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Q. No.Adaptive radiation refers to:
| 1. | The gradual loss of species as they fail to adapt to new environmental conditions. |
| 2. | The process where organisms evolve from a common ancestor to fill a variety of different niches. |
| 3. | The radiation from the sun leading to mutations and hence the evolution of new species. |
| 4. | The spread of a single species into different forms that inhibit different niches. |
Subtopic: Additional Theories of Darwin |
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How many of the given statements regarding gradual evolution of life forms as explained by Darwin are correct?
1. 1
2. 2
3. 3
4. 4
| I: | Any population has built in variation in characteristics. |
| II: | Those characteristics which enable some to survive better in natural conditions (climate, food, physical factors, etc.) would outbreed others that are less-endowed to survive under such natural conditions. |
| III: | The fitness, according to Darwin, refers ultimately and only to reproductive fitness. |
| IV: | Those who are better fit in an environment, leave more progeny than others. |
1. 1
2. 2
3. 3
4. 4
Subtopic: Additional Theories of Darwin |
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Q. No.
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