Cell Cycle And Cell Division — DPP 3

18 NEET questions from Cell Cycle And Cell Division, with answers and explanations. Attempt it as a timed test to get scoring, accuracy breakdown and mistake tracking.

Attempt this test free 20 questions · 30 minutes · +80 marks
1
In a diploid cell before S-phase if quantity of DNA is 20 pico gram (pg) then after meiosis I what will be the quantity of DNA in each daughter cell ?
  1. A 10 pg
  2. B 20 pg
  3. C 5 pg
  4. D 40 pg
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Correct answer: B

2
Refer to the following statements describing Prophase I of meiosis and answer the question.
(i) Thin thread like chromosomes
(ii) Appearance of recombination nodule
(iii) Formation of bivalents/tetrads
(iv) Terminalisation of chiasmata
(v) Appearance of chiasmata
Arrange the given statements in the correct sequence their occurrence during prophase I
  1. A (i) → (iii) → (ii) → (iv) → (v)
  2. B (i) → (ii) → (iii) → (iv) → (v)
  3. C (i) → (iv) → (v) → (ii) → (iii)
  4. D (i) → (iii) → (ii) → (v) → (iv)
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Correct answer: D

3
"Bouquet-stage" occur in which sub stages of prophase-I ?
  1. A Leptotene
  2. B Zygotene
  3. C Pachytene
  4. D Diplotene
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Correct answer: A

4
Select the odd one -
  1. A Zygotene - Synaptonemal complex appearance
  2. B Pachytene - Appearance of recombination nodule
  3. C Diplotene - Terminalisation of chiasmata
  4. D Diakinesis - Assembly of meiotic spindle
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Correct answer: C

5
Which of the two events maintain the constant number of chromosomes across generations?
  1. A Mitosis and Meiosis
  2. B Meiosis and fertilisation
  3. C Fertilisation and mitosis
  4. D Only meiosis
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Correct answer: B

6
The drawing below shows a cell whose diploid chromosome number is four. This cell is in:-
Cell Cycle And Cell Division – NEET-2126
  1. A Metaphase of mitosis
  2. B Anaphase of mitosis
  3. C First anaphase of meiosis
  4. D Second anaphase of meiosis
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Correct answer: C

7
Condensation of chromosomes is completed in:-
  1. A Prophase
  2. B Interphase
  3. C Metaphase
  4. D Anaphase
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Correct answer: C

8
After meiosis-I :-
  1. A the two chromatids of a chromosome are genetically similar
  2. B the two chromatids of a chromosome are genetically different
  3. C There occurs only one chromatid in each chromosome
  4. D Four similar daughter cells are formed
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Correct answer: B

9
Condensation of chromosomes and appearance of astral rays occur during :-
  1. A Prophase
  2. B Metaphase
  3. C Anaphase
  4. D Telophase
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Correct answer: A

10
If the number of bivalents are 8 in metaphase-I, what shall be the number of chromosomes in daughter cells after meiosis-I and meiosis-II respectively:-
  1. A 8 and 4
  2. B 4 and 4
  3. C 8 and 8
  4. D 16 and 8
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Correct answer: C

11
After meiosis-I if daughter cell has 6 double chromatid chromosomes then what will be the number of chromosomes in each daugther cell after meiosis-II ?
  1. A 6 (each with two chromatids)
  2. B 12 (each with single chromatid)
  3. C 6 (each with single chromatid)
  4. D 12 (each with two chromatids)
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Correct answer: C

12
The term meiosis was given by :-
  1. A Farmer and Moore
  2. B Watson and Crick
  3. C Alexander Fleming
  4. D Flaming and Skoog
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Correct answer: A

13
Which one of the following statements is incorrect for interkinesis ?
  1. A It is the stage between the two subphases (I & II) of a meiotic division
  2. B There is no replication of DNA
  3. C DNA replicate but chromosome number remains same
  4. D It is generally short lived.
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Correct answer: C

14
Given below are two statements :-
Statement-I : Chromosomes decondense in telophase I to form chromatin to extended state of interphase nucleus.
Statement-II : Chromosomes recondense in prophase II.
  1. A Both Statement-I and Statement-II are correct.
  2. B Statement-I is incorrect but Statement-II is correct.
  3. C Statement-I is correct but Statement-II is incorrect.
  4. D Both Statement-I and Statement-II are incorrect.
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Correct answer: B

15
Which of the following is wrong about S-phase in animal cell?
  1. A DNA duplication occur in S-phase
  2. B Cell synthesized Histone protein in S-phase
  3. C Centriole duplication occur in S-phase
  4. D Synthesis of tubulin protein in S-phase
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Correct answer: D

16
Which of the following not occurs in anaphase-I?
  1. A Segregation of homologous chromosomes
  2. B Shortening in spindle fibres
  3. C Poleward movement of chromosomes
  4. D Division of centromere
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Correct answer: D

17
Assertion: DNA synthesis occurs in $\mathrm { G } _ { 1 }$ and $\mathrm { G } _ { 2 }$ periods of cell cycle.
Reason: During $\mathrm { G } _ { 1 }$ and $\mathrm { G } _ { 2 }$ phases, the DNA content becomes double.
  1. A Both the assertion and the reason are true and the reason is a correct explanation of the assertion.
  2. B Both the assertion and reason are true but the reason is not a correct explanation of the assertion.
  3. C Assertion is true but the reason is false.
  4. D Both the assertion and reason are false.
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Correct answer: D

18
Mark incorrect statements :-
(A) Meiosis involves only a single cycle of DNA replication
(B) Four haploid cells are formed at the end of meiosis–I
(C) Meiosis occurs in diploid cells
(D) In yeast, cell cycle takes about 90 minutes.
  1. A A and B
  2. B A and C
  3. C Only B
  4. D All are correct
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Correct answer: C

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