Which of the following was signed to control the emission of ozone depleting substances?
Anonymous Quiz
33%
The Earth Summit
35%
The Worldโs Summit
23%
The Montreal Protocol
9%
None of the above
Irrigation without proper drainage of water leads to
Anonymous Quiz
12%
Choking of drains
31%
Solidification of water
20%
Waterlogging in the soil
37%
All of the above
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This process of evolution of different species in a given geographical area starting from a point and literally radiating to other areas of geography is
Anonymous Quiz
9%
Saltation
30%
Mutation
48%
Adaptive radiation
13%
Branching descent
โค1
Evolution of different species in one area from a single ancestor and spreading to other areas is called:
Anonymous Quiz
7%
Saltation
27%
Mutation
53%
Adaptive radiation
12%
Branching descent
Which statements are correct?
(1) Darwinโs theory = natural selection
(2) Branching descent + natural selection = key concepts
(1) Darwinโs theory = natural selection
(2) Branching descent + natural selection = key concepts
Anonymous Quiz
20%
(1) only
26%
(2) only
51%
(1) and (2)
3%
None
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Whose work on population influenced Darwinโs theory?
Anonymous Quiz
30%
Lamarck
43%
Thomas Malthus
24%
Ernst Heckel
3%
Karl von Baer
Who proposed the concept of saltation (sudden large mutation)?
Anonymous Quiz
33%
de Vries
40%
Miller
15%
Urey
11%
Haldane
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โค2
Allele frequencies stay constant across generations under which principle?
Anonymous Quiz
15%
Allenโs rule
60%
Hardy-Weinbergโs principle
19%
Darwinโs theory
7%
Biogenesis
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Hugo de Vries studied which plant to propose mutation theory?
Anonymous Quiz
18%
Dandelion
30%
Eicchornia
35%
Evening primrose
17%
Snapdragon
Darwinโs theory is based on branching descent and natural selection. Are both factual?
Anonymous Quiz
36%
Both correct
21%
Both incorrect
32%
I correct, II incorrect
11%
I incorrect, II correct
Disturbance in Hardy-Weinberg equilibrium results in:
Anonymous Quiz
11%
Reproduction
57%
Evolution
20%
Immigration
12%
Emigration
โค3
Gene flow occurs when gene migration happens:
Anonymous Quiz
16%
Once
43%
Twice
14%
Thrice
28%
Multiple times
What represents the best method for producing salicylic acid?
Anonymous Quiz
22%
Benzoic acid, strong base, high temperature
31%
Toluene, strong base, high temperature
37%
Phenol, base carbon dioxide then acid
10%
Bromobenzene, carbonic acid, high temperature
Which of the following acids dissociates to the greatest extent in the aqueous solution?
Anonymous Quiz
24%
Trichloroacetic acid
44%
Acetic acid
23%
Chloroacetic acid
9%
Dichloroacetic acid
โค2