In the diagram, which of the animals represents the oldest creatures in terms of evolutionary history?

  • A iii
  • B ii
  • C i
  • D iv
jamb 2010biology

The correct answer is D. iv

Embryos of vertebrates can be used to show evolutionary trend:

- Fishes  â†’ Amphibians  â†’ Reptiles  â†’ Birds  â†’ Mammals

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