UPSC Critical Reading

A bat's wings may look like sheets of skin. But underneath, a bat has the same five fingers as an orangutan or a human, as well as a wrist connected to the same cluster of wrist bones connected to the same long bones of the arm. What can be more curious than that the hand of a man, formed for grasping, that of a mole for digging, the leg of the horse, the-paddle of the porpoise, and the wing of the bat, should all be constructed on the some pattern?

Which one of the following is the most logical, scientific and rational inference that can be made from the above passage?

  1. Different species having similar structure of hands is an example of biodiversity.
  2. Limbs being used by different species for different kinds of work is an example of biodiversity.
  3. Man and the aforementioned animals having similar structure of limbs is an example of coincidence in evolution.
  4. Man and the aforementioned animals have a shared evolutionary history.


In the passage, writer has compared various organic similarities between man and other animals.

The correct option is D.