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प्रश्न
Differentiate between the following:
Paleontological and Biogeographical evidence
फरक स्पष्ट करा
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उत्तर
| Basis of Difference | Palaeontological evidence | Biogeographical evidence |
|---|---|---|
| What is studied | Fossils and their positions in rock layers | Geographic distribution of organisms |
| Main evidence | Preserved remains, impressions and traces | Similarities and differences among populations in different regions |
| What it can show | Extinction, transitional forms and change through time | Effects of isolation, dispersal and geographic history |
| Common example | Archaeopteryx as a fossil with bird and reptile features | Darwin’s Galápagos finches and their beak adaptations |
| Evolutionary value | Helps reconstruct evolutionary sequences | Helps explain independent adaptation and formation of distinct species |
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