phase	(II)	Inactive phase
(C)	Quiescent stage	(III)	Interval between mitosis and initiation of DNA replication
(D)	G$_1$ Phase	(IV)	Equational division

Choose the correct answer from the options given below :

A

A-IV, B-II, C-I, D-III

B

A-IV, B-I, C-II, D-III

C

A-II, B-IV, C-I, D-III

D

A-III, B-II, C-IV, D-I

Question 23: Palette 23/83

NEET 2023 MCQ

Select the correct statements.

A. Tetrad formation is seen during Leptotene.

B. During Anaphase, the centromeres split and chromatids separate.

C. Terminalization takes place during Pachytene.

D. Nucleolus, Golgi complex and ER are reformed during Telophase.

E. Crossing over takes place between sister chromatids of homologous chromosome.

Choose the correct answer from the options given below:

A

B and D only

B

A, C and E only

C

B and E only

D

A and C only

Question 24: Palette 24/83

NEET 2023 MCQ

Given below are two statements:

Statement I : During G₀ phase of cell cycle, the cell is metabolically inactive.

Statement II : The centrosome undergoes duplication during S phase of interphase.

In the light of the above statements, choose the most appropriate answer from the options given below:

A

Both Statement I and Statement II are incorrect.

B

Statement I is correct but Statement II is incorrect.

C

Statement I is incorrect but Statement II is correct.

D

Both Statement I and Statement II are correct.

Question 25: Palette 25/83

NEET 2022 MCQ

Which stage of meiosis can last for months or years in the oocytes of some vertebrates?

A

Diakinesis

B

Leptotene

C

Pachytene

D

Diplotene

Question 26: Palette 26/83

NEET 2022 MCQ

Identify the correct sequence of events during Prophase I of meiosis:

(a) Synapsis of homologous chromosomes

(b) Chromosomes become gradually visible under microscope

(c) Crossing over between non-sister chromatids of homologous chromosomes

(d) Terminalisation of chiasmata

(e) Dissolution of synaptonemal complex

Choose the correct answer from the options given below:

A

(a), (c), (d), (e), (b)

B

(a), (b), (c), (d), (e)

C

(b), (c), (d), (e), (a)

D

(b), (a), (c), (e), (d)

Question 27: Palette 27/83

NEET 2022 MCQ

Bivalent or Tetrad formation is a characteristic feature observed during

A

Chiasmata in zygotene stage

B

Synaptonemal complex in zygotene stage

C

Chiasmata in Diplotene stage

D

Synaptonemal complex in Pachytene stage

Question 28: Palette 28/83

NEET 2022 MCQ

With respect to metaphase, which of the following statements is incorrect?

A

Chromosomes lie at the equator of the cell

B

Complete disintegration of nuclear envelope takes place

C

Chromosomes are highly condensed

D

Metaphase chromosomes are made up of four sister chromatids held together by centromere

Question 29: Palette 29/83

NEET 2022 MCQ

Which one of the following never occurs during mitotic cell division?

A

Spindle fibres attach to kinetochores of chromosomes

B

Movement of centrioles towards opposite poles

C

Pairing of homologous chromosomes

D

Coiling and condensation of the chromatids

Question 30: Palette 30/83

NEET 2022 MCQ

The appearance of recombination nodules on homologous chromosomes during meiosis characterizes:

A

Synaptonemal complex

B

Bivalent

C

Sites at which crossing over occurs

D

Terminalization

Question 31: Palette 31/83

NEET 2022 MCQ

Match List I with List II.

	List - I		List - II
(a)	Metacentric chromosome	(i)	Centromere situated close to the end forming one extremely short and one very long arms
(b)	Acrocentric chromosome	(ii)	Centromere at the terminal end
(c)	Submetacentric	(iii)	Centromere in the middle forming two equal arms of chromosomes
(d)	Telocentric chromosome	(iv)	Centromere slightly away from the middle forming one shorter arm and one longer arm

Choose the correct answer from the options given below:

A

(a)-(iii), (b)-(i), (c)-(iv), (d)-(ii)

B

(a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)

C

(a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

D

(a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)

Question 32: Palette 32/83

NEET 2022 MCQ

Regarding Meiosis, which of the statements is incorrect?

A

There are two stages in Meiosis, Meiosis-I and II

B

DNA replication occurs in S phase of Meiosis-II

C

Pairing of homologous chromosomes and recombination occurs in Meiosis-I

D

Four haploid cells are formed at the end of Meiosis-II

Question 33: Palette 33/83

NEET 2022 MCQ

Select the incorrect statement with reference to mitosis :

A

All the chromosomes lie at the equator at metaphase

B

Spindle fibres attach to centromere of chromosomes

C

Chromosomes decondense at telophase

D

Splitting of centromere occurs at anaphase

Question 34: Palette 34/83

NEET 2021 MCQ

Which of the following stages of meiosis involves division of centromere?

A

Telophase II

B

Metaphase I

C

Metaphase II

D

Anaphase II

Question 35: Palette 35/83

NEET 2021 MCQ

Match List-I with List-II.

	List-I		List-II
(a)	S phase	(i)	Proteins are synthesized
(b)	${G_2}$ phase	(ii)	Inactive phase
(c)	Quiescent stage	(iii)	Interval between mitosis and initiation of DNA replication
(d)	${G_1}$ phase	(iv)	DNA replication

Choose the correct answer from the options given below.

A

(a)	(b)	(c)	(d)
(ii)	(iv)	(iii)	(i)

B

(a)	(b)	(c)	(d)
(iii)	(ii)	(i)	(iv)

C

(a)	(b)	(c)	(d)
(iv)	(ii)	(iii)	(i)

D

(a)	(b)	(c)	(d)
(iv)	(i)	(ii)	(iii)

Question 36: Palette 36/83

NEET 2021 MCQ

The fruit fly has 8 chromosomes (2n) in each cell. During interphase of Mitosis if the number of chromosomes at G₁ phase is 8, what would be the number of chromosomes after S phase?

A

32

B

8

C

16

D

4

Question 37: Palette 37/83

NEET 2021 MCQ

Which stage of meiotic prophase shows terminalisation of chiasmata as its distinctive feature?

A

Pachytene

B

Leptotene

C

Zygotene

D

Diakinesis

Question 38: Palette 38/83

NEET 2021 MCQ

The centriole undergoes duplication during :

A

G₂ phase

B

S-phase

C

Prophase

D

Metaphase

Question 39: Palette 39/83

NEET 2020 MCQ

Some dividing cells exit the cell cycle and enter vegetative inactive stage. This is called quiescent stage (G₀). This process occurs at the end of

A

G₁ phase

B

S phase

C

G₂ phase

D

M phase

Question 40: Palette 40/83

NEET 2020 MCQ

Match the following with respect to meiosis

(A) Zygotene      (i) Terminalization
(B) Pachytene     (ii) Chiasmata
(C) Diplotene      (iii) Crossing over
(D) Diakinesis     (iv) Synapsis

Select the correct option from the following

A

(A) $ \to $ (iv), (B) $ \to $ (iii), (C) $ \to $ (ii), (D) $ \to $ (i)

B

(A) $ \to $ (iii), (B) $ \to $ (iv), (C) $ \to $ (i), (D) $ \to $ (ii)

C

(A) $ \to $ (i), (B) $ \to $ (ii), (C) $ \to $ (iv), (D) $ \to $ (iii)

D

(A) $ \to $ (ii), (B) $ \to $ (iv), (C) $ \to $ (iii), (D) $ \to $ (i)

Question 41: Palette 41/83

NEET 2020 MCQ

Dissolution of the synaptonemal complex occurs during

A

Diplotene

B

Zygotene

C

Pachytene

D

Leptotene

Question 42: Palette 42/83

NEET 2020 MCQ

Identify the correct statement with regard to G₁ phase (Gap 1) of interphase

A

Cell is metabolically active, grows but does not replicate its DNA.

B

DNA synthesis or replication takes place.

C

Nuclear Division takes place.

D

Reorganisation of all cell components takes place.

Question 43: Palette 43/83

NEET 2019 MCQ

Cells in G₀ phase :

A

suspend the cell cycle

B

terminate the cell cycle

C

exit the cell cycle

D

enter the cell cycle

Question 44: Palette 44/83

NEET 2019 MCQ

The correct sequence of phases of cell cycle is :

A

S $ \to $ G₁ $ \to $ G₂ $ \to $ M

B

G₁ $ \to $ S $ \to $ G₂ $ \to $ M

C

M $ \to $ G₁ $ \to $ G₂ $ \to $ S

D

G₁ $ \to $ G₂ $ \to $ S $ \to $ M

Question 45: Palette 45/83

NEET 2018 MCQ

The stage during which separation of the paired homologous chromosomes begins is

A

zygotene.

B

pachytene

C

diplotene

D

diakinesis

Question 46: Palette 46/83

NEET 2017 MCQ

Anaphase Promoting Complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cell. If APC is defective in a human cell, which of the following is expected to occur?

A

Chromosomes will be fragmented.

B

Chromosomes will not segregate.

C

Recombination of chromosome arms will occur.

D

Chromosomes will not condense.

Question 47: Palette 47/83

NEET 2017 MCQ

Which of the following options gives the correct sequence of events during mitosis?

A

Condensation $ \to $   Nuclear membrane disassembly $ \to $ Arrangement at equator $ \to $ Centromere division $ \to $ Segregation $ \to $ Telophase

B

Condensation $ \to $ Crossing over $ \to $ Nuclear membrane disassembly $ \to $ Segregation $ \to $ Telophase

C

Condensation $ \to $ Arrangement at equator $ \to $ Centromere division $ \to $ Segregation $ \to $ Telophase

D

Condensation $ \to $ Nuclear membrane disassembly $ \to $ Crossing over $ \to $ Segregation $ \to $ Telophase

Question 48: Palette 48/83

NEET 2016 MCQ

Match the stages of meiosis in column I to their characteristic features in column II and select the correct option using the codes given below.

Column ${\rm I}$		Column ${\rm I}$${\rm I}$
A.	Pachytene	(i)	Pairing of homologous chromosomes
B.	Metaphase ${\rm I}$	(ii)	Terminalisation of chiasmata
C.	Diakinesis	(iii)	Crossing-over takes place
D.	Zygotene	(iv)	Chromosomes align at equatorial plate

A

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

B

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

C

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

D

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

Question 49: Palette 49/83

NEET 2016 MCQ

When cell has stalled DNA replication fork, which checkpoint should be predominantly activated?

A

G₁/S

B

G₂/M

C

M

D

Both G₂/M and M

Question 50: Palette 50/83

NEET 2016 MCQ

During cell growth, DNA synthesis takes place on

A

S-phase

B

G₁-phase

C

G₂-phase

D

M phase

Question 51: Palette 51/83

NEET 2016 MCQ

Which of the following is not a characteristic feature during mitosis in somatic cells?

A

Chromosome movement

B

Synapsis

C

Spindle fibres

D

Disappearance of nucleolus

Question 52: Palette 52/83

NEET 2016 MCQ

Spindle fibres attach on to

A

centromere of the chromosome

B

kinetosome of the chromosome

C

telomere of the chromosome

D

kinetochore of the chromosome.

Question 53: Palette 53/83

NEET 2016 MCQ

In meiosis crossing over is initiated at

A

zygotene

B

diplotene

C

pachytene

D

leptotene.

Question 54: Palette 54/83

NEET 2015 MCQ

Arrange the following events of meiosis in correct sequence
(i)  Crossing over
(ii)  Synapsis
(iii)  Terminalisation of chiasmata
(iv)  Disappearance of nucleolus

A

(i), (ii), (iii), (iv)

B

(ii), (iii), (iv), (i)

C

(ii), (i), (iv), (iii)

D

(ii), (i), (iii), (iv)

Question 55: Palette 55/83

NEET 2015 MCQ

Select the correct option.

Column ${\rm I}$			Column ${\rm I}$${\rm I}$
A.	Synapsis aligns homologous		(i)	Anaphase ${\rm I}$${\rm I}$
B.	Synthesis of RNA and protein		(ii)	Zygotene
C.	Action of enzymes recombinase		(iii)	G2-phase
D.	Centromeres do not separate but chromatids move towards opposite poles		(iv)	Anaphase ${\rm I}$
			(v)	Pachytene

A

(A) - (i);  (B) - (ii);  (C) - (v);  (D) - (iv)

B

(A) - (ii);  (B) - (iii);  (C) - (iv);  (D) - (v)

C

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

D

(A) - (ii);  (B) - (iii);  (C) - (v);  (D) - (iv)

Question 56: Palette 56/83

NEET 2015 MCQ

A somatic cell that has just completed the S phase of its cell cycle, as compared to gamete of the same species, has

A

twice the number of chromosomes and four times the amount of DNA

B

four times the number of chromosomes and twice the amount of DNA

C

twice the number of chromosomes and twice the amount of DNA

D

same number of chromosomes but twice the amount of DNA.

Question 57: Palette 57/83

NEET 2014 MCQ

During which phase(s) of cell cycle, amount of DNA in a cell remains at 4C level if the initial amount is denoted as 2C?

A

G₀ and G₁

B

G₁ and S

C

Only G₂

D

G₂ and M

Question 58: Palette 58/83

NEET 2014 MCQ

The enzyme recombinase is required at which stage of meiosis?

A

Pachytene

B

Zygotene

C

Diplotene

D

Diakinesis

Question 59: Palette 59/83

NEET 2014 MCQ

In 'S' phase of the cell cycle

A

amount of DNA doubles in each cell

B

amount of DNA remains same in each cell

C

chromosomes number is increased

D

amount of DNA is reduced to half in each cell.

Question 60: Palette 60/83

NEET 2013 MCQ

During meiosis I, the chromosomes start pairing at

A

zygotene

B

pachytene

C

diplotene

D

leptotene.

Question 61: Palette 61/83

NEET 2013 MCQ

During the metaphase stage of mitosis, spindle fibres attach to chromosomes at

A

kinetochore

B

both centromere and kinetochore

C

centromere, kinetochore and areas adjoining centromere

D

centromere.

Question 62: Palette 62/83

NEET 2013 MCQ

A stage of mitosis is shown in the diagram.
Which stage is it and what are its characteristics?

A

Anaphase - Centromeres split and chromatids separate and start moving away.

B

Late prophase - Chromosomes move to spindle equator.

C

Metaphase - Spindle fibers attached to kinetochores, centromeres split and chromatids separate.

D

Metaphase - Chromosomes moved to spindle equator, chromosomes made up of two sister chromatids.

Question 63: Palette 63/83

NEET 2013 MCQ

The complex formed by a pair of synapsed homologous chromosomes is called

A

bivalent

B

axoneme

C

equatorial plate

D

kinetochore.

Question 64: Palette 64/83

NEET 2013 MCQ

A stage in cell division is shown in the figure. Select the answer which gives correct identification of the stage with its characteristics.

A

Telophase         Endoplasmic reticulum and nucleolus not reformed yet.

B

Telophase         Nuclear envelope reforms,Golgi complex reforms.

C

Late anaphase         Chromosomes move away from equatorial plate, Golgi complex not present.

D

Cytokinesis         Cell plate formed, mitochondria distributed between two daughter cells.

Question 65: Palette 65/83

NEET 2012 MCQ

Identify the meiotic stage in which the homologous chromosomes separate while the sister chromatids remain associated at their centromeres.

A

Metaphase I

B

Metaphase II

C

Anaphase I

D

Anaphase II

Question 66: Palette 66/83

NEET 2012 MCQ

Given below is the representation of a certain event at a particular stage of a type of cell division. Which is this stage?

A

Prophase of Mitosis

B

Both prophase and metaphase of mitosis

C

Prophase I during meiosis

D

Prophase -II during meiosis

Question 67: Palette 67/83

NEET 2012 MCQ

During gamete formation, the enzyme recombinase participates during

A

metaphase I

B

anaphase II

C

prophase I

D

prophase II.

Question 68: Palette 68/83

NEET 2011 MCQ

At metaphase, chromosomes are attached to the spindle fibres by their

A

satellites

B

secondary constrictions

C

kinetochores

D

centromeres.

Question 69: Palette 69/83

NEET 2011 MCQ

Select the correct option with respect to mitosis.

A

Chromatids separate but remain in the centre of the cell in anaphase

B

Chromatids start moving towards opposite poles in telophase

C

Golgi complex and endoplasmic reticulum are still visible at the end of prophase.

D

Chromosomes move to the spindle equator and get aligned along equatorial plate in metaphase.

Question 70: Palette 70/83

NEET 2010 MCQ

During mitosis, ER and nucleolus begin to disappear at

A

late prophase

B

early metaphase

C

late metaphase

D

early prophase.

Question 71: Palette 71/83

NEET 2010 MCQ

Which stages of cell division do the following figures A and B represent respectively?

A

A $ \to $ Prophase, B $ \to $ Anaphase

B

A $ \to $ Metaphase, B $ \to $ Telophase

C

A $ \to $ Telophase, B $ \to $ Metaphase

D

A $ \to $ Late anaphase, B $ \to $ Prophase

Question 72: Palette 72/83

NEET 2009 MCQ

Given below is a schematic break-up of the phases/stages of cell cycle. Which one of the following is the correct indication of the stage/phase in the cell cycle?

A

C - karyokinesis

B

D - synthetic phase

C

A - cytokinesis

D

B - metaphase

Question 73: Palette 73/83

NEET 2009 MCQ

Synapsis occurs between

A

mRNA and ribosomes

B

spindle fibres and centromere

C

two homologous chromosomes

D

a male and a female gamete.

Question 74: Palette 74/83

NEET 2005 MCQ

At what stage of the cell cycle are histone proteins synthesized in a eukaryotic cell?

A

During G₂ stage of prophase

B

During S-phase

C

During entire prophase

D

During telophase

Question 75: Palette 75/83

NEET 2004 MCQ

In the somatic cell cycle

A

in G₁ phase DNA content is double the amount of DNA present in the original cell

B

DNA replication takes place in S phase

C

a short interphase is followed by a long mitotic phase

D

G₂ phase follows mitotic phase.

Question 76: Palette 76/83

NEET 2004 MCQ

If you are provided with root-tips of onion in your class and are asked to count the chromosomes, which of the following stages can you most conveniently look into?

A

Metaphase

B

Telophase

C

Anaphase

D

Prophase

Question 77: Palette 77/83

NEET 2004 MCQ

Which one of the following precedes reformation of the nuclear envelope during M phase of the cell cycle?

A

Decondensation fromchromosomes. and reassembly of the nuclear lamina

B

Transcription from chromosomes, and reassembly of the nuclear lamina

C

Formation of the contractile ring, and formation of the phragmoplast

D

Formation of the contractile ring, and transcription from chromosomes.

Question 78: Palette 78/83

NEET 2002 MCQ

What is the reason of formation of embryoid from pollen grain in tissue culture medium ?

A

Double fertilization

B

Test tube culture

C

Cellular totipotency

D

Organogenesis

Question 79: Palette 79/83

NEET 2002 MCQ

If a diploid cell is treated with colchicine then it becomes : -

A

Tetraploid

B

Monoploid

C

Diploid

D

Triploid

Question 80: Palette 80/83

NEET 2002 MCQ

Best material for the study of mitosis in laboratory is

A

anther

B

root tip

C

leaf tip

D

ovary.

Question 81: Palette 81/83

NEET 2002 MCQ

Mitotic spindle is mainly composed of which protein?

A

Actin

B

Myosin

C

Tubulin

D

Myoglobin

Question 82: Palette 82/83

NEET 2000 MCQ

Spindle fibre unite with which structure of chromosomes?

A

Chromocentre

B

Chromomere

C

kinetochore

D

Centriole

Question 83: Palette 83/83

NEET 2000 MCQ

In which stage of cell cycle, DNA replication occurs?

A

G₁-phase

B

S-phase

C

G₂-phase

D

M-phase