Mesozoic era is associated with mass extinction of ______.
2.
Serial homology is exhibited by ______.
3.
Vermiform appendix in man, nictitating membrane and wisdom teeth are ______.
4.
Which one of the following terms would most correctly describe the relationship between the flight organs of animals like locust, bat, swallow, and flying fish ?
5.
Appearance of facial hair in some people is an example of
