Which of the following is a vestigial organ in humans?

Which of the following is $NOT$ a vestigial organ in $Homo$ $sapiens$?

Identify the examples of Convergent Evolution and Divergent Evolution from the following list:
$I -$ Sweet potato (root) and Potato (stem)
$II -$ Forelimbs of Whale,Bat,Cheetah,and Human
$III -$ Thorn of Bougainvillea and Tendril of Cucurbita
$IV -$ Flippers of Penguins and Dolphins
$V -$ Wings of Butterfly and Wings of Bird
$VI -$ Eye of Octopus and Mammals
Select the correct sequence for Convergent Evolution and Divergent Evolution.

In humans,the nictitating membrane is a/an....

The study of fossils is called:

What does the presence of gills in a tadpole of a frog indicate?