Fossils are

$A$: Similarities in proteins and genes performing a given function among diverse organisms give clues to common ancestry.
$R$: All groups of vertebrates arise from a common ancestor with great adaptation capability.

$A$ complete fossil of which of the following has been found?

Which of the following organs is vestigial in humans?

The eye of an octopus and the eye of a cat show different patterns of structure,yet they perform similar functions. This is an example of:

Which of the following are the correct pair of homologous organs?
$I.$ Hands of man and wings of bat
$II.$ Wings of bat and wings of cockroach
$III.$ Wings of bird and wings of butterfly
$IV.$ Fins of fish and forelimbs of horse
$V.$ Forearm of human and forelimbs of horse
The correct combination is visible in option