NEET Biology Cell Cycle and Cell Division MCQs Set 11

Multiple Choice Questions (MCQs) for NEET Biology: Cell Cycle and Cell Division

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Practice Cell Cycle and Cell Division MCQs for NEET Biology

Access the complete set of multiple-choice questions for Cell Cycle and Cell Division below. This focused format allows students to isolate specific topics for thorough review and uninterrupted practice alongside official NEET textbooks.

Multiple Choice Questions

Question 1: Centromere is required for
(a) Transcription
(b) Crossing over
(c) Cytoplasmic cleavage
(d) Movement of chromosomes towards poles
Show Answer & Explanation

Answer: (d) Movement of chromosomes towards poles

Explanation:
1. Movement of chromosomes towards poles, it provides site for attachment of spindle fiberes.

Question 2: Comparing small and large cells, which statement is correct?
(a) Small cells have a small surface area per volume ratio
(b) Exchange rate of nutrients is fast with large cells
(c) Small cells have a large surface area per volume ratio
(d) Exchange rate of nutrients is slow with small cells
Show Answer & Explanation

Answer: (c) Small cells have a large surface area per volume ratio

Explanation:
1. Small cells - Surface area to volume ratio high exchange rate of nutrients fast.

Question 3: In a somatic cell cycle, DNA synthesis takes place in
(a) G1 phase
(b) Prophase of mitosis
(c) S-phase
(d) G2 phase
Show Answer & Explanation

Answer: (c) S-phase

Explanation:
1. In a cell cycle DNA synthesis occurs only in S-phase.

Question 4: 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 followed by mitotic phase
Show Answer & Explanation

Answer: (b) DNA replication takes place in S-phase

Explanation:
1. Interphase occupies 95% time of cell cycle.

Question 5: How many chromosomes will the cell have at G1, after S and after M phase respectively, if it has 14 chromosomes at interphase?
(a) 14, 14, 7
(b) 14, 14, 14
(c) 7, 7, 7
(d) 7, 14, 14
Show Answer & Explanation

Answer: (b) 14, 14, 14

Explanation:
1. This is so because number of chromosome remain same in mitosis ∴ it equational division.

Question 6: During cell division in apical meristem, the nuclear membrane appears in
(a) Telophase
(b) Cytokinesis
(c) Metaphase
(d) Anaphase
Show Answer & Explanation

Answer: (a) Telophase

Explanation:
1. Nuclear envelope reappears in telophase.

Question 7: How many mitotic divisions are needed for a single cell to make 128 cells?
(a) 28
(b) 32
(c) 127
(d) 14
Show Answer & Explanation

Answer: (c) 127

Explanation:
1. Number of cells (n) = 128 Number of division = (n – 1) = 128 – 1 = 127.

Question 8: Which of the following structure will not be common to mitotic cell of a higher plant?
(a) Centriole
(b) Spindle fibre
(c) Cell plate
(d) Centromere
Show Answer & Explanation

Answer: (a) Centriole

Explanation:
1. Centriole is not present in plant cell.

Question 9: A bacterium divides every 35 minutes. If a culture containing 105 cells per ml is grown for 175 minutes, what will be the cell concentration per ml after 175 minutes?
(a) 35 × 105 cells
(b) 32 × 105 cells
(c) 175 × 105 cells
(d) 85 × 105 cells
Show Answer & Explanation

Answer: (b) 32 × 105 cells

Explanation:
1. 175 In 175 minutes → = = 5 time division will 35 5 1 2 4 8 16 32 × 10 (1) (2) (3) (4) (5).

Question 10: If a diploid cell is treated with colchicine then it becomes
(a) Triploid
(b) Tetraploid
(c) Diploid
(d) Monoploid
Show Answer & Explanation

Answer: (b) Tetraploid

Explanation:
1. This is so because colchicine affects microtubules synthesis thus, arrest cell division at anaphase stage, 2n → 4n.

Question 11: 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
Show Answer & Explanation

Answer: (a) Metaphase

Explanation:
1. Metaphase stage can be most conveniently looked because at this stage chromosomes are completely condensed.

Question 12: Which one of the following precedes re-formation of the nuclear envelope during M phase of the cell cycle?
(a) Decondensation from chromosomes, 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
Show Answer & Explanation

Answer: (c) Formation of the contractile ring, and formation of the phragmoplast

Explanation:
1. Microtubules form contractile ring which helps in invagination of plasma membrane at late anaphase.

Question 13: In an angiosperm, how many microspore mother cells are required to produce 100 pollen grains?
(a) 75
(b) 100
(c) 25
(d) 50
Show Answer & Explanation

Answer: (c) 25

Explanation:
1. 1 micro spore mother cell → 4 pollen grain 1 ∴ For 1 pollen grain = microsphere mother cell 4 1 ∴ For 100 pollen grain = × 100 = 25 4.

Question 14: If there are 4 pollen mother cells in anthers, what will be the number of pollen grains?
(a) 16
(b) 12
(c) 8
(d) 4
Show Answer & Explanation

Answer: (a) 16

Explanation:
1. 1→4 ∴ 4 → 4 × 4 = 16.

Question 15: A gymnospermic leaf carries 16 chromosomes. The number of chromosomes in its endosperm will be
(a) 12
(b) 8
(c) 16
(d) 24
Show Answer & Explanation

Answer: (b) 8

Explanation:
1. Leaf cell (2n) = 16 (diploid) Endosperm of gymnosperm is haploid (n) 16 ∵ = =8 2 ∴→ 8.

Question 16: Crossing over that results in genetic recombination in higher organisms occurs between
(a) Sister chromatids of a bivalent
(b) Non-sister chromatids of a bivalent
(c) Two daughter nuclei
(d) Two different bivalents
Show Answer & Explanation

Answer: (b) Non-sister chromatids of a bivalent

Explanation:
1. Homologous chromosomes Non-Sister Sister chromatids chromatids.

Question 17: Assertion (A): Endomitosis does not cause karyokinesis or cytokinesis.
Reason (R): In endomitosis, mitosis occurs within nucleus.
(a) Both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.
(b) Both Assertion and Reason are true but the Reason is not a correct explanation of the Assertion.
(c) Assertion is true but the Reason is false.
(d) Both Assertion and Reason are false.
Show Answer & Explanation

Answer: (a) Both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.

Explanation:
1. Endomitosis involves multiplication of chromosomes without karyokinesis and cytokinesis.

Question 18: Assertion (A): Synaptonemal complex develops between two synapsed homologous chromosomes.
Reason (R): Mitosis cannot be completed without the synaptonemal complex.
(a) Both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.
(b) Both Assertion and Reason are true but the Reason is not a correct explanation of the Assertion.
(c) Assertion is true but the Reason is false.
(d) Both Assertion and Reason are false.
Show Answer & Explanation

Answer: (c) Assertion is true but the Reason is false.

Explanation:
1. Meiosis can not be completed without the synaptonemal complex.

Question 19: Assertion (A): During anaphase-II, chromatids of a chromosome separate.
Reason (R): Centromere of a mitotic chromosome divides during anaphase.
(a) Both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.
(b) Both Assertion and Reason are true but the Reason is not a correct explanation of the Assertion.
(c) Assertion is true but the Reason is false.
(d) Both Assertion and Reason are false.
Show Answer & Explanation

Answer: (b) Both Assertion and Reason are true but the Reason is not a correct explanation of the Assertion.

Explanation:
1. Meiosis II and mitosis both are equational division and involve splitting of centromere at anaphase-II and anaphase respectively.

Question 20: Assertion (A): Dictyotene stage occurs in female only.
Reason (R): Gametogenesis rests for a long period at diplotene stage in female.
(a) Both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.
(b) Both Assertion and Reason are true but the Reason is not a correct explanation of the Assertion.
(c) Assertion is true but the Reason is false.
(d) Both Assertion and Reason are false.
Show Answer & Explanation

Answer: (a) Both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.

Explanation:
1. Dictyotene occurs in oocyctes.

Question 21: Assertion (A): Each chromosome of bivalent attaches with two spindles in metaphase.
Reason (R): In metaphase bivalents migrate towards metaphasic plate.
(a) Both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.
(b) Both Assertion and Reason are true but the Reason is not a correct explanation of the Assertion.
(c) Assertion is true but the Reason is false.
(d) Both Assertion and Reason are false.
Show Answer & Explanation

Answer: (d) Both Assertion and Reason are false.

Explanation:
1. Each chromosomes of bivalent attaches with a single spindle in Metaphase I In metaphase I one chromosome from each homologus pair migrate towards pole.

Question 22: Assertion (A): Golgi bodies and ER disappear in early prophase.
Reason (R): Their reorganisation stage is anaphase.
(a) Both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.
(b) Both Assertion and Reason are true but the Reason is not a correct explanation of the Assertion.
(c) Assertion is true but the Reason is false.
(d) Both Assertion and Reason are false.
Show Answer & Explanation

Answer: (d) Both Assertion and Reason are false.

Explanation:
1. Golgi bodies and ER disappear in Late prophase.
2. Their reorganisation occurs in telophase.

Question 23: Assertion (A): The complete disintegration of the nuclear envelope marks the start of metaphase.
Reason (R): Chromosomes are distinct with two chromatids at this stage.
(a) Both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.
(b) Both Assertion and Reason are true but the Reason is not a correct explanation of the Assertion.
(c) Assertion is true but the Reason is false.
(d) Both Assertion and Reason are false.
Show Answer & Explanation

Answer: (b) Both Assertion and Reason are true but the Reason is not a correct explanation of the Assertion.

Explanation:
1. Complete disintegration of the nuclear envelope marks begining of metaphase chromosomes at this phase have two distinct chromatids.

Question 24: Assertion (A): Chiasmata counting stage is diplotene.
Reason (R): Dissolution of the synaptonemal complex occurs except at the sites of cross overs.
(a) Both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.
(b) Both Assertion and Reason are true but the Reason is not a correct explanation of the Assertion.
(c) Assertion is true but the Reason is false.
(d) Both Assertion and Reason are false.
Show Answer & Explanation

Answer: (a) Both Assertion and Reason are true and the Reason is a correct explanation of the Assertion.

Explanation:
1. Chiasmata represents the site of crossing over.

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Multiple Choice Questions (MCQs) for NEET Biology Cell Cycle and Cell Division

NEET Biology Cell Cycle and Cell Division Objective Test Questions

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