Q. No.
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| Convergent evolution | Divergent evolution | |
| 1. | Bones of forelimbs of vertebrates | Wings of butterflies and birds |
| 2. | Thorn of Bougainvillea and tendrils of Cucurbita | Eye of Octopus and mammals |
| 3. | Eye of Octopus and mammals | Bones of forelimbs of vertebrates |
| 4. | Thorns of Bougainvillea and tendrils of Cucurbita | Wings of butterflies and birds |
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Evolution of different species in a given area starting from a point and spreading to other geographical areas is known as
1. Migration
2. Divergent evolution
3. Adaptive radiation
4. Natural selection
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What is the most significant trend in the evolution of modern man (Homo sapiens) from the ancestors?
1. Increasing cranial capacity
2. Upright posture
3. Shortening of jaws
4. Binocular vision
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The idea of mutation was brought forth by:
| 1. | Hardy Weinberg, who worked on allele frequencies in a population. |
| 2. | Charles Darwin, who observed a wide variety of organisms during the sea voyage. |
| 3. | Hugo do Vries, who worked on evening primrose. |
| 4. | Gregor Mendel, who worked on PisumSativum. |
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The process by which organisms with different evolutionary histories evolve similar phenotypic adaptations in response to a common environmental challenge is called:
| 1. | Natural selection | 2. | Convergent evolution |
| 3. | Non-random evolution | 4. | Adaptive radiation |
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The eye of an octopus and the eye of a cat show different patterns of structure, yet they perform similar functions. This is an example of:
| 1. | Homologous organs that have evolved due to convergent evolution. |
| 2. | Homologous organs that have evolved due to divergent evolution. |
| 3. | Analogous organs that have evolved due to convergent evolution. |
| 4. | Analogous organs that have evolved due to divergent evolution. |
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Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as
1. Genetic flow
2. Genetic drift
3. Random mating
4. Genetic load
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The tendency of population to remain in genetic equilibrium may be disturbed by
1. Random mating
2. Lack of migration
3. Lack of mutations
4. Lack of random mating
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Forelimbs of cat, lizard used in walking; forelimbs of whale used in swimming and forelimbs of bats used in flying are an example of
1. Analogous organs
2. Adaptive radiation
3. Homologous organs
4. Convergent evolution
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