Question Detail

BIO 101 BIO 101 Past Questions Objective Question

Question

The largest mass extinction in history which wiped out 90% of all marine lives & 70% of land animals took place in the ___________ era
Options
A Precambrian
B Paleozoic
Correct Answer
C Mesozoic
D Cenozoic
Correct Answer

Option B is the correct answer.

Detailed Explanation

The largest mass extinction event in Earth's history occurred at the end of the Permian period, which is the final period of the Paleozoic era. This 'Great Dying' wiped out an estimated 90-96% of marine species and 70% of terrestrial vertebrate species.

Hint

Which era ended with the most catastrophic mass extinction, paving the way for the dinosaurs?

Question Info