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Q. No.How many options given in the box are not true for the Darwinian theory of evolution?
Directional variations, Saltation, Minor variations, Inheritance of ‘factors’, Heritable variations, Reproductive fitness
1. Four
2. Two
3. Three
4. Five
Subtopic: Sources of Variation: 2 |
61%
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In Lederberg's replica plating experiment, colonies of antibiotic resistant bacteria were observed, which indicates
| 1. | Pre-existing advantageous mutations when selected will result in observation of new phenotypes |
| 2. | Exposure to antibiotics causes mutation that confer antibiotic resistance |
| 3. | Mutations are directional variations |
| 4. | All antibiotic resistant bacteria which exist today are result of artificial selection |
Subtopic: Hardy Weinberg Law |
58%
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Dinosaurs dominated the World in which of the following geological era?
1. Coenozoic
2. Jurassic
3. Mesozoic
4. Devonion
1. Coenozoic
2. Jurassic
3. Mesozoic
4. Devonion
Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
From NCERT
NEET - 2013
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The finch species of Galapagos Islands are grouped according to their food sources. Which of the following is not a finch food?
1. Carrion
2. Insects
3. Tree buds
4. Seeds
1. Carrion
2. Insects
3. Tree buds
4. Seeds
Subtopic: Concept of Organic Evolution: Evidence |
66%
NEET - 2013
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Oparin of Russia and Haldane of England proposed that:
| I: | the first form of life could have come from pre-existing non-living organic molecules (e.g. RNA, protein, etc.) |
| II: | formation of life was preceded by chemical evolution, i.e., the formation of diverse organic molecules from inorganic constituents. |
| III: | The conditions on earth were – high temperature, volcanic storms, reducing atmosphere containing CH4, NH3, etc. |
| 1. | Only I and II are correct. |
| 2. | Only I and III are correct. |
| 3. | Only II and III are correct. |
| 4. | I, II and III are correct. |
Subtopic: Cosmic Evolution | Urey & Miller Experiment | Other Theories of Origin of Life |
78%
From NCERT
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Assertion (A): Big bang theory says that the universe is still expanding.
Reason (R): The expansion of the universe caused the decrease in temperature.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason (R): The expansion of the universe caused the decrease in temperature.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Cosmic Evolution |
54%
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Assertion (A): According to Darwin, fitness means reproductive fitness.
Reason (R): Those who are a better fit in the environment will leave more progenies.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason (R): Those who are a better fit in the environment will leave more progenies.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Darwin's Theory | Summary of Darwin's Theory | Modern Theory of Evolution |
88%
From NCERT
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| Assertion (A): | The new forms of life have arisen at different times in the history of the earth. |
| Reason (R): | Studies showed that life forms varied over time and certain life forms are restricted to certain geological timespans. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true, but (R) is not the correct explanation of (A). |
| 3. | (A) is true, but (R) is false. |
| 4. | (A) is false, but (R) is true. |
Subtopic: Concept of Organic Evolution: Evidence |
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| Assertion (A): | In convergent evolution, the same structure developed in animals along different directions due to adaptations to different needs. |
| Reason (R): | Homologous structures have similar anatomy but perform different functions. |
| 1. | Both (A) and (R) are true and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are true, but (R) is not the correct explanation of (A). |
| 3. | (A) is true, but (R) is false. |
| 4. | (A) is false, but (R) is true. |
Subtopic: Concept of Organic Evolution: Evidence |
66%
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Assertion (A): In polluted environments, melanic moths were more selected by nature.
Reason (R): Melanic moths were able to camouflage themselves during industrialization.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Reason (R): Melanic moths were able to camouflage themselves during industrialization.
1. Both (A) and (R) are true and (R) is the correct explanation of (A).
2. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
3. (A) is true, but (R) is false.
4. (A) is false, but (R) is true.
Subtopic: Concept of Isolation | Concept of Speciation | Genetic Basis of Adaptation |
89%
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