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Q. No.Which of the following is not a basic point about Oparin-Haldane hypothesis?
1. Early earth had a chemically oxidising atmosphere.
2. This atmosphere, exposed to energy in various forms, produced simple organic compounds ("monomers").
3. These compounds accumulated in a "soup", which may have been concentrated at various locations (shorelines, oceanic vents etc.).
4. By further transformation, more complex organic polymers – and ultimately life – developed in the soup.
Subtopic: Examples of Chemical Evolution |
79%
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The statement “All the acquisitions or losses wrought by nature on individuals, through the influence of the environment in which their race has long been placed, and hence through the influence of the predominant use or permanent disuse of any organ; all these are preserved by reproduction to the new individuals which arise, provided that the acquired modifications are common to both sexes, or at least to the individuals which produce the young” can be ascribed to:
1. Georges Cuvier
2. Lamarck
3. A R Wallace
4. Charles Darwin
1. Georges Cuvier
2. Lamarck
3. A R Wallace
4. Charles Darwin
Subtopic: Theory of Evolution & Lamarckism |
79%
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The basic tenets of evolution by natural selection as defined by Darwin do not include:
1. More individuals are produced each generation than can survive.
2. Phenotypic variation exists among individuals and the variation is heritable.
3. Those individuals with heritable traits better suited to the environment will survive.
4. The evolutionarily significant variations in the population arise due to mutations.
1. More individuals are produced each generation than can survive.
2. Phenotypic variation exists among individuals and the variation is heritable.
3. Those individuals with heritable traits better suited to the environment will survive.
4. The evolutionarily significant variations in the population arise due to mutations.
Subtopic: Darwin's Theory |
56%
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Consider the two statements:
I. Birds and bats have homologous limbs.
II. They are both ultimately derived from terrestrial tetrapods.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is incorrect but II is correct
4. I is correct but II is incorrect
I. Birds and bats have homologous limbs.
II. They are both ultimately derived from terrestrial tetrapods.
1. Both I and II are correct and II explains I
2. Both I and II are correct but II does not explain I
3. I is incorrect but II is correct
4. I is correct but II is incorrect
Subtopic: Concept of Organic Evolution: Evidence |
53%
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Examples of convergent evolution will include:
I. Opposable thumbs in primates and giant pandas.
II. Eye of cephalopods and vertebrates.
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
I. Opposable thumbs in primates and giant pandas.
II. Eye of cephalopods and vertebrates.
1. Only I
2. Only II
3. Both I and II
4. Neither I nor II
Subtopic: Definition & Types of Evolution |
58%
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The statement “Embryos pass through successive stages that represent the adult forms of less complex organisms in the course of development” can be equated with:
| 1. | Recapitulation theory | 2. | Baer’s law |
| 3. | Descent with modification | 4. | Punctuated equilibrium |
Subtopic: Embryological Evidence of Evolution |
61%
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Sequence comparisons indicate that the DNA of which of the following living apes is most similar to human DNA?
1. Hoolock Gibbon
2. Orangutan
3. Gorilla
4. Chimpanzee
1. Hoolock Gibbon
2. Orangutan
3. Gorilla
4. Chimpanzee
Subtopic: Evolution of Homo Sapiens |
77%
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With the passing of stringent laws and pollution control measures in Britain, there has been a decline in the frequency of melanic form of the Peppered moth. The most likely cause for this observation will be:
1. industrial pollutants turned the moths black
2. the selection pressure on the melanic and the non-melanic forms has reversed
3. genetic drift
4. assortative mating
1. industrial pollutants turned the moths black
2. the selection pressure on the melanic and the non-melanic forms has reversed
3. genetic drift
4. assortative mating
Subtopic: Concept of Organic Evolution: Evidence |
72%
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Modern Homo sapiens arose:
1. 75000-10000 years ago
2. 100000-40000 years ago
3. 1.5 mya
4. 3-4 mya
1. 75000-10000 years ago
2. 100000-40000 years ago
3. 1.5 mya
4. 3-4 mya
Subtopic: Evolution of Homo Sapiens |
77%
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Darwin finches and Australian marsupials are excellent examples of:
1. Saltation
2. Catastrophism
3. Adaptive radiation
4. Anthropogenic artificial selection
1. Saltation
2. Catastrophism
3. Adaptive radiation
4. Anthropogenic artificial selection
Subtopic: Concept of Organic Evolution: Evidence |
94%
From NCERT
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