Cell Division(Meiosis) ( NEET/AIIMS Online Ptactice Exam)

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In which of the following stages of the cell cycle chromosome number becomes half?
1. Metaphase-I
2. Prophase-I
3. Anaphase-I
4. Metaphase-ll
Bouquet stage is observed in :-
1. diplotene
2. leptotene
3. pachytene
4. zygotene
56 cells are produced in meiosis where first division is
1. None of these
2. unequal
3. mitosis
4. reductional
Dictyotene a is prolonged
1. leptotene
2. zygotene
3. diplotene
4. pachytene
From the following, identify the two incorrect statements with reference to meiosis.
I. Bead like structures are absent on chromosoms.
II. Displacement of chaismata occurs in diakinesis.
III. Separation of two basic sets of chromosomes.
IV. No division of centromere. The correct option is
1. II, III
2. III, IV
3. I, IV
4. II, IV
Which one of the following stages corresponds to Mendel's law of independent assortment?
1. Metaphase-l
2. Anaphase-I
3. Anaphase-ll
4. Telophase-I
Which of the following statements are correct for meiosis?
I. Meiosis is a double division. It gives rise to four cells.
II. The cells undergoing meiosis may be haploid or diploid.
III. No bouquet stage is recorded.
IV. Pairing or synapsis of homologous chromosome takes place during zygotene of prophase-I and continues upto metaphase-I.
Option containing correct statement is
1. I Only
2. All of these
3. I and IV
4. II and III
Select the event of cell cycle which shows theimportance of synapsis and the formation of chiasmata
1. All of the above
2. The DNA on homologous chromosomes mix
3. Reciprocal exchange of chromosomal sections occurs
4. An increase in the variation of progeny occurs
He La cells can be used study cell division; they are:-
1. rat uterine cancer cells
2. human skin cancer cells
3. human heart cells
4. human uterine cancer cells
Which of the following statement(s) is/are not correct about meiosis?
I. Meiosis involves pairing of homologous chromosomes and recombination between them.
II. Two diploid cells are formed at the end of meiosis-II.
III. Meiosis involves two sequential cycles of nuclear and cell division called meiosis-I and meiosis-II, but only a single cycle of DNA replication.
IV. Meiosis-I is initiated after the parental chromosome replication which produce identical sister chromatids at the S-phase.
The correct option is
1. II and III
2. II Only
3. I and III
4. I, II, III and IV
Diakinesis is marked by
1. All of the above
2. terminalisation of chiasmata
3. degeneration of nucleolus
4. degeneration of nucleolus
Significance of meiosis lies in
1. All of these
2. maintaining consistency of chromosome number during sexoal reproduction
3. reduction of chromosome number to one-half
4. production of genetic variability
If the cell has 14 chromosomes at interphase. Than how many chromosomes will the cell have at G -phase of cell cycle?
1. 21
2. 28
3. 14
4. 7
Give the name of the phases of meiosis, in which
I. the chromosome number is reduced to haploid state.
II. the amount of DNA is reduced to haploid state.
The correct option is
1. Anaphase-ll, anaphase-l
2. Anaphase-ll, metaphase-l
3. Anaphase-I, metaphase-ll
4. Anaphase-I, anaphase-ll
In meiosis, the chromosome number
1. reduces by half
2. reduces by one-fourth
3. increase by twice
4. increase by four times
Assertion(A):- Meiotic division occurs in reproductive cells.
Reason (R):- Synapsis occurs during zygotene : meiosis.
1. A is true, but R is false
2. A is false, but R is true
3. Both A and R are true, but R is not the correct explanation of A
4. Both A and R are true, and R is a correct explanation of A
Which of the following stage is responsible for the appearance of Lampbrush chromosomes?
1. Mitotic anaphase
2. Meiotic prophase
3. Mitotic prophase
4. Mitotic metaphase
Meiosis occurs in which of the following cells?
1. Liver cells
2. All of these
3. Sperm cells
4. Unicellular organisms
The stage between two meiotic division is called
1. interkinesis
2. cytokinesis
3. karyokinesis
4. interphase
Meiosis in a plant cell occurs when there is a change from
1. gametophyte to gametophyte
2. sporophyte to gametophyte
3. gametophyte to sporophyte
4. sporophyte to sporophyte
At which stage of cell cycle colchicine arrests the spindle?
1. Interphase
2. Telophase
3. Prophase
4. Anaphase
Assertion (A) Meiosis takes place in pollen mother cells.
Reason (R) Each pollen mother cell produces four haploid pollen grains.
1. Both A and R are true, but R is not the correct explanation of the A
2. A is false, but R is true
3. Both A and R are true and the R is the correct explanation
4. A is true, but R is false
Complete process of meiosis involves :-
1. one cytoplasmic division with two duplication of chromosome
2. one cytoplasmic division with only one chromosome duplication
3. two cytoplasmic divisions with two duplication of chromosome
4. two cytoplasmic divisions with one duplication of chromosome
Meiotic division which occurs just at the time of gametogenesis is :-
1. sporic
2. intermediate
3. initial
4. terminal
Match the following columns.
Column -I Column -II

A Terminalisation 1 Metaphase-I

B Histone synthesis 2
Anaphase-I

C
Disjunction
3 Diakinesis

D Interkinesis 4
Meiosis-ll

E Double equatorial plate G1 -phase
1. A - 5, B - 2, C - 1, D - 3, E - 4
2. A - 3, B - 5, C - 2, D - 4, E - 1
3. A - 3, B - 5, C - 4, D - 2, E - 1
4. A - 2, B - 5, C - 4, D - 1, E - 3
Which of the following shows diplotene, stage of cell cycle?
1. All of the above
2. degeneration of nucleolus
3. Chiasmata shift towards chromosome ends
4. Separation of synapsed homologous chromosomes except at the site of cross overs
Meiosis can be observed in
1. spore mother cells
2. megaspores
3. tapetal cells
4. micropores
Which of the following stage of meiosis is responsible for deciding genetic constitution of gametes?
1. Metaphase-ll
2. Metaphase-l
3. Anaphase-I
4. Anaphase-ll
Fill in the blanks (A-D).
I. The failure of chromosomes to separate during meiosis or mitosis is called ...A... .
II. Synapsis occurs in ...B... phase of meiosis.
III.Chiasmata are most appropriately observed meiosis during ...C... .
IV.Separation of linked genes is called ...D... .
1. A-disjunction, B-pachytene, C-zygotene, D-synapsis
2. A-non-disjunction, B-zygotene, C-diplotene, D-crossing over
3. A-disjunction, B-diplotene C-zygotene, D-synapsis
4. A-non-disjunction, B-diplotene, C-zygotene, D-crossing over
Assertion (A) Meiosis is known as reductional division.
Reason (R) During meiosis, the chromosome number get reduced by half of its total number.
1. Both A and R are true
2. Both A and R are true, but R is not the correct explanation
3. A is true, but R is false
4. Both A and R are true and R is the correct explanation of A
When paternal and maternal chromosomes change their material with each other in cell division, this event is called
1. dyad forming
2. bivalent forming
3. crossing over
4. synapsis
Longest phase of meiosis is
1. Metaphase-ll
2. Anaphase-I
3. Prophase-I
4. Prophase-ll
Meiosis occurs in organism during
1. vegetative reproduction
2. None of these
3. sexual reproduction
4. Both (vegetative reproduction) and (sexual reproduction)
Cell would normally proceed to mitosis without interruption
1. once it had entered the G2-phase
2. at anytime during cell division
3. None of these
4. once it had started the S period
What is the nature of cells formed at the end of meiosis-II ?
1. Tetrad
2. Haploid
3. Diploid
4. None of these
The term 'meiosis' was given by
1. Rusk
2. Former and Moore
3. Flemming
4. Johannsen
Meiosis involves two sequential cycles of ...A... called meiosis and meiosis-II but only a single cycle of ...B... .identify A and B to complete the given statement.
1. A-DNA replication, B-cell division
2. A-nuclear and cell division, B-DNA replication
3. A-nuclear and cell division, B-DNA replication
4. A-nuclear division, B-DNA replication
Which of the following force develop between the homologous chromosome during zygotene?
1. Both cohesion force & synapatic force
2. cohesion force
3. adhesion
4. synapatic force
At anaphase of meiosis some chromosomes lag behind. They are called laggards.

The cause is:-
1. acentric chromosomes
2. dicentric chromosome
3. duplication of genes
4. inversion of chromosomes
Which of the following species haploid cell has maximum chromosome counts?
1. Ophioglossum
2. Dog
3. Allium
4. Cat
Which of the following can be used to double the chromosome number?
1. Indole acetic acid
2. Colchicine
3. Zeatin
4. GA
What feature in prokaryotes substitute for the spindle action in eukaryotes?
1. looped DNA
2. elongation of plasma membrance
3. fission instead of cytokinesis
4. centroiles with eukaryotes
Recombinations of parental characters are due to:-
1. diakinesis
2. chaisma
3. diplotene
4. synapsis
The phragmoplast is organised at the
1. end of anaphase
2. end of telophase
3. beginning of telophase
4. beginning of anaphase
Which of the following event distinguishes prophase-I of meiosis from prophase of mitosis?
1. Homologous chromosomes pair up
2. Spindle forms
3. Chromosomes become visible
4. Nuclear membrane breaks down
At the end of meiosis-II, number of haploid cells formed are
1. eight
2. two
3. four
4. None of these
Match the following columns.
Column - I Column - II

A Phragmoplast 1 Meiosis-ll

B Equational division 2
Meiosis-I

C
Reductional division
3 Zygotene-I

D Synaptonemal complex 4
Persistent spindle
1. A - 1, B - 3, C - 2, D - 4
2. A - 3, B - 1, C - 4, D - 2
3. A - 3, B - 2, C - 4, D - 1
4. A - 4, B - 1, C - 2, D - 3
The points at which crossing over has taken place between homologous chromosomes are called :-
1. protein axes
2. synaptonemal complexes
3. chiasmata
4. centromeres
Identify- the following figures (A-D) and choose the correct option.
1. A - Prophase - II, B - Anaphase - I , C - Interphase , D - Metaphase - II
2. A - Metaphase - II, B - Anaphase - I , C - Prophase - I , D - Anaphase - II
3. A - Metaphase - I, B - Anaphase - I , C - Prophase - I , D - Anaphase - II
4. A - Prophase - I, B - Anaphase - I , C - Interphase , D - Metaphase - I
Arrange the following events of meiosis in a correct sequence and choose the correct option.
I. Terminalisation
II. Crossing over
III. Synapsis
IV. Disjunction of genomes
1. I, IV, III and II
2. IV, III, II and I
3. III, II, I and IV
4. II, I, IV and III

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	Column -I		Column -II
A	Terminalisation	1	Metaphase-I
B	Histone synthesis	2	Anaphase-I
C	Disjunction	3	Diakinesis
D	Interkinesis	4	Meiosis-ll
E	Double equatorial plate		G1 -phase

	Column - I		Column - II
A	Phragmoplast	1	Meiosis-ll
B	Equational division	2	Meiosis-I
C	Reductional division	3	Zygotene-I
D	Synaptonemal complex	4	Persistent spindle

Cell Division(Meiosis) ( NEET/AIIMS Online Ptactice Exam)

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