question_answer 1)
The term "meiosis'' was coined by
A)
Hertwig and Van Bevedin done
clear
B)
Sutton and Boveri done
clear
C)
Hofmeister and Waldeyer done
clear
D)
Farmer and Moore done
clear
View Solution play_arrow
question_answer 2)
Coiling of chromatids in mitotic and meiotic division is [MP PMT 2002]
A)
Paranemic in both done
clear
B)
Plectonemic in both done
clear
C)
Paranemic in mitosis and plectonemic in meiosis done
clear
D)
Plectonemic in mitosis and paranemic in meiosis done
clear
View Solution play_arrow
question_answer 3)
As there occurs more and more condensation of chromatin during cell division, there occurs
A)
Increase in heterochromatin done
clear
B)
Increase in euchromatin done
clear
C)
Differentiation of heterochromatin and euchromatin decreases done
clear
D)
Differentiation of heterochromatin and euchromatin increases done
clear
View Solution play_arrow
question_answer 4)
Condensation of chromosomes occurs in [AFMC 2002]
A)
Prophase I done
clear
B)
Prophase II done
clear
C)
Anaphase done
clear
D)
Metaphase done
clear
View Solution play_arrow
question_answer 5)
The replication of nuclear DNA occurs in [Kashmir MEE 1995; CPMT 1996; MP PMT 1994]
A)
\[{{G}_{1}}\]phase done
clear
B)
\[{{G}_{2}}\]phase done
clear
C)
S phase done
clear
D)
M phase done
clear
View Solution play_arrow
question_answer 6)
The role of meiosis [AFMC 2002]
A)
Formation of gametes done
clear
B)
Bringing haplophase done
clear
C)
Bringing diplophase done
clear
D)
Completing life cycle done
clear
View Solution play_arrow
question_answer 7)
The number of DNA in chromosome at \[{{G}_{2}}\]stage of cell cycle [RPMT 2002]
A)
One done
clear
B)
Two done
clear
C)
Four done
clear
D)
Eight done
clear
View Solution play_arrow
question_answer 8)
Which stage connecting link between Meiosis I and Meiosis II [AFMC 2002]
A)
Interphase I done
clear
B)
Interphase II done
clear
C)
Interkinesis done
clear
D)
Anaphase I done
clear
View Solution play_arrow
question_answer 9)
Which of the following stage is affected by colchicum [BVP 2001; AFMC 2002; Pb. PMT 2004]
A)
Metaphase done
clear
B)
Prophase done
clear
C)
Interphase done
clear
D)
Anaphase done
clear
View Solution play_arrow
question_answer 10)
\[{{G}_{0}}\]state of cells in eukaryotic cell cycle denotes [AIEEE 2003]
A)
Check point before entering the next phase done
clear
B)
Pausing in the middle of a cycle to cope with a temporary delay done
clear
C)
Death of a cell done
clear
D)
Exit of cells from cell cycle done
clear
View Solution play_arrow
question_answer 11)
Synapsis is pairing of [MP PMT 2003]
A)
Any two chromosomes done
clear
B)
Non homologous chromosomes done
clear
C)
Acentric chromosomes done
clear
D)
Homologous chromosomes done
clear
View Solution play_arrow
question_answer 12)
Mitosis occurs in [RPMT 2002]
A)
Haploid individuals done
clear
B)
Diploid individuals done
clear
C)
Both (a) and (b) done
clear
D)
In bacteria only done
clear
View Solution play_arrow
question_answer 13)
Spindle apparatus is formed during which stage of mitosis [AFMC 1999]
A)
Prophase done
clear
B)
Metaphase done
clear
C)
Anaphase done
clear
D)
Telophase done
clear
View Solution play_arrow
question_answer 14)
Cyclin is associated with which one of the following [BHU 2000]
A)
Glycolysis done
clear
B)
Cyclosis done
clear
C)
Haemolysis done
clear
D)
Mitosis done
clear
View Solution play_arrow
question_answer 15)
For viewing diakinesis which one of the following would be a suitable material [MP PMT 2002]
A)
Onion root tip done
clear
B)
Leaf of Dichanthium done
clear
C)
Rat tail done
clear
D)
Flower bud done
clear
View Solution play_arrow
question_answer 16)
Which is not the character of mitosis [MP PMT 2000]
A)
Leptotene done
clear
B)
Zygotene done
clear
C)
Pachytene done
clear
D)
All of the above done
clear
View Solution play_arrow
question_answer 17)
Synaptonemal complex is formed during [CBSE PMT 2001]
A)
Meiosis done
clear
B)
Amitosis done
clear
C)
Mitosis done
clear
D)
Cytokinesis done
clear
View Solution play_arrow
question_answer 18)
Synaptonemal complex was discovered in [BHU 2000]
A)
1956 done
clear
B)
1950 done
clear
C)
1935 done
clear
D)
1980 done
clear
View Solution play_arrow
question_answer 19)
Recombinant nodules are found during which of the following [BHU 2000]
A)
Anaphase done
clear
B)
Prophase done
clear
C)
Telophase done
clear
D)
Metaphase done
clear
View Solution play_arrow
question_answer 20)
Four daughter cells formed after meiosis are [MP PMT 2001]
A)
Genetically similar done
clear
B)
Genetically different done
clear
C)
Anucleate done
clear
D)
Multinucleate done
clear
View Solution play_arrow
question_answer 21)
Bivalents in meiosis are [RPMT 2001]
A)
Tetrad done
clear
B)
Pairs of non-homologous chromosomes done
clear
C)
Pairs of several chromatids done
clear
D)
Pairs of homozygous chromosomes done
clear
View Solution play_arrow
question_answer 22)
Repulsion of homologous chromosomes takes place in [MP PMT 2001]
A)
Zygotene done
clear
B)
Leptotene done
clear
C)
Diakinesis done
clear
D)
Diplotene done
clear
View Solution play_arrow
question_answer 23)
Which cell division is found during cleavage [RPMT 2001]
A)
Amitosis done
clear
B)
Mitosis done
clear
C)
Closed mitosis done
clear
D)
Meiosis done
clear
View Solution play_arrow
question_answer 24)
Which type of cell division occurs in the gonads [RPMT 2001]
A)
Mitosis only done
clear
B)
Meiosis done
clear
C)
Both (a) and (b) done
clear
D)
Amitosis and meiosis done
clear
View Solution play_arrow
question_answer 25)
How many ATP is required during anaphase to move chromosomes from equator to the poles [BHU 2000]
A)
38 ATP done
clear
B)
5 ATP done
clear
C)
30 ATP done
clear
D)
76 ATP done
clear
View Solution play_arrow
question_answer 26)
Mitosis is the process by which eukaryotic cells [Pune CET 1998; CBSE PMT 2000; BHU 2000]
A)
Expose the genes for protein synthesis done
clear
B)
Become specialized in structure and function done
clear
C)
Multiply done
clear
D)
Grow done
clear
View Solution play_arrow
question_answer 27)
In pachytene stage of meiosis the chromosomes appear [BHU 2002]
A)
Single stranded done
clear
B)
Double stranded done
clear
C)
Three stranded done
clear
D)
Four stranded done
clear
View Solution play_arrow
question_answer 28)
The spindle fibre contracts in [KCET 1998]
A)
Metaphase I done
clear
B)
Anaphase II done
clear
C)
Prophase II done
clear
D)
Telophase II done
clear
View Solution play_arrow
question_answer 29)
Recombination of genes occur at [J & K CET 2002]
A)
Prophase in mitosis done
clear
B)
Prophase I in meiosis done
clear
C)
Prophase II in meiosis done
clear
D)
Metaphase II in meiosis done
clear
View Solution play_arrow
question_answer 30)
The second division in meiosis is called [KCET 1998]
A)
Equational division done
clear
B)
Reduction division done
clear
C)
Multiplied division done
clear
D)
None of the above done
clear
View Solution play_arrow
question_answer 31)
The meiotic process by which homologous chromosomes are paired during prophase I is called [Pune CET 1998]
A)
Interkinesis done
clear
B)
Crossing over done
clear
C)
Chiasma done
clear
D)
Synapsis done
clear
View Solution play_arrow
question_answer 32)
At what phase of meiosis are there two cells, each with sister chromatids aligned at the spindle equator [Pune CET 1998; BHU 1999]
A)
Anaphase II done
clear
B)
Metaphase II done
clear
C)
Metaphase I done
clear
D)
Anaphase I done
clear
View Solution play_arrow
question_answer 33)
If there were 4 chromosomes present during prophase, how many chromosomes are there in each cell at the end of anaphase II [Pune CET 1998]
A)
16 done
clear
B)
4 done
clear
C)
2 done
clear
D)
8 done
clear
View Solution play_arrow
question_answer 34)
If at the end of meiosis, the 4 daughter cells have 4 chromosomes, how many chromosomes were in the mother cell [Pune CET 1998]
A)
8 done
clear
B)
16 done
clear
C)
2 done
clear
D)
4 done
clear
View Solution play_arrow
question_answer 35)
How many time meiosis will take place for the formation of 80 wheat grains
A)
100 done
clear
B)
80 done
clear
C)
40 done
clear
D)
99 done
clear
View Solution play_arrow
question_answer 36)
In which type of cell division spindle formation does not occur
A)
Mitosis done
clear
B)
Meiosis done
clear
C)
Endomitosis done
clear
D)
None of the above done
clear
View Solution play_arrow
question_answer 37)
How may mitotic divisions must occur in a cell of root tip to form 256 cells
A)
256 done
clear
B)
8 done
clear
C)
128 done
clear
D)
64 done
clear
View Solution play_arrow
question_answer 38)
The best stage to count the number of chromosomes during mitosis is or structure of chromosomes can be best seen at [BHU 2001; CPMT 2000; CBSE PMT 2004]
A)
Prophase done
clear
B)
Metaphase done
clear
C)
Anaphase done
clear
D)
Telophase done
clear
View Solution play_arrow
question_answer 39)
A repeated cycle of DNA replication without separation of daughter chromatids leads to the formation of
A)
Pachytene chromosome done
clear
B)
Leptotene chromosomes done
clear
C)
Polytene chromosome done
clear
D)
Zygotene chromosomes done
clear
View Solution play_arrow
question_answer 40)
Cytokinesis in plants takes place by the formation of
A)
Sphaeroblasts done
clear
B)
Equatorial cell plate done
clear
C)
Idioblasts done
clear
D)
Cell budding done
clear
View Solution play_arrow
question_answer 41)
In meiosis, the centromere divides during [MP PMT 1997; 2001; BVP 2002]
A)
Prophase-I done
clear
B)
Metaphase-I done
clear
C)
Anaphase-I done
clear
D)
Anaphase-II done
clear
View Solution play_arrow
question_answer 42)
During interphase, RNA and proteins are synthesized in [MP PMT 1997]
A)
S phase done
clear
B)
\[{{G}_{1}}\]phase done
clear
C)
\[{{G}_{2}}\]phase done
clear
D)
In both\[{{G}_{1}}\]and\[{{G}_{2}}\]phases done
clear
View Solution play_arrow
question_answer 43)
Four chromatids and two centromeres which are homologous occurs in [CPMT 1995]
A)
Zygotene done
clear
B)
Diplotene done
clear
C)
Diakinesis done
clear
D)
Pachytene done
clear
View Solution play_arrow
question_answer 44)
The number of chromosome groups at the equatorial plate in metaphase-I of meiosis in a plant with\[2n=50\]shall be[MP PMT 1995, 98]
A)
50 done
clear
B)
25 done
clear
C)
30 done
clear
D)
100 done
clear
View Solution play_arrow
question_answer 45)
The significance of meiosis lies in [MP PMT 1995, 98; BVP 2003]
A)
Reduction of the diploid number of chromosomes to haploid done
clear
B)
Maintaining constancy in the number of diploid chromosomes during sexual reproduction done
clear
C)
Production of genetic variability in the population of a species done
clear
D)
All the above done
clear
View Solution play_arrow
question_answer 46)
Mitosis results in
A)
Reduction in chromosome number done
clear
B)
Doubling of chromosome number done
clear
C)
Constant chromosome number done
clear
D)
Increase in cell volume done
clear
View Solution play_arrow
question_answer 47)
In which phase of mitosis the chromosomes are arranged around the equator of the spindle [Manipal MEE 1995]
A)
Prophase done
clear
B)
Metaphase done
clear
C)
Anaphase done
clear
D)
Telophase done
clear
View Solution play_arrow
question_answer 48)
Which one of the following pairs is correctly matched [MP PMT 1993]
A)
Anaphase I Homologous chromosomes are separated done
clear
B)
Metaphase I Pairing of maternal and paternal homologous chromosomes takes place done
clear
C)
Interphase A nuclear envelope encloses each haploid set of chromo somes done
clear
D)
Prophase I Non-homologous chromosomes are separated done
clear
View Solution play_arrow
question_answer 49)
Mitosis and meiosis take place respectively in [AMU 1991]
A)
Meristem and gametangia done
clear
B)
Gametangia and meristem done
clear
C)
Permanent tissues and secretory tissues done
clear
D)
Secretory tissues and permanent tissues done
clear
View Solution play_arrow
question_answer 50)
An anaphase chromosome contains [DPMT 1991]
A)
1 DNA molecule done
clear
B)
3 DNA molecule done
clear
C)
2 DNA molecule done
clear
D)
4 DNA molecule done
clear
View Solution play_arrow
question_answer 51)
Match List I and List II and select the correct answer using the code given below in the lists : List I List II (Phase of meiosis) (Event that occurs) 1. Prophase I Crossing over occurs 2. Metaphase I Sister chromatids migrate to opposite poles 3. Anaphase I Homologous line up at equator in pairs Code: [MP PMT 1993]
A)
1, 2 and 3 are correct done
clear
B)
1 and 2 are correct, 3 is false done
clear
C)
1 is correct, 2 and 3 are false done
clear
D)
1 and 3 are correct, 2 is false done
clear
View Solution play_arrow
question_answer 52)
Chromosome number is halved in meiosis during
A)
Metaphase-I done
clear
B)
Anaphase-I done
clear
C)
Metaphase-II done
clear
D)
Telophase-I done
clear
View Solution play_arrow
question_answer 53)
Chromosome start separating at which stage of mitosis [AFMC 1996]
A)
Early metaphase done
clear
B)
Late metaphase done
clear
C)
Early anaphase done
clear
D)
Early telophase done
clear
View Solution play_arrow
question_answer 54)
Normal cellular activities, such as protein synthesis occur primarily during [Pune CET 1998]
A)
Interphase done
clear
B)
Anaphase done
clear
C)
Metaphase done
clear
D)
Prophase done
clear
View Solution play_arrow
question_answer 55)
At\[{{G}_{1}}\]stage which phenomenon takes place [AFMC 1995]
A)
DNA synthesis done
clear
B)
RNA synthesis done
clear
C)
Reverse transcription done
clear
D)
All of the above done
clear
View Solution play_arrow
question_answer 56)
In mitosis the movement of chromosomes requires [CPMT 1993]
A)
Presence of centromere done
clear
B)
Plasmalemma done
clear
C)
Spindle fibres done
clear
D)
Nucleotides done
clear
View Solution play_arrow
question_answer 57)
DNA replication occurs during [MDAT Bihar 1995; MP PMT 2005]
A)
Prophase done
clear
B)
Metaphase done
clear
C)
Anaphase done
clear
D)
Interphase done
clear
E)
Leptotene done
clear
View Solution play_arrow
question_answer 58)
Terminalization occurs in which stage [AFMC 1995]
A)
Pachytene done
clear
B)
Diplotene done
clear
C)
Zygotene done
clear
D)
Diakinesis done
clear
View Solution play_arrow
question_answer 59)
Strasburger is famous for
A)
Discovery of cell division done
clear
B)
Proposing the term nucleoplasm done
clear
C)
Proposing the term cytoplasm done
clear
D)
All of these done
clear
View Solution play_arrow
question_answer 60)
During cell division, sometimes there will be failure of separation of sister chromatids. This event is called [Kerala PMT 2004]
A)
Interference done
clear
B)
Complementation done
clear
C)
Coincidence done
clear
D)
Non-disjunction done
clear
View Solution play_arrow
question_answer 61)
If a cell has a chromosome number after first meiosis equal to 48. The chromosome number in the daughter cells after the completion of meiosis will be [BHU 2001]
A)
48 done
clear
B)
24 done
clear
C)
12 done
clear
D)
36 done
clear
View Solution play_arrow
question_answer 62)
A cell in prophase of mitosis can be distinguished from a cell in prophase-I of meiosis by
A)
The presence of only half as many chromosomes in the meiotic cell done
clear
B)
The formation of tetrads in the meiotic cell done
clear
C)
The presence of twice as many chromosomes in the meiotic cell done
clear
D)
None of the above done
clear
View Solution play_arrow
question_answer 63)
In mitosis nucleolus and nuclear membrane disappear at [AFMC 1996]
A)
Interphase done
clear
B)
Prophase done
clear
C)
Metaphate done
clear
D)
Telophase done
clear
View Solution play_arrow
question_answer 64)
Chiasmata formation occurs during [CPMT 1981, 89, 91, 2004; MP PMT 1984, 87, 94, 2002, 03]
A)
Diplotene done
clear
B)
Leptotene done
clear
C)
Pachytene done
clear
D)
Diakinesis done
clear
View Solution play_arrow
question_answer 65)
During the first metaphase of meiosis the centromeres [MP PMT 1994]
A)
Undergo division done
clear
B)
Do not divide done
clear
C)
Divide but do not separate done
clear
D)
Are not identical done
clear
View Solution play_arrow
question_answer 66)
The number of chromatids in a chromosome at anaphase is [CBSE PMT 1992; BHU 1994; AFMC 1995]
A)
2 in mitosis and 1 in meiosis done
clear
B)
1 in mitosis and 2 in meiosis done
clear
C)
2 each in mitosis and meiosis done
clear
D)
2 in mitosis and 4 in meiosis done
clear
View Solution play_arrow
question_answer 67)
In mitosis the duplication of chromosomes occurs during [MP PMT 1994; BHU 2002]
A)
Early prophase done
clear
B)
Late prophase done
clear
C)
Interphase done
clear
D)
Late telophase done
clear
View Solution play_arrow
question_answer 68)
Cell division in blue-green algae is more or less similar to that in [MP PMT 1994]
A)
Red algae done
clear
B)
Green algae done
clear
C)
Brown algae done
clear
D)
Bacteria done
clear
View Solution play_arrow
question_answer 69)
Which out of the following is not a divisional stage [DPMT 1991]
A)
Telophase done
clear
B)
Interphase done
clear
C)
Metaphase done
clear
D)
Prophase done
clear
View Solution play_arrow
question_answer 70)
When, during the meiotic division, do the homologous chromosomes pair with each other [MP PMT 1996]
A)
Leptotene done
clear
B)
Pachytene done
clear
C)
Zygotene done
clear
D)
Metaphase-I done
clear
View Solution play_arrow
question_answer 71)
Between mitosis a cell is called to be in the [AMU 1990]
A)
Resting stage done
clear
B)
Sleeping stage done
clear
C)
Active stage done
clear
D)
None of these done
clear
View Solution play_arrow
question_answer 72)
The process of mitosis is divided into 4 phases. Identify the correct order in which these phases appear in mitosis [MP PMT 1993]
A)
Anaphase, metaphase, telophase and prophase done
clear
B)
Telophase, anaphase, metaphase and prophase done
clear
C)
Metaphase, prophase, anaphase and telophase done
clear
D)
Prophase, metaphase, anaphase and telophase done
clear
View Solution play_arrow
question_answer 73)
Meiosis and mitosis differ from each other because in meiosis [AMU 1991; CPMT 1993]
A)
The four nuclei formed are not similar to parental ones done
clear
B)
Homologous chromosomes pair are exchange parts done
clear
C)
Number of chromosomes gets halved done
clear
D)
All the above done
clear
View Solution play_arrow
question_answer 74)
Cell division is initiated by [CBSE PMT 1993]
A)
Centrosome done
clear
B)
Centriole done
clear
C)
Centromere done
clear
D)
Chromomere done
clear
View Solution play_arrow
question_answer 75)
"Endomitosis'' refers to
A)
Division of nucleus without chromosomal division done
clear
B)
Division of chromosome without nuclear division done
clear
C)
Division of cytoplasm done
clear
D)
None of the above done
clear
View Solution play_arrow
question_answer 76)
The homologous chromosomes follow the process of synapsis in the stage or Pairing of homologous chromosome takes place in [DPMT 1990, 91; RPMT 1997; MP PMT 1999; BHU 2003; Haryana PMT 2005]
A)
Leptotene done
clear
B)
Zygotene done
clear
C)
Diplotene done
clear
D)
Pachytene done
clear
View Solution play_arrow
question_answer 77)
Crossing over is advantageous because it brings about [MP PMT 1992]
A)
Variation done
clear
B)
Linkage done
clear
C)
Inbreeding done
clear
D)
Stability done
clear
View Solution play_arrow
question_answer 78)
The process of mitosis can be studied in [CPMT 1998; MHCET 2001; CBSE PMT 2002]
A)
Onion root tip done
clear
B)
Garlic root tip done
clear
C)
Tendril tip done
clear
D)
All of the above done
clear
View Solution play_arrow
question_answer 79)
The process by which the chromosomes are separated in the sex cells and their number reduced from the diploid to haploid condition is known as [DPMT 1991]
A)
Division done
clear
B)
Mitosis done
clear
C)
Conjugation done
clear
D)
Meiosis done
clear
View Solution play_arrow
question_answer 80)
In which of the following stages chromosomes are attached on equatorial plane [CPMT 1998; Kerela CET 2002; BVP 2002]
A)
Metaphase done
clear
B)
Anaphase done
clear
C)
Telophase done
clear
D)
None of these done
clear
View Solution play_arrow
question_answer 81)
Period of active mitosis ranges from [DPMT 1991]
A)
10 minutes to a few hours done
clear
B)
A few hours to a one day done
clear
C)
One day to a week done
clear
D)
Less than a minute done
clear
View Solution play_arrow
question_answer 82)
Meiosis was discovered by [Bihar MDAT 1994]
A)
Sutton done
clear
B)
Hofmeister done
clear
C)
Strasburger done
clear
D)
Amici done
clear
View Solution play_arrow
question_answer 83)
How many meiotic divisions will be necessary to produce two hundred pollen grains [DPMT 1992; MP PMT 1999]
A)
50 done
clear
B)
100 done
clear
C)
199 done
clear
D)
150 done
clear
View Solution play_arrow
question_answer 84)
Prophase of reduction division is divided into number of stages. The correct chronological sequence is [CMC Vellore 1993; CPMT 1974, 96, 2000; KCET 1999; Orissa PMT 2002; HP PMT 2005]
A)
Leptotene - pachytene - zygotene - diplotene - diakinesis done
clear
B)
Leptotene - diplotene - pachytene - zygotene - diakinesis done
clear
C)
Leptotene - zygotene - diplotene - pachytene - diakinesis done
clear
D)
Leptotene - zygotene - pachytene - diplotene - diakinesis done
clear
View Solution play_arrow
question_answer 85)
If for a species 2n = 16, then during Ist prophase and IInd prophase of meiotic division of a cell, how many tetrads and diads will be formed
A)
4 and 4 done
clear
B)
8 and 4 done
clear
C)
8 and 8 done
clear
D)
4 and 8 done
clear
View Solution play_arrow
question_answer 86)
Regarding the sequence of cell cycle, which one is correct [MP PMT 1998; AIIMS 1999; CPMT 2002]
A)
\[{{G}_{1}},\text{ }{{G}_{2}},SandM\] done
clear
B)
\[S,\text{ }{{G}_{1}},\text{ }{{G}_{2}},\text{ }andM\] done
clear
C)
\[{{G}_{1}},S,{{G}_{2}}andM\] done
clear
D)
\[{{G}_{2}},S,{{G}_{1}},\text{ }andM\] done
clear
View Solution play_arrow
question_answer 87)
Mitotic index means
A)
Rate of mitotic division done
clear
B)
Ratio of mitotic and meiotic division done
clear
C)
Ratio of dividing and non-dividing cells done
clear
D)
None of the above done
clear
View Solution play_arrow
question_answer 88)
Pachytene occurs during [MP PMT 1994]
A)
Meiosis done
clear
B)
Mitosis done
clear
C)
Growth of a cell done
clear
D)
Formation of endosperm done
clear
View Solution play_arrow
question_answer 89)
In which of the following meiosis takes place [MP PMT 1992]
A)
Pollen grains done
clear
B)
Pollen tube done
clear
C)
Pollen mother cells done
clear
D)
Generative cells done
clear
View Solution play_arrow
question_answer 90)
Which of the following is the shortest phase of the cell cycle
A)
S phase done
clear
B)
\[{{G}_{1}}\]phase done
clear
C)
\[{{G}_{2}}\]phase done
clear
D)
M phase done
clear
View Solution play_arrow
question_answer 91)
Which of the following position is the base to define the formation place of cell plate at the end of nuclear division [AMU 2005]
A)
Microtubulus done
clear
B)
Vesicles done
clear
C)
Endoplasmic reticulum done
clear
D)
Golgi body done
clear
View Solution play_arrow
question_answer 92)
\[{{G}_{2}}\]phase of mitosis takes [BVP 2003]
A)
50% time of cell cycle done
clear
B)
25 to 33% time of cell cycle done
clear
C)
12 to 16% time of cell cycle done
clear
D)
4% time of cell cycle done
clear
View Solution play_arrow
question_answer 93)
Which of the following will show simple cell division
A)
Microspore mother cells done
clear
B)
Megaspore mother cells done
clear
C)
Archesporial cells done
clear
D)
All the above done
clear
View Solution play_arrow
question_answer 94)
The force responsible for the terminalization at the time of cell division is
A)
Chemostatic done
clear
B)
Galvanostatic done
clear
C)
Electrostatic done
clear
D)
None of the above done
clear
View Solution play_arrow
question_answer 95)
Interphase of mitosis in man takes
A)
12 hours done
clear
B)
10 hours done
clear
C)
3 hours done
clear
D)
25 hours done
clear
View Solution play_arrow
question_answer 96)
In animal cell cytokinesis takes place by
A)
Cell furrow method done
clear
B)
Cell plate method done
clear
C)
Both (a) and (b) done
clear
D)
No cytokinesis takes place done
clear
View Solution play_arrow
question_answer 97)
Prophase is longer in [Manipal MEE 1995; CPMT 2001; MHCET 2001]
A)
Mitosis done
clear
B)
Meiosis done
clear
C)
Equal in both done
clear
D)
Amitosis done
clear
View Solution play_arrow
question_answer 98)
In one meiotic cell division, the cell divides
A)
Once done
clear
B)
Twice done
clear
C)
Thrice done
clear
D)
Four times done
clear
View Solution play_arrow
question_answer 99)
In pollen mother cells cytokinesis during meiosis is
A)
Successive type done
clear
B)
Simultaneous type done
clear
C)
In some cases successive type while in others simultaneous type done
clear
D)
No cytokinesis takes place done
clear
View Solution play_arrow
question_answer 100)
Mitotic crossing over takes place in
A)
Normal mitosis done
clear
B)
Normal sexual cycle done
clear
C)
Parasexual cycle done
clear
D)
Lytic cycle done
clear
View Solution play_arrow
question_answer 101)
The term "mitosis'' was proposed by
A)
Flemming done
clear
B)
Farmer done
clear
C)
Moore done
clear
D)
Boveri done
clear
View Solution play_arrow
question_answer 102)
In cancer cells [DPMT 1974]
A)
Meiosis takes place done
clear
B)
Mitosis takes place done
clear
C)
Sometimes meiosis and sometimes mitosis take place done
clear
D)
Cell division stops done
clear
View Solution play_arrow
question_answer 103)
Which of the following structure will not be common to mitotic cell of a higher plant [CBSE PMT 1997]
A)
Cell plate done
clear
B)
Centromere done
clear
C)
Centriole done
clear
D)
Spindle fibre done
clear
View Solution play_arrow
question_answer 104)
How many mitotic divisions are needed for a single cell to make 128 cells [CBSE PMT 1997; AFMC 1999]
A)
7 done
clear
B)
14 done
clear
C)
28 done
clear
D)
32 done
clear
View Solution play_arrow
question_answer 105)
Which one of the following forms the spindle apparatus during cell division [Kerala CET 2002]
A)
Chromosome done
clear
B)
Centrosome done
clear
C)
Ribosome done
clear
D)
Chondriosome done
clear
View Solution play_arrow
question_answer 106)
During cell division in apical meristem nuclear membrane reappears in [CBSE PMT 1997]
A)
Interphase done
clear
B)
Telophase done
clear
C)
Prophase done
clear
D)
S phase done
clear
View Solution play_arrow
question_answer 107)
Meiosis is significant because
A)
It produces identical cells done
clear
B)
It restores the original number of chromosomes (after fertilization) done
clear
C)
There is doubling of DNA contents in the cell done
clear
D)
It occurs only in vegetative cells done
clear
View Solution play_arrow
question_answer 108)
How many reduction divisions are necessary for the formation of 200 grains of wheat [MHCET 2002]
A)
250 done
clear
B)
150 done
clear
C)
200 done
clear
D)
360 done
clear
View Solution play_arrow
question_answer 109)
In mitotic cell division
A)
Number of chromosomes is doubled at the end done
clear
B)
Number of chromosomes is reduced to half done
clear
C)
Number of chromosomes remain unchanged done
clear
D)
There is no division of chromosomes done
clear
View Solution play_arrow
question_answer 110)
Meiosis differs from mitosis as
A)
It takes place in vegetative cells done
clear
B)
It shows crossing over done
clear
C)
It forms two cells done
clear
D)
Number of chromosomes remain unchanged done
clear
View Solution play_arrow
question_answer 111)
During mitosis chromosomes go to their poles in a stage called [CPMT 1994; MP PMT 2001; DPMT 2003; BHU 2004]
A)
Prophase done
clear
B)
Metaphase done
clear
C)
Anaphase done
clear
D)
Telophase done
clear
View Solution play_arrow
question_answer 112)
When, during the meiotic division, do the centromeres divide [MP PMT 1996; CBSE PMT 2000]
A)
Diplotene done
clear
B)
Metaphase-I done
clear
C)
Pachytene done
clear
D)
Anaphase-II done
clear
View Solution play_arrow
question_answer 113)
DNA replication takes place in [CPMT 1991, 2001; BHU 1981; CBSE PMT 1996, 2001; or DNA molecule of each chromosome become double in RPMT 1997; Bihar MDAT 1992;Pb. PMT 1999; MP PMT 1999, 2001, 02]
A)
\[{{G}_{1}}\] phase done
clear
B)
\[{{G}_{2}}\] phase done
clear
C)
S phase done
clear
D)
Mitotic phase done
clear
View Solution play_arrow
question_answer 114)
What happens in mitosis
A)
Many divisions of a nucleus done
clear
B)
Cleavage of cytoplasm done
clear
C)
Nuclear and cytoplasmic division done
clear
D)
Formation of a paternal nucleus done
clear
View Solution play_arrow
question_answer 115)
The number of chromosomes after I phase of meiotic division in reduction division [CPMT 1992, 94]
A)
Remain unchanged done
clear
B)
Become doubled done
clear
C)
Become halved done
clear
D)
None of the above done
clear
View Solution play_arrow
question_answer 116)
Meiosis can be observed in [CPMT 1994; MP PMT 1996]
A)
Root tips done
clear
B)
Cambium done
clear
C)
Anther (PMC) done
clear
D)
Pollen grains done
clear
View Solution play_arrow
question_answer 117)
The decision for division occurs in a cell at
A)
S phase done
clear
B)
\[{{G}_{2}}\]phase done
clear
C)
\[{{G}_{1}}\]phase done
clear
D)
None of the above done
clear
View Solution play_arrow
question_answer 118)
Cellular structure always disappears during mitosis is [DPMT 1990]
A)
Cell wall done
clear
B)
Cell membrane done
clear
C)
Nucleolus done
clear
D)
All the above done
clear
View Solution play_arrow
question_answer 119)
Which of the following cell division is found in prokaryotic cells
A)
Mitosis done
clear
B)
Meiosis done
clear
C)
Amitosis done
clear
D)
All the above done
clear
View Solution play_arrow
question_answer 120)
Phragmoplast is precursor of [MP PMT 1994; MHCET 2001; Orissa JEE 2004]
A)
Cell plate done
clear
B)
Chloroplast done
clear
C)
Chromoplast done
clear
D)
Colourless plastid done
clear
View Solution play_arrow
question_answer 121)
Cell plate is referred as [DPMT 1981; JIPMER 2002]
A)
Germplast done
clear
B)
Idioblast done
clear
C)
Phragmoplast done
clear
D)
Middle lamella done
clear
View Solution play_arrow
question_answer 122)
The replication of centrioles occurs during [MP PMT 1994; BHU 2004]
A)
Early prophase done
clear
B)
Late prophase done
clear
C)
Late telophase done
clear
D)
Interphase done
clear
View Solution play_arrow
question_answer 123)
Karyokinesis differ from cytokinesis because it involves [MP PMT 1994, 2003]
A)
Division of cytoplasm done
clear
B)
Division of the nucleus and cytoplasm done
clear
C)
Division of the nucleus done
clear
D)
Division of the cell done
clear
View Solution play_arrow
question_answer 124)
If nucleus represents its large size in proportion to cytoplasm of cell, it indicates that
A)
Cell is dying done
clear
B)
The nucleolus is in resting phase done
clear
C)
The nucleus has entered S-phase of interphase done
clear
D)
Cell is about to die done
clear
View Solution play_arrow
question_answer 125)
The nuclear membrane disappears in [CPMT 1993; MP PMT 1995, 98; J&K CET 2002]
A)
Metaphase done
clear
B)
Early prophase done
clear
C)
Late prophase done
clear
D)
Anaphase done
clear
View Solution play_arrow
question_answer 126)
Chromonemata start associating into bivalent chromosomes during [MP PMT 1997; J&K CET 2002]
A)
Zygotene done
clear
B)
Leptotene done
clear
C)
Pachytene done
clear
D)
Diplotene done
clear
View Solution play_arrow
question_answer 127)
An acrocentric chromosome at metaphase will be
A)
Condensed and lie near the equator done
clear
B)
Irregularly shaped and lie at one of the poles done
clear
C)
Condensed and lie at poles done
clear
D)
Coiled and get attached to spindle fibre done
clear
View Solution play_arrow
question_answer 128)
Constancy of the chromosome number in successive generations is brought by the process of [AMU 1990; MP PMT 2003]
A)
Mitosis done
clear
B)
Meiosis done
clear
C)
Conjugation done
clear
D)
None of these done
clear
View Solution play_arrow
question_answer 129)
In an organism, if the normal diploid number of chromosomes is 8, how many chromatids are present in each daughter cell at the end of meiosis I [MP PMT 1993]
A)
2 done
clear
B)
4 done
clear
C)
8 done
clear
D)
16 done
clear
View Solution play_arrow
question_answer 130)
The study of chromosomes at meiotic diplotene shows that [CMC Vellore 1993; AIIMS 1985]
A)
The intimately paired chromosomes repel each other and begin to separate done
clear
B)
The pairing of homologous chromosomes which had initiated in the earlier stage is completed done
clear
C)
The homologous chromosomes remain united by chiasmata done
clear
D)
None of the above done
clear
View Solution play_arrow
question_answer 131)
The points at which crossing over has taken place between homologous chromosomes are called [Pune CET 1998; BHU 2001]
A)
Protein axis done
clear
B)
Synaptonemal complexes done
clear
C)
Chiasmata done
clear
D)
Centromeres done
clear
View Solution play_arrow
question_answer 132)
How many meiotic division would be required to produce 101 female gametophytes in an angiosperm [Pb. PMT 1997]
A)
101 done
clear
B)
26 done
clear
C)
127 done
clear
D)
None of these done
clear
View Solution play_arrow
question_answer 133)
Which effect is imparted by colchicine
A)
Duplication of DNA done
clear
B)
Duplication in number of chromosomes done
clear
C)
Formation of spindle fibres done
clear
D)
Inhibits cell plate formation done
clear
View Solution play_arrow
question_answer 134)
In which of the following stage, the chromosome is thin and like long thread [AFMC 1997]
A)
Leptotene done
clear
B)
Zygotene done
clear
C)
Pachytene done
clear
D)
Diakinesis done
clear
View Solution play_arrow
question_answer 135)
Exchange of chromosome segments between maternal and paternal chromatids during meiosis is called [DPMT 1990; CBSE PMT 2000]
A)
Linkage done
clear
B)
Dominance done
clear
C)
Crossing over done
clear
D)
DNA multiplication done
clear
View Solution play_arrow
question_answer 136)
Spindle fibres are made up of [MP PMT 1986; AIIMS 2001]
A)
Proteins done
clear
B)
Cellulose done
clear
C)
Lipids done
clear
D)
Pectin done
clear
View Solution play_arrow
question_answer 137)
Anastral mitosis is found in [MHCET 2001]
A)
Animals done
clear
B)
Higher plants done
clear
C)
Bacteria done
clear
D)
Cyanobacteria done
clear
View Solution play_arrow
question_answer 138)
Which is not true for anaphase [Orissa JEE 2004]
A)
Golgi body and ER are reformed done
clear
B)
Chromosomes move to opposite poles done
clear
C)
Spindle poles move farther apart done
clear
D)
Centromeres split and chromatids separate done
clear
View Solution play_arrow
question_answer 139)
In which phase proteins for spindle fibre formation are synthesized [Orissa JEE 2004]
A)
\[{{G}_{1}}\]phase done
clear
B)
\[{{G}_{2}}\]phase done
clear
C)
S-phase done
clear
D)
Anaphase done
clear
View Solution play_arrow
question_answer 140)
In eukaryotic cell cycle, cell fusion experiments show that [AIEEE 2004]
A)
When an S-phase cell is fused with a \[{{G}_{1}}-\]phase cell, \[{{G}_{1}}-\]phase cell is stimulated to synthesize DNA done
clear
B)
When an S-phase cell is fused with a G1-phase cell done
clear
C)
When a \[{{G}_{1}}-\]phase cell is fused with a \[{{G}_{1}}-\]phase cell, DNA synthesis is induced in both \[{{G}_{1}}\] and \[{{G}_{2}}\] phase cells done
clear
D)
When a \[{{G}_{1}}-\]phase cell is fused with an M-phase done
clear
View Solution play_arrow
question_answer 141)
Which is synthesized in \[{{G}_{1}}\] phase [CPMT 2004]
A)
DNA polymerase done
clear
B)
Histones done
clear
C)
Nucleolar DNA done
clear
D)
Tubulin protein done
clear
View Solution play_arrow
question_answer 142)
DNA and histone proteins are synthesized during the following phase of cell cycle [DPMT 2004; CBSE PMT 2005]
A)
S phase done
clear
B)
\[{{G}_{2}}\]phase done
clear
C)
\[{{G}_{1}}\]phase done
clear
D)
None of these done
clear
View Solution play_arrow
question_answer 143)
At which phase of meiosis, the two cells, each with separated sister chromatids move towards opposite poles [Pb. PMT 2004]
A)
Metaphase I done
clear
B)
Metaphase II done
clear
C)
Anaphase I done
clear
D)
Anaphase II done
clear
View Solution play_arrow
question_answer 144)
Which one of the following precedes re-formation of the nuclear envelope during M phase of the cell cycle [CBSE PMT 2004]
A)
Formation of the contractile ring, and formation of the phragmoplast done
clear
B)
Formation of the contractile ring, and transcription from chromosomes done
clear
C)
Decondensation from chromosomes, and reassembly of the nuclear lamine done
clear
D)
Transcription from chromosomes, and ressembly of the nuclear lamina done
clear
View Solution play_arrow
question_answer 145)
In the somatic cell cycle [CBSE PMT 2004]
A)
A short interphase is followed by a long mitotic phase done
clear
B)
\[{{G}_{2}}\]phase follows mitotic phase done
clear
C)
In \[{{G}_{1}}\]phase DNA content is double the amount of DNA present in the original cell done
clear
D)
DNA replication takes place in S-phase done
clear
View Solution play_arrow
question_answer 146)
During cell division chromosome attaches with spindles [Manipal 2005]
A)
Kinetochore done
clear
B)
Centrosome done
clear
C)
Centriole done
clear
D)
Secondary constriction done
clear
View Solution play_arrow
question_answer 147)
During the meiotic division the [BHU 2005]
A)
Homologous chromosomes are separated done
clear
B)
The linkage is disturbed done
clear
C)
The homologous chromosomes do not segregate done
clear
D)
All of the above done
clear
View Solution play_arrow
question_answer 148)
During the\[{{G}_{1}}\]phase of cell division [BHU 2005]
A)
RNA and proteins are synthesized done
clear
B)
DNA and proteins are synthesized done
clear
C)
Cell prepares for M-phase done
clear
D)
Cell undergoes duplication done
clear
View Solution play_arrow
question_answer 149)
Meiosis is found at [MP PMT 2005]
A)
Shoot apex done
clear
B)
Reproductive part done
clear
C)
Leaves bud done
clear
D)
Vegetative parts done
clear
View Solution play_arrow
question_answer 150)
Homologous pairing in prophase I of meiosis I is called [MP PMT 2005]
A)
Synapsis done
clear
B)
Linkage done
clear
C)
Crossing over done
clear
D)
Syndesis done
clear
View Solution play_arrow
question_answer 151)
In meiosis the daughter cells are not similar to that of parent because of [AFMC 2005]
A)
Crossing over done
clear
B)
Synapsis done
clear
C)
Both (a) and (b) done
clear
D)
None of these done
clear
View Solution play_arrow
question_answer 152)
Diploid living organism develops from zygote by repeated cell divisions is called [J&K CET 2005]
A)
Meiosis done
clear
B)
Amitosis done
clear
C)
Mitosis done
clear
D)
Segmentation done
clear
View Solution play_arrow