Significance of mitosis is in .... ... [ Har PMT 1993 ]
6%
a) Increasing cellular mass
11%
b) Swift division
22%
c) Occurrence in every tissue of body
61%
d) Producing cells generically similar to parent cell
Q.3.
The stage in which chiasmata can be seen is ... .. [ HPPMT 2007 ]
11%
a) Leptotene
17%
b) Zygotene
33%
c) Pachytene
39%
d) diplotene
Q.4.
Pachytene belongs to ... ... { AMU 1998 ]
6%
a) Mitosis
75%
b) Meiosis
12%
c) Growth of cell
6%
d) Development of endosperm
Q.5.
Mitosis takes place in ... ...
67%
a) All types of cells except those involved in gamete formation
13%
b) Gonads
7%
c) Axillary buds situated near the apical bud
13%
d) Cells of mature leaf
Q.6.
During metaphase I, the centromeres ... ... [ AMU 1998 ]
33%
a) Undergo division
53%
b) Do not divide
13%
c) Divide but do not separate
0%
d) Are not identical
Q.7.
DNA synthesis occurs during ... ... [ DPMT 2001 ]
67%
a) Interphase
20%
b) Prophase
7%
c) Metaphase
7%
d) Anaphase
Q.8.
Disjunction is ... ....
40%
a) Chromosome separation during mitosis
13%
b) Chromosome separation during prophase I
33%
c) Chromosome separation in anaphase I
13%
d) Chromosome separation during metaphase I
Q.9.
Select the correct matches A) S-phase - DNA replication B) Zygotene - Synapsis C) Diplotene - Crossing over D) Meiosis - Both haploid and diploid cells E) Gap 2 phase - Quiescent stage... .... [ kerala 2011 ]
80%
a) A and B
7%
b) C and D
7%
c) C and E
7%
d) A, C and E
Q.10.
Phragmoplast is precursor of ... .. [ JIPMER 2002 ]
7%
a) Leucoplast
20%
b) Chloroplast
27%
c) Chromoplast
47%
d) Cell plate
Q.11.
What occurs in germinal cells during gamete formation ... ... [ kerala 2000 ]
64%
a) One reduction division and one equational division
14%
b) Two successive equational divisions
21%
c) Two successive reduction division
0%
d) Short prophase in division I
Q.12.
In telophase of mitosis ... ... [ RPMT 1998 ]
21%
a) Chromosomes get arranged in middle of cell
14%
b) Chromosome fibers become clear
57%
c) Chromosomes aggregate at opposite poles to form daughter nuclei
7%
d) Nuclear envelop disappears
Q.13.
A cell divides every minute. It will fill a 100 ml beaker in one hour. How much time would it take to fill 50 ml beaker .... ... [ Kerala 2004 ]
57%
a) 30 minutes
7%
b) 48 minutes
7%
c) 50 minutes
29%
d) 59 minutes
Q.14.
recombination involves .. ... [ DPMT 2009 ]
62%
a) Cross over
15%
b) Chromosome duplication
15%
c) Spindle formation
8%
d) Cytokinesis
Q.15.
During cell cycle, two molecules of DNA are present in chromosome during ... ... [ AIIMS 2001 ]
15%
a) G1 phase
38%
b) Beginning of S-phase
8%
c) G2 phase
38%
d) End of M-phase
Q.16.
Reorganisation of genetic material or genetic recombination occurs during ... ... [ Odisha 2007 ]
15%
a) Metamorphosis
15%
b) Organogenesis
8%
c) Mitosis
62%
d) Meiosis
Q.17.
Spindle fibers are attached to chromosomes in the region of ... ... [ Bih PMT 2011 ]
15%
a) Centrosome
0%
b) Chromosmere
8%
c) Chromonema
77%
d) Kinetochore
Q.18.
Zygotic meiosis occurs in .... ... [ AFMC 1994 ]
8%
a) Pinus
25%
b) Marchantia
50%
c) Chlamydomonas
17%
d) Dryopteris
Q.19.
Synapsis occurs between ... ... [ CBSE 2009 ]
8%
a) Spindle fibers and centromeres
0%
b) mRNA and ribosomes
31%
c) A male and female gamete
62%
d) Two homologous chromosomes
Q.20.
DNA duplication occurs during ... ... [ AMU 2003 ]
15%
a) Early prophase
15%
b) Late prophase
8%
c) Telophase
62%
d) None of the above
Q.21.
In which stage synaptinemal complex dissolved, chromatids become clear and bivalents are called tetrads ... ... [ CET Chd 2006 ] Explanation is provided, please clcik on
23%
a) Zygotene
0%
b) Pachytene
54%
c) Diplotene
23%
d) Diakinesis
Q.22.
Chromosomes separate during ... .. [ DPMT 2003 ]
8%
a) Early prophase
15%
b) Early metaphase
46%
c) Early anaphase
31%
d) Early telophase
Q.23.
Centromere is required for ... ... [ CBSE 2005 ]
15%
a) Crossing over
0%
b) Transcription
8%
c) Cytoplasmic cleavage
77%
d) Movement of chromosomes towards poles
Q.24.
Best stage to observe shape, size and number of chromosomes is ... ... [ JKCMEE 1999]
7%
a) Interphase
57%
b) Metaphase
21%
c) Prophase
14%
d) Telophase
Q.25.
Genetic recombination occurs during ... ... [ Odisha 2003 ]
23%
a) Zygotene
31%
b) Diplotene
46%
c) Pachytene
0%
d) Metaphase - I
Q.26.
G1, S and G2 are stages of ... ... [ AFMC 2009 ]
77%
a) Interphase
8%
b) Prophase
8%
c) Metaphase
8%
d) Anaphase
Q.27.
Meiosis occurs in Tomato in ... ... [ har. PMT 1994 ]
0%
a) Pollen sac and ovule
23%
b) Microspore and megaspore mother cells
69%
c) Both A and B
8%
d) Zygote
Q.28.
Choose the correctly matched pairs and correct option A) Leptotene - Chromosomes become invisible B) Zygotene - Pairing of homologous chromosomes C) Pachytene - Dissolution of synaptonemal complex takes place D) Diplotene - Bivalent chromosomes appears as tetrads E) Terminalisation of chiasmata takes place ... ... [ kerala 2012 ]
23%
a) A and B correct
54%
b) B and D correct
15%
c) B and E correct
8%
d) B and C correct
Q.29.
Arrange the following events of meiosis in correct sequence? 1) Terminalisation 2) Crossing over 3) Synapsis 4) Disjunction
31%
a) 4, 3, 2, 1
62%
b) 3, 2, 1, 4
0%
c) 2, 1, 4, 3
8%
d) 1, 4, 3, 2
Q.30.
Meiosis was discovered by ... ... [ Bih PMT 1994 ]
42%
a) Walther Flemming
25%
b) Hofmeister
33%
c) Oscar Hertwig
0%
d) Amici
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