Which of the following cellular structures always disappears during mitosis and
meiosis?
meiosis?
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5%
Plastid and nuclear membrane
69%
Nucleolus and nuclear membrane
17%
Endoplasmic reticulum and mitochondria
9%
Endoplasmic reticulum and plasma membrane
Two sister chromatids are attached with
Anonymous Quiz
4%
Chromocentre
13%
Spindle fibre
78%
Centromere
5%
Chromatid
Chiasma represents the sites of
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11%
Synapsis
72%
Crossing over
5%
Disjunction
12%
Terminalisation
During anaphase-I
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11%
Bivalent divides transversely
68%
Homologues move towards opposite poles
18%
Chromatids separate out
3%
Tetravalents are formed.
The process of cytokinesis refers to the division of
Anonymous Quiz
5%
Nucleus
89%
Cytoplasm
4%
Chromosmes
2%
None of these
Which of the following compounds will not undergo decomposition on passing electricity
through aqueous solution?
through aqueous solution?
Anonymous Quiz
70%
Sugar
13%
Sodium Chloride
6%
Sodium Bromide
11%
Sodium acetate
Charge required to liberate 11.5 g sodium is
Anonymous Quiz
68%
0.5 F
9%
0.1 F
10%
1.5 F
13%
96500 coulombs
One Faraday of electricity when passed through a solution of copper sulphate deposits
Anonymous Quiz
22%
1 mole of Cu
9%
1 gm atom of Cu
6%
1 molecule of Cu
62%
1gm equivalent of Cu
Coconut water from a tender coconut is
Anonymous Quiz
2%
Immature embryo
95%
Free-nuclear endosperm
1%
Innermost layers of the seed coat
1%
Degenerated nucellus
Pollen tablets are available in the market for
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2%
In vitro fertilization
2%
Breeding programmes
93%
Supplementing food
3%
Ex situ conservation
Which one of the following statements is correct?
Anonymous Quiz
5%
The seed in grasses is not endospermic
12%
Mango is a parthenocarpic fruit
70%
A proteinaceous aleurone layer is present in maize grain
13%
A sterile pistil is called a staminode
Emasculation ensures cross-pollination in
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6%
Staminate flower
89%
Bisexual flower
1%
Neuter flower
4%
Pistillate flower
Mendel conducted hybridization experiments on garden pea from:
Anonymous Quiz
1%
1842-1847
94%
1856-1863
4%
1863-1873
0%
1820-1831
The movement of solvent molecules through a semi-permeable membrane is called:
Anonymous Quiz
23%
Diffusion
75%
Osmosis
2%
Filtration
0%
Adsorption
Which of the following processes is exothermic?
Anonymous Quiz
14%
Melting of ice
14%
Evaporation of water
67%
Combustion of fuel
5%
Boiling of water