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Q. No.The phenomenon of the evolution of different species in a given geographical area starting from a point and spreading to other habitats is called:
1.
Saltation
2.
Co-evolution
3.
Natural selection
4.
Adaptive radiation
Subtopic: Concept of Organic Evolution: Evidence: 2 |
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In a population in genetic equilibrium, the frequency of the recessive allele is found to be 0.2. What is the frequency of heterozygotes in this population?
| 1. | 0.8 | 2. | 0.16 |
| 3. | 0.32 | 4. | 0.64 |
Subtopic: Hardy Weinberg Law: 1 |
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When a new population is established by a very small number of individuals from a larger population, sometimes becoming a different species, the process is called as:
| 1. | Founder effect | 2. | Genetic bottleneck |
| 3. | Adaptive radiation | 4. | Convergent evolution |
Subtopic: Hardy Weinberg Law: 1 |
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The process of evolution of different species in a given geographical area starting from a point and literally radiating to other areas of geography [habitats] is known as:
| 1. | Convergent evolution | 2. | Divergent evolution |
| 3. | Adaptive radiation | 4. | Artificial selection |
Subtopic: Natural Selection |
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All the following are examples of evolution by anthropogenic action except:
| 1. | Industrial melanism seen in peppered moth |
| 2. | Pesticide resistance in pests |
| 3. | Emergence of antibiotic resistant bacteria |
| 4. | Streamlined body in dolphins |
Subtopic: Palentological Evidences of Evolution |
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Similar biological structures or sequences in different taxa are homologous if they:
| 1. | always perform the same function |
| 2. | result from convergent evolution |
| 3. | do not serve any known function |
| 4. | are derived from a common ancestor |
Subtopic: Embryological Evidence of Evolution |
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The natural selection operating as shown in the given figure is called as:
| 1. | Disruptive |  |
| 2. | Directional | |
| 3. | Stabilizing | |
| 4. | Retrogressive |
Subtopic: Natural Selection |
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The biological relationship of the bones in the forelimbs of mammals is an argument in favour of evolution. What will be true for the forelimbs of the different mammals shown below?
| Statement I: | They evolved in a similar environment, rather than inherited from a recent common ancestor. |
| Statement II: | They have a common descent and have evolved from a shared ancestor. |
| 1. | Statement I is correct; Statement II is incorrect |
| 2. | Statement I is correct; Statement II is correct |
| 3. | Statement I is incorrect; Statement II is correct |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Concept of Organic Evolution: Evidence |
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The given figure shows the adaptive radiation of marsupials of Australia. What is correct regarding adaptive radiation?
| I: | It is the process of evolution of different species in a given geographical area starting from a point and literally radiating to other areas of geography (habitats). |
| II: | When more than one adaptive radiation appeared to have occurred in an isolated geographical area (representing different habitats), one can call this divergent evolution. |
| 1. | Only I | 2. | Only II |
| 3. | Both I and II | 4. | Neither I nor II |
Subtopic: Darwin's Theory |
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Subtopic: A BRIEF ACCOUNT OF EVOLUTION |
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