Female gametophyte is
Anonymous Quiz
48%
Embryo sac
5%
Microsporophyll
41%
Megasporangium
6%
Microsporangia
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A typical angiosperm female gametophyte at maturity contains
Anonymous Quiz
6%
6 cells and 7 nuclei
4%
7 cells and 6 nuclei
75%
7 cells and 8 nuclei
15%
8 cells and 7 nuclei
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A cell cycle includes
Anonymous Quiz
66%
interphase and M phase
12%
G1,S and G2 phases
15%
Karyokinesis and cytokinesis
7%
prophase, metaphase, anaphase and telophase
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Of the total duration of cell cycle of a human cell,cell division properly lasts for about
Anonymous Quiz
19%
90 minutes
11%
Half an hour
34%
23 hours
36%
An hour
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Of the total duration of cell cycle, the interphase lasts more than
Anonymous Quiz
77%
95 %
15%
90 %
3%
92 %
5%
5 %
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Which phase corresponds to the interval between
mitosis and initiation of DNA replication?
mitosis and initiation of DNA replication?
Anonymous Quiz
62%
Gap 1/G1, phase
22%
Synthesis/S phase
9%
M phase
7%
Gap 2/G2, phase
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Recombination involves
Anonymous Quiz
84%
Crossing over
9%
Chromosome duplication
5%
Spindle formation
2%
Cytokinesis
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Crossing over takes place in
Anonymous Quiz
15%
Metaphase - I
14%
Anaphase- I
13%
Prophase-II
58%
Prophase-I
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Non-sister chromatids exchange segments during
Anonymous Quiz
21%
Zygotene
10%
Leptotene
15%
Diplotene
54%
Pachytene
π9
Crossing over requires an enzyme
Anonymous Quiz
86%
Recombinase
7%
Ligase
6%
Polymerase
2%
Endonuclease
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Terminalisation occurs during
Anonymous Quiz
10%
Meiosis II
61%
Diakinesis
21%
Diplotene
7%
Anaphase-I
β‘4π4
Which of the following produce assured seed set even in the absence of pollinators
Anonymous Quiz
15%
Chasmogamy
66%
Cleistogamy
11%
Geitonogamy
8%
Xenogamy
π5π2π€1
Viola, oxalis and commelina produce ________ types of flowers
Anonymous Quiz
14%
Chasmogamy
29%
Cleistogamy
7%
Unisexual flower
49%
Both a and b
π7π2π₯1π₯°1π€1
π8π₯°2
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Which of the following does not shift the oxyhaemoglobin dissociation curve to the right
Anonymous Quiz
21%
Decrease in pO2
26%
Increase in pCO2
13%
Increase in temperature
40%
Decrease in H+ concentration
π8β€6
Which of the following is made of cartilage and known as sound box
Anonymous Quiz
2%
Nasal septum
88%
Larynx
4%
Glottis
6%
Trachea
π17β€3