alleryThe similar bone and joint structure in the human hand, whale flipper and bat patagium is taken as which evidence of evolution?
- Morphological evidence
- Embryological evidence
- Anatomical evidence
- Palaeontological evidence
Show answer and solution
Correct answer: C. Anatomical evidence
1. The human hand, ox foreleg, whale flipper and bat patagium look very different on the surface.
2. Each is also used for a different purpose in its animal.
3. Yet their internal bones and joints follow a similar arrangement.
4. Internal structural similarity points to a common ancestor.
5. Such internal evidence is classed as anatomical evidence.
6. Trap (morphological): that concerns external form similarity, but here the surface forms differ.
7. Trap (embryological): that uses embryo stages, not adult bone structure.
8. Trap (palaeontological): that uses fossils, which are not involved in this comparison.
9. So the correct category is anatomical evidence.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 1 "Heredity and Evolution", p.13_