Q.1.
Nuclear envelope disappears during ... ... [ MPPMT 1995 ]
-
33%
a) Anaphase
-
13%
b) Metaphase
-
20%
c) Early prophase
-
33%
d) Late prophase
Q.2.
Homologous chromosomes separate during ... ... [ Odisha 2009 ]
-
0%
a) Metaphase I
-
54%
b) Anaphase I
-
15%
c) Metaphase II
-
31%
d) Anaphase II
Q.3.
Cell division is initiated by ... ... [ AFMC 2000 ]
-
73%
a) Cytokinin
-
18%
b) Auxin
-
0%
c) Gibberellin
-
9%
d) ABA
Q.4.
In meiosis, the daughter cells differ from parent cell as well as amongst themselves due to ... ..... [ AFMC 2005 ]
-
40%
a) Segregation, independent assortment and crossing over
-
20%
b) Segregation and crossing over
-
30%
c) Independent assortment and crossing over
-
10%
d) Segregation and independent assortment
Q.5.
The stage of cell cycle when cell decides to undergone differentiation is ... .... [ JIPMER 1998 ]
-
20%
a) G0
-
50%
b) G1
-
20%
c) G3
-
10%
d) G4
Q.6.
Kinetochore is ... ... [ Bih. PMT 2001 ]
-
25%
a) Granule within centromere
-
38%
b) Surface of centromere
-
25%
c) Constriction near chromosome end
-
12%
d) End of chromosome
Q.7.
When are spindle fiber proteins synthesized ... ... [ Odisha 2004 ]
-
40%
a) G1 -phase
-
40%
b) G2 - phase
-
20%
c) Metaphase
-
0%
d) S -phase
Q.8.
Paring of homologous chromosomes in zygotene is ... ... [ BHU 2003 ]
-
0%
a) Synapse
-
78%
b) Synapsis
-
22%
c) Crossing over
-
0%
d) Terminalisation
Q.9.
Histone protein synthesis occurs during ... ... [ CBSE 2005 ]
-
0%
a) G1-phase
-
44%
b) G2 -phase
-
44%
c) S-phase
-
11%
d) Prophase
Q.10.
Recombination between homologous chromosomes is completed by the end of ... ... [ CET Chd. 2009 ]
-
44%
a) Pachytene
-
22%
b) Leptotene
-
33%
c) Diplotene
-
0%
d) Zygotene
Q.11.
Significance of meiosis lies in ... ... [ MPPMT 1995 ]
-
25%
a) Production of genetic variability
-
0%
b) Maintaining constancy of chromosome number during sexual reproduction
-
12%
c) Reduction of chromosome number to one half
-
62%
d) All the above
Q.12.
Karyokinesis differs from cytokinesis as it involves division of ... ... [ AMU 1998 ]
-
25%
a) Cytoplasm
-
62%
b) Nucleus
-
12%
c) Both nucleus and cytoplasm
-
0%
d) Cell
Q.13.
match the columns
| I | II |
| a) Initiation of spindle fibres | i) Anaphase I |
| b) Synthesis of RNA and protein | ii) Zygotene |
| c) Action of endonuclease | iii) G1 -phase |
| d) Movement of chromatids towards opposite poles | iv) Pachytene |
| - - | v) Anaphase II |
-
50%
a) a - ii, b - iii, c - iv, d - v
-
38%
b) a - iii, b - ii, c - i , d - v
-
12%
c) a - i, b - iii, c - v, d - iv
-
0%
d) a - i, b - iv, c - v, d - iii
Q.14.
Second division of meiosis is ... ... [ KCET 1998 ]
-
25%
a) Reductional division
-
12%
b) Multiplied division
-
62%
c) Equational division
-
0%
d) None of the above
Q.15.
During which phase(s) of cell cycle, amount of DNA in a cell remains at 4C level if the initial amount is denoted as 2C? ….[AIPMT 2014]
-
57%
a) OnlyG2
-
29%
b) G2 and M
-
0%
c) G0 and G1
-
14%
d) G1 and S
Q.16.
In 'S' phase of the cell cycle: ….[AIPMT 2014]
-
0%
a) chromosome number is increased.
-
14%
b) amount of DNA is reduced to half in each cell.
-
86%
c) amount of DNA doubles in each cell.
-
0%
d) amount of DNA remains same in each cell
Q.17.
The enzyme recombinase is required at which stage of meiosis: …[AIPMT 2014]
-
14%
a) Diplotene
-
29%
b) Diakinesis
-
57%
c) Pachytene
-
0%
d) Zygotene
Q.18.
Select the correct option: …[AIPMT 2015]
| I | II |
| (a) Synapsis aligns homologous chromosomes | (i)Anaphase-II |
| (b) Synthesis of RNA and protein | (ii)Zygotene |
| (c) Action of enzyme recombinase | (iii) G2-phase |
| (d)Centromeres do not separate but chromatids move towards opposite poles | (iv)Anaphase-I |
| - - - - | (v)Pachytene |
-
43%
a) a → (ii); b → (iii); c → (iv) ; d → (v)
-
29%
b) a → (ii) ; b → (i) ; c → (iii) ; d → (iv)
-
29%
c) a →(ii) ; b → (iii); c → (v) ; d → (iv)
-
0%
d) a →(i) ; b → (ii) ; c → (v) ; d → (iv)
Q.19.
A somatic cell that has just completed the S phase of its cell cycle, as compared to gamete of the same species, has: …[AIPMT 2015]
-
0%
a) four times the number of chromosomes and twice the amount of DNA
-
43%
b) twice the number of chromosomes and twice the amount of DNA
-
14%
c) same number of chromosomes but twice the amount of DNA
-
43%
d) twice the number of chromosomes and four times the amount of DNA
Q.20.
Spindle fibers attach on to :- …[AIPMT-2016]
-
0%
a) Telomere of the chromosome
-
71%
b) Kinetochore of the chromosome
-
0%
c) Centromere of the chromosome
-
29%
d) Kinetosome of the chromosome
Q.21.
In meiosis crossing over is initiated at : …[AIPMT-2016]
-
43%
a) Pachytene
-
29%
b) Leptotene
-
14%
c) Zygotene
-
14%
d) Diplotene
Q.22.
Which of the following is not a characteristic feature during mitosis in somatic cells ? …[AIPMT-2016]
-
29%
a) Spindle fibers
-
0%
b) Disappearance of nucleolus
-
14%
c) Chromosome movement
-
57%
d) Synapsis
Q.23.
The complex formed by a pair of synapsed homologous chromosomes is called .. [NEET 2013]
-
0%
a) Equatorial plate
-
14%
b) Kinetochore
-
71%
c) Bivalent
-
14%
d) Axoneme
Q.24.
Meiosis takes place in …[NEET 2013]
-
83%
a) Meiocyte
-
17%
b) Conidia
-
0%
c) Gemmule
-
0%
d) Megaspore
Q.25.
A stage in cell division is shown in the figure. Select the answer which gives correct identification of the stage with its characteristics. ….[NEET 2013]
-
43%
a) Telophase → Nuclear envelop reforms, golgi complex reforms
-
14%
b) Late Anaphase → Chromosomes move away from equatorial plate, golgi complex not present.
-
29%
c) Cytokinesis → Cell plate formed,mitochondria distributed between two daughter cells.
-
14%
d) Telophase → Endoplasmic reticulum and nucleolus not reformed yet.
Q.26.
During cell growth, DNA synthesis takes place in:- …[NEET 2016]
-
0%
a) G2 phase
-
0%
b) M phase
-
67%
c) S phase
-
33%
d) G1 phase
Q.27.
When cell has stalled DNA replication fork, which checkpoint should be predominantly activated? …[NEET 2016]
-
17%
a) M
-
33%
b) Both G2/M and M
-
50%
c) G1/S
-
0%
d) G2/M
Q.28.
Match the stages of meiosis in Column–I to their characteristic features in Column–II and select the correct option using the codes given below : …[NEET 2016]
| Column-I | Column-II |
| a) Pachytene | i) Pairing of homologouschromosomes |
| b) Metaphase-I | ii) Terminalization of chiasmata |
| c) Diakinesis | iii) Crossing over takes place |
| d) Zygotene | iv) Chromosomes align at equatorial plate |
-
0%
a) a → ii; b→ iv; c→ iii; d→ i
-
33%
b) a → iv; b→ iii; c→ ii; d→ i
-
50%
c) a →iii; b→ iv; c→ ii; d→ i
-
17%
d) a →i; b→ iv; c→ ii; d→ iii
Q.29.
Which of the following options gives the correct sequence of events during mitosis? ….[NEET- 2017]
-
17%
a) Condensation → nuclear membrane disassembly → crossing over → segregation → telophase
-
33%
b) Condensation → nuclear membrane disassembly → arrangement at equator →centromere division → segregation → telophase
-
33%
c) Condensation → crossing over → nuclear membrane disassembly → segregation → telophase
-
17%
d) Condensation → arrangement at equator → centromere division → segregation →telophase
Q.30.
Anaphase promoting complex (APC) is a protein degradation machinery necessary for proper mitosis of animal cells. If APC is defective in a human cell, which of the following is expected to occur? ….[NEET- 2017]
-
14%
a) Chromosomes will not condense
-
29%
b) Chromosomes will be fragmented
-
29%
c) Chromosomes will not segregate
-
29%
d) Recombination of chromosome arms will occur