Cell Cycle and Cell Division

Class 11

26 previous-year questions from this chapter every option and the correct answer, free · where the marks are

1. Phases of the cell cycle

Exam focus: S phase doubles the DNA content but not the chromosome number — each chromosome simply gains a second sister chromatid, so the count only changes once anaphase splits the centromeres. Resist calling G1 and G2 empty "gaps": both are long, active periods of growth and synthesis, not pauses.

Cell Cycle and Cell Division — Full Chapter

Vedantu NEET English

Full one-shot covering the whole Cell Cycle & Cell Division chapter (interphase, M-phase, mitosis, meiosis) using 3D visualisations; not a standalone video on just the phases, but covers them thoroughly within the larger lecture.

ZoologyNEET 2024show ▾

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.E-B-D-A-C
B.B-D-E-A-C
C.E-C-A-D-B✓
D.C-E-D-A-B

Solution

The cell cycle runs $G_{1} \to S \to G_{2} \to M$ , and M phase is karyokinesis followed by cytokinesis: E, C, A, D, B.

Open this question on its own page →

Save for spaced revision (free account)

BotanyNEET 2023show ▾

Among eukaryotes, replication of DNA takes place in:

A.M phase
B.S phase✓
C. $G_{1}$ phase
D. $G_{2}$ phase

The worked solution is part of a paid pack.

Open this question on its own page →

BotanyNEET 2023show ▾

Match List I with List II.

List I	List II
A. M phase	I. Proteins are synthesised
$B . G_{2}$ 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-III, B-II, C-IV, D-I
B.A-IV, B-II, C-I, D-III
C.A-IV, B-I, C-II, D-III✓
D.A-II, B-IV, C-I, D-III

The worked solution is part of a paid pack.

Open this question on its own page →

ZoologyNEET 2023show ▾

Given below are two statements: Statement I: During the

G_{0}

phase of the cell cycle, the cell is metabolically inactive. Statement II: The centrosome undergoes duplication during the 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 correct
B.Both Statement I and Statement II are incorrect.
C.Statement I is correct but Statement II is incorrect.
D.Statement I is incorrect but Statement II is correct.✓

The worked solution is part of a paid pack.

Open this question on its own page →

ZoologyNEET 2021show ▾

The fruit fly has 8 chromosomes (

2 n

) in each cell. During interphase of mitosis, if the number of chromosomes at

G_{1}

phase is 8, what would be the number of chromosomes after S phase?

A.8✓
B.16
C.4
D.32

The worked solution is part of a paid pack.

Open this question on its own page →

ZoologyNEET 2021show ▾

The centriole undergoes duplication during:

A.S phase✓
B.Prophase
C.Metaphase
D. $G_{2}$ phase

The worked solution is part of a paid pack.

Open this question on its own page →

BotanyNEET 2021show ▾

Match List-I with List-II.

List-I	List-II
(a) S phase	(i) Proteins are synthesised
(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)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
B.(a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)
C.(a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)✓
D.(a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)

The worked solution is part of a paid pack.

Open this question on its own page →

BotanyNEET 2020show ▾

Some dividing cells exit the cell cycle and enter a vegetative, inactive stage. This is called the quiescent stage (

G_{0}

). This process occurs at the end of:

A.M phase
B. $G_{1}$ phase✓
C.S phase
D. $G_{2}$ phase

The worked solution is part of a paid pack.

Open this question on its own page →

BotanyNEET 2020show ▾

Identify the correct statement with regard to the

G_{1}

phase (Gap 1) of interphase.

A.DNA synthesis or replication takes place
B.Reorganisation of all cell components takes place
C.The cell is metabolically active and grows, but does not replicate its DNA✓
D.Nuclear division takes place

The worked solution is part of a paid pack.

Open this question on its own page →

BotanyNEET 2019show ▾

A cell in the

G_{0}

phase:

A.Exits the cell cycle
B.Enters the cell cycle
C.Suspends the cell cycle✓
D.Terminates the cell cycle

The worked solution is part of a paid pack.

Open this question on its own page →

BotanyNEET 2019show ▾

The correct sequence of phases of the cell cycle is:

A. $M \to G_{1} \to G_{2} \to S$
B. $G_{1} \to G_{2} \to S \to M$
C. $S \to G_{1} \to G_{2} \to M$
D. $G_{1} \to S \to G_{2} \to M$ ✓

The worked solution is part of a paid pack.

Open this question on its own page →

2. Mitosis

Exam focus: Mitosis isn't restricted to diploid cells the way meiosis is — plenty of haploid cells, in fungi, algae and gametophyte tissue, divide mitotically too, since mitosis only has to copy whatever chromosome number is already present, never halve it.

Cell Cycle and Cell Division — Full Chapter

Vedantu NEET English

Same bundled one-shot; mitosis (prophase through cytokinesis, animal vs plant cell division) is covered in detail within it.

3. Meiosis and its significance

Exam focus: Only meiosis I actually reduces the chromosome number, by separating homologous pairs; meiosis II is mechanically just mitosis run on haploid cells, separating sister chromatids without reducing anything further. Treating both divisions as equally "reductional" is the recurring error.

Cell Cycle and Cell Division — Full Chapter

Vedantu NEET English

Same bundled one-shot; meiosis and its significance are covered as the concluding section of this chapter lecture, not as a separate dedicated video.

BotanyNEET 2024show ▾

Given below are two statements: Statement I: Chromosomes become gradually visible under the light microscope during the leptotene stage. Statement II: The beginning of the diplotene stage is recognised by the dissolution of the 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 false
B.Statement I is true but Statement II is false
C.Statement I is false but Statement II is true
D.Both Statement I and Statement II are true✓

Solution

Chromosomes first become visible as thin threads in leptotene (I true); diplotene begins with dissolution of the synaptonemal complex, leaving chiasmata (II true).

Open this question on its own page →

Save for spaced revision (free account)

ZoologyNEET 2024show ▾

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

Solution

Diakinesis: terminalisation of chiasmata (II). Pachytene: recombination nodules appear (IV). Zygotene: synaptonemal complex forms (I). Leptotene: chromosomes look like thin threads (III).

Open this question on its own page →

Save for spaced revision (free account)

BotanyNEET 2023show ▾

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

A.Metaphase I
B.Metaphase II
C.Anaphase II✓
D.Telophase

The worked solution is part of a paid pack.

Open this question on its own page →

ZoologyNEET 2023show ▾

Select the correct statements. A. Tetrad formation is seen during leptotene. B. During anaphase, the centromeres split and chromatids separate. C. Terminalisation takes place during pachytene. D. The nucleolus, Golgi complex and ER are reformed during telophase. E. Crossing over takes place between sister chromatids of homologous chromosomes. Choose the correct answer from the options given below:

A.A and C only
B.B and D only✓
C.A, C and E only
D.B and E only

The worked solution is part of a paid pack.

Open this question on its own page →

BotanyNEET 2023show ▾

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

A.Zygotene
B.Pachytene✓
C.Diplotene
D.Diakinesis

The worked solution is part of a paid pack.

Open this question on its own page →

ZoologyNEET 2022show ▾

Regarding meiosis, which of the statements is incorrect?

A.Four haploid cells are formed at the end of meiosis II
B.There are two stages in meiosis, meiosis I and II
C.DNA replication occurs in the S phase of meiosis II✓
D.Pairing of homologous chromosomes and recombination occur in meiosis I

The worked solution is part of a paid pack.

Open this question on its own page →

BotanyNEET 2022show ▾

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

A.Terminalisation
B.Synaptonemal complex
C.Bivalent
D.Sites at which crossing over occurs✓

The worked solution is part of a paid pack.

Open this question on its own page →

ZoologyNEET 2021show ▾

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

A.Leptotene
B.Zygotene
C.Diakinesis✓
D.Pachytene

The worked solution is part of a paid pack.

Open this question on its own page →

BotanyNEET 2021show ▾

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

A.Metaphase I
B.Metaphase II
C.Anaphase II✓
D.Telophase II

The worked solution is part of a paid pack.

Open this question on its own page →

BotanyNEET 2020show ▾

Dissolution of the synaptonemal complex occurs during:

A.Pachytene
B.Zygotene
C.Diplotene✓
D.Leptotene

The worked solution is part of a paid pack.

Open this question on its own page →

BotanyNEET 2020show ▾

Match the following with respect to meiosis.

Stage	Feature
(a) Zygotene	(i) Terminalisation
(b) Pachytene	(ii) Chiasmata
(c) Diplotene	(iii) Crossing over
(d) Diakinesis	(iv) Synapsis

Select the correct option:

A.(a)-(iii), (b)-(iv), (c)-(i), (d)-(ii)
B.(a)-(iv), (b)-(iii), (c)-(ii), (d)-(i)✓
C.(a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)
D.(a)-(ii), (b)-(iv), (c)-(iii), (d)-(i)

The worked solution is part of a paid pack.

Open this question on its own page →