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Neet Biology Cell Cycle, Cell Division Mcq
Quiz 4
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Q.1
Where can we study mitosis? ... ... [ Bih PMT 1991 ]
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a) Nail base
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b) Brain
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c) Legs
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d) Kidneys
Explanation
Answer : (a)
Q.2
The phase active in most cytogenetic functions is ... ... [ AIIMS 1996 ]
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a) Pachytene
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b) M-phase
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c) Interphase
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d) Meiosis
Explanation
Answer : (c)
Q.3
Mitotic spindle is composed of ... ... [ CBSE 2002 ]
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a) Actin
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b) Actinomyosin
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c) Myoglobin
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d) none of the above
Explanation
Answer : (d)
Q.4
Separation of homologous chromosomes is called ... ...
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a) Dispersion
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b) Bivalent formation
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c) Disjunction
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d) Crossing over
Explanation
Answer : (c)
Q.5
Colchicine interferes with cell division because of ... ... [ AIIMS 2012 ]
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a) Splitting of chromosomes
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b) Non-pairing of chromosomes
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c) Double replication of chromosomes
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d) Non-formation of spindle
Explanation
Answer : (d)
Q.6
Tetrad is made of ... ... [ MPPMT 1993 ]
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a) Four homologous chromosomes with four chromatids
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b) Two homologous chromosomes, each with two chromatids
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c) Four non-homologous chromatids
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d) Four non-homologous chromosomes
Explanation
Answer : (b)
Q.7
Yeast completes cell cycle in ... ... [ AMU 2012 ]
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a) 30 minutes
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b) 60 minutes
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c) 90 minutes
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d) 120 minutes
Explanation
Answer : (c)
Q.8
Cell plate is formed during ... ... [ CPMT 2007 ]
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a) Interphase
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b) Karyokinesis
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c) Cytokinesis
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d) Interkinesis
Explanation
Answer : (c)
Q.9
Which one ensures maintenance of chromosome number generation after generation ... ... [ BHU 1999 ]
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a) Mitosis
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b) Meiosis
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c) Splicing
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d) Metamorphosis
Explanation
Answer : (b)
Q.10
Cell cycle was discovered by ... ...
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a) Farmer and Moore
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b) Prevost and Dumas
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c) Howard and Pelc
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d) remake
Explanation
Answer : (c)
Q.11
In mitosis, nuclea envelope and nucleolus disappear during ... ... [ AFMC 1996 ]
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a) Prophase
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b) Interphase
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c) Metaphase
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d) Telophase
Explanation
Answer : (a)
Q.12
What is the proper sequence in mitosis? ... ... [ MPPMT 1993 ]
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a) Metaphase, telophase, prophase and anaphase
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b) Prophase, metaphase, anaphase and telophase
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c) Anaphase, metaphase, telophase and prophase
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d) Telophase, anaphase, metaphase and prophase
Explanation
Answer : (b)
Q.13
When synapsis is complete all along the chromosomes, the cell is said to have entered a stage celled .... .... [ AIIMS 2005 ]
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a) Diakinesis
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b) Diplotene
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c) Pachytene
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d) Zygotene
Explanation
Answer : (c)
Q.14
Major event that occurs during anaphase of mitosis which brings about equal distribution of chromosomes is ... ... [ KCET 2006 ]
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a) Splitting of centromeres
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b) Condensation of chromatin
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c) Replication of genetic material
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d) Splitting of chromatids
Explanation
Answer : (a)
Q.15
Spindle fibers arise from ... ... [ JIPMER 1998 ]
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a) Centriole
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b) Centromere
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c) Nucleus
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d) Mitochondria
Explanation
Answer : (a)
Q.16
What is not true of anaphase ... ... [ Odisha 2004 ]
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a) Chromosomes move to opposite poles
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b) Spindle poles move apart
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c) Golgi bodies and E.R. are reformed
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d) Centromeres split and chromatids separate
Explanation
Answer : (c)
Q.17
Plant and animal cell divisions differ in ... ..
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a) Cell plate
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b) Prophase
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c) Telophase
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d) Metaphase
Explanation
Answer : (a)
Q.18
Meiosis is ... ... [ AFMC 1991 ]
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a) Multiplicational division
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b) Equational division
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c) Disjunctional division
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d) Reductional division
Explanation
Answer : (d)
Q.19
Exchange of paternal and maternal chromosome material during cell division is ... ... [ CBSE 1996 ]
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a) Dyad formation
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b) Bivalent formation
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c) Crossing over
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d) Synapsis
Explanation
Answer : (c)
Q.20
Azides and cyanide inhibit ... ... [ AMU 2003 ]
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a) Metaphase
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b) Prophase
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c) Anaphase
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d) Telophase
Explanation
Answer : (b)
Q.21
Late prophase of mitosis is characterised by ... ... [ RPMT 1998 ]
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a) Condensation of chromosomes
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b) Disappearance of nucleolus
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c) Division of centromere
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d) Formation of metaphasic plate
Explanation
Answer : (b)
Q.22
At what stage does the number of chromosomes becomes half ... .... [ RPMT 2005 ]
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a) Prophase I
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b) Metaphase I
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c) Anaphase I
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d) Telophase I
Explanation
Answer : (c)
Q.23
Which is unique to mitosis and does not occur in meiosis? ... ... [ DPMT 2009 ]
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a) Homologous chromosomes cross over
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b) Homologous chromosomes pair and form bivalents
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c) Homologous chromosomes behave independently
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d) Chromatids are separated during anaphase
Explanation
Answer : (c)
Q.24
Meiosis involves ... ... [ CPMT 1995 ]
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a) Two nuclear division and one chromosome division
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b) One nuclear division and one chromosome division
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c) One nuclear division and two chromosome division
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d) Two nuclear divisions and two chromosome divisions
Explanation
Answer : (a)
Q.25
Variation appear during meiosis due to ... ... [ BHU 2001 ]
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a) Independent assortment
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b) Crossing over
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c) Both A and B
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d) Linkages
Explanation
Answer : (c)
Q.26
in mitotic metaphase the limbs of the chromosomes occur ... ....
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a) On the equator
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b) In different directions
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c) In divaricate condition
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d) All the above
Explanation
Answer : (b)
Q.27
Which is not characteristic of telophase Chromatin condenses to form chromosomes Nucleolus, Golgi complex and ER reform Nuclear envelope assemble around chromosomes cluster Centromeres split and chromatids separate Chromosome clusters and their identity is lost ... ... [ kerala 2012 ]
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a) 1, 2, 4 only
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b) 1, 4 only
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c) 2, 3 only
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d) 3, 4, 5 only
Explanation
Answer : (b)
Q.28
Diploid chromosome number being 8, what shall be the number of chromatids in each daughter after meiosis I ... ... [ MPPMT 1993 ]
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a) 16
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b) 8
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c) 4
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d) 2
Explanation
Cells that have paired chromosomes are said to be diploid (or "2n" - 2 copies of each chromosome). In meiosis I, homologous chromosomes separate, Meiosis I produces 2 diploid daughter cells. Genetic recombination (crossing over) only occurs in meiosis I. while in meiosis II, sister chromatids separate. Meiosis II produces 4 haploid daughter cells, T number of chromatids in each daughter after meiosis I will be 8 Answer : (b)
Q.29
In which the number of chromosomes is halved? ... .. [ Pb.PMT1997 ]
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a) Mitosis
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b) Amitosis
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c) Meiosis
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d) Fertilisation
Explanation
Answer : (c)
Q.30
G0 state of cell denotes ... ... [ AIEEE 2003 ]
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a) Exit of cell from cell cycle
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b) Check point before entering next phase
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c) Death of cell
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d) Temporary pause/suspended cell cycle
Explanation
The G0 phase or resting phase is a period in the cell cycle in which cells exist in a quiescent state. G0 phase is viewed as either an extended G1 phase, where the cell is neither dividing nor preparing to divide, or a distinct quiescent stage that occurs outside of the cell cycle. Some types of cells, such as nerve and heart muscle cells, become quiescent when they reach maturity but continue to perform their main functions for the rest of the organism's life. Multinucleated muscle cells that do not undergo cytokinesis are also often considered to be in the G0 stage. On occasion, a distinction in terms is made between a G0 cell and a 'quiescent'( in a state or period of inactivity or dormancy) cell, which will never enter the G1 phase, whereas other G0 cells may. Answer : (d)
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