Fossil $X$ is older than fossil $Y$. The most evident answer is:

  • A
    Fossil $Y$ has got some of the vestigial organs which are functional in $X$
  • B
    Fossil $Y$ has got homologous and analogous organs of fossil $X$
  • C
    Fossil $X$ is found in deeper sedimentation than $Y$
  • D
    Fossil $Y$ was found in a better state than that of $X$

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Comparative $........$ and $............$ show similarities and differences between organisms existing in the present and those that existed in the past.

Select the appropriate option for the work done by $Ernst$ $Haeckel$.

Which of the following groups in human anatomy consists only of vestigial organs?

Which of the following examples show divergent evolution?

Organs that have different embryonic origin but perform similar functions are

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