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Complete the following diagram :[Diagram: ‘Evidences of Evolution’ in the centre with four boxes joined to it — ‘Anatomical’ is written in one box, the other three are blank.]

Q.3 (i) Complete the following diagram :

[Diagram: ‘Evidences of Evolution’ in the centre with four boxes joined to it — ‘Anatomical’ is written in one box, the other three are blank.]

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Answer: The other three evidences of evolution are: Palaeontological evidences (fossils), Embryological evidences and Vestigial organs.

(Any three of the textbook evidences other than anatomical are accepted: morphological evidences, vestigial organs, palaeontological evidences, connecting links, embryological evidences.)

  • Anatomical: similarity in structure of organs, e.g. forelimbs of man, whale and bat.
  • Palaeontological: fossils show organisms of the past and the order of their appearance, e.g. Archaeopteryx.
  • Embryological: early embryos of fish, salamander, tortoise, chicken, pig, cow, rabbit and man are very similar.
  • Vestigial organs: useless, degenerated organs in man such as the appendix, coccyx, wisdom teeth and ear muscles, which are functional in other animals.

Connecting links (e.g. Peripatus, duck-billed platypus, lungfish) are a separate evidence of evolution.

Doubtly AI · 25 Oct 2026 AI-verified · Oct 2026 Report
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