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

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-nuclear and cell division, B-DNA replication
2. A-nuclear and cell division, B-DNA replication
3. A-DNA replication, B-cell division
4. A-nuclear division, B-DNA replication
At the end of meiosis-II, number of haploid cells formed are
1. two
2. four
3. eight
4. None of these
What is the nature of cells formed at the end of meiosis-II ?
1. Haploid
2. Diploid
3. Tetrad
4. None of these
In meiosis, the chromosome number
1. reduces by half
2. increase by twice
3. increase by four times
4. reduces by one-fourth
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 and R is the correct explanation of A
2. Both A and R are true, but R is not the correct explanation
3. Both A and R are true
4. A is true, but R is false
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. I and III
2. II Only
3. II and III
4. I, II, III and IV
Meiosis occurs in organism during
1. vegetative reproduction
2. sexual reproduction
3. Both (vegetative reproduction) and (sexual reproduction)
4. None of these
Longest phase of meiosis is
1. Prophase-I
2. Anaphase-I
3. Prophase-ll
4. Metaphase-ll
Select the event of cell cycle which shows theimportance of synapsis and the formation of chiasmata
1. An increase in the variation of progeny occurs
2. The DNA on homologous chromosomes mix
3. Reciprocal exchange of chromosomal sections occurs
4. All of the above
Which of the following shows diplotene, stage of cell cycle?
1. Separation of synapsed homologous chromosomes except at the site of cross overs
2. degeneration of nucleolus
3. Chiasmata shift towards chromosome ends
4. All of the above
Diakinesis is marked by
1. terminalisation of chiasmata
2. degeneration of nucleolus
3. degeneration of nucleolus
4. All of the above
Meiosis occurs in which of the following cells?
1. Sperm cells
2. Unicellular organisms
3. Liver cells
4. All of these
When paternal and maternal chromosomes change their material with each other in cell division, this event is called
1. bivalent forming
2. crossing over
3. synapsis
4. dyad forming
Assertion(A):- Meiotic division occurs in reproductive cells.
Reason (R):- Synapsis occurs during zygotene : meiosis.
1. Both A and R are true, but R is not the correct explanation of A
2. Both A and R are true, and R is a correct explanation of A
3. A is true, but R is false
4. A is false, but R is true
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. I and IV
3. II and III
4. All of these
In which of the following stages of the cell cycle chromosome number becomes half?
1. Metaphase-I
2. Anaphase-I
3. Prophase-I
4. Metaphase-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-diplotene C-zygotene, D-synapsis
2. A-disjunction, B-pachytene, C-zygotene, D-synapsis
3. A-non-disjunction, B-diplotene, C-zygotene, D-crossing over
4. A-non-disjunction, B-zygotene, C-diplotene, D-crossing over
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 - 4, B - 1, C - 2, D - 3
2. A - 3, B - 1, C - 4, D - 2
3. A - 3, B - 2, C - 4, D - 1
4. A - 1, B - 3, C - 2, D - 4
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 - 4, D - 2, E - 1
3. A - 2, B - 5, C - 4, D - 1, E - 3
4. A - 3, B - 5, C - 2, D - 4, E - 1
Which of the following force develop between the homologous chromosome during zygotene?
1. cohesion force
2. synapatic force
3. Both cohesion force & synapatic force
4. adhesion
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-I, metaphase-ll
3. Anaphase-I, anaphase-ll
4. Anaphase-ll, metaphase-l
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. IV, III, II and I
2. III, II, I and IV
3. II, I, IV and III
4. I, IV, III and II
Significance of meiosis lies in
1. reduction of chromosome number to one-half
2. maintaining consistency of chromosome number during sexoal reproduction
3. production of genetic variability
4. All of these
The term 'meiosis' was given by
1. Rusk
2. Flemming
3. Johannsen
4. Former and Moore
Which of the following stage is responsible for the appearance of Lampbrush chromosomes?
1. Meiotic prophase
2. Mitotic prophase
3. Mitotic anaphase
4. Mitotic metaphase
Which of the following stage of meiosis is responsible for deciding genetic constitution of gametes?
1. Metaphase-ll
2. Anaphase-ll
3. Metaphase-l
4. Anaphase-I
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. II, IV
3. III, IV
4. I, IV
Which of the following species haploid cell has maximum chromosome counts?
1. Ophioglossum
2. Cat
3. Allium
4. Dog
The stage between two meiotic division is called
1. interphase
2. cytokinesis
3. interkinesis
4. karyokinesis
Which one of the following stages corresponds to Mendel's law of independent assortment?
1. Anaphase-ll
2. Anaphase-I
3. Metaphase-l
4. Telophase-I
56 cells are produced in meiosis where first division is
1. unequal
2. reductional
3. mitosis
4. None of these
Which of the following event distinguishes prophase-I of meiosis from prophase of mitosis?
1. Nuclear membrane breaks down
2. Chromosomes become visible
3. Homologous chromosomes pair up
4. Spindle forms
Meiosis can be observed in
1. tapetal cells
2. megaspores
3. micropores
4. spore mother cells
Meiosis in a plant cell occurs when there is a change from
1. sporophyte to gametophyte
2. gametophyte to sporophyte
3. gametophyte to gametophyte
4. sporophyte to sporophyte
Dictyotene a is prolonged
1. leptotene
2. pachytene
3. diplotene
4. zygotene
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 and the R is the correct explanation
2. Both A and R are true, but R is not the correct explanation of the A
3. A is true, but R is false
4. A is false, but R is true
Complete process of meiosis involves :-
1. one cytoplasmic division with only one chromosome duplication
2. two cytoplasmic divisions with one duplication of chromosome
3. one cytoplasmic division with two duplication of chromosome
4. two cytoplasmic divisions with two duplication of chromosome
Identify- the following figures (A-D) and choose the correct option.
1. A - Metaphase - II, B - Anaphase - I , C - Prophase - I , D - Anaphase - II
2. A - Prophase - I, B - Anaphase - I , C - Interphase , D - Metaphase - I
3. A - Metaphase - I, B - Anaphase - I , C - Prophase - I , D - Anaphase - II
4. A - Prophase - II, B - Anaphase - I , C - Interphase , D - Metaphase - II
If the cell has 14 chromosomes at interphase. Than how many chromosomes will the cell have at G -phase of cell cycle?
1. 28
2. 14
3. 7
4. 21
The phragmoplast is organised at the
1. beginning of anaphase
2. end of anaphase
3. beginning of telophase
4. end of telophase
At which stage of cell cycle colchicine arrests the spindle?
1. Anaphase
2. Prophase
3. Telophase
4. Interphase
Which of the following can be used to double the chromosome number?
1. Indole acetic acid
2. GA
3. Zeatin
4. Colchicine
Cell would normally proceed to mitosis without interruption
1. once it had started the S period
2. once it had entered the G2-phase
3. at anytime during cell division
4. None of these
The points at which crossing over has taken place between homologous chromosomes are called :-
1. chiasmata
2. synaptonemal complexes
3. centromeres
4. protein axes
Recombinations of parental characters are due to:-
1. synapsis
2. diplotene
3. chaisma
4. diakinesis
Meiotic division which occurs just at the time of gametogenesis is :-
1. intermediate
2. sporic
3. initial
4. terminal
Bouquet stage is observed in :-
1. leptotene
2. diplotene
3. zygotene
4. pachytene
What feature in prokaryotes substitute for the spindle action in eukaryotes?
1. centroiles with eukaryotes
2. elongation of plasma membrance
3. looped DNA
4. fission instead of cytokinesis
At anaphase of meiosis some chromosomes lag behind. They are called laggards.

The cause is:-
1. inversion of chromosomes
2. acentric chromosomes
3. dicentric chromosome
4. duplication of genes
He La cells can be used study cell division; they are:-
1. human skin cancer cells
2. human uterine cancer cells
3. human heart cells
4. rat uterine cancer cells

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	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

	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

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

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