What is the hallmark trait of aquatic organisms that survived the Permian extinction?
A)They lived in shallow seas.
B)They were exceptionally small.
C)None of them inhabited reefs.
D)They were able to withstand anoxic conditions.
E)All of the above

Question

Quizplus · Accepted Answer

The hallmark trait of aquatic organisms that survived the Permian extinction was their ability to withstand anoxic conditions, or low levels of oxygen in the water. This was likely due to adaptations such as anaerobic respiration or the ability to survive for extended periods of time without oxygen. The other answer choices are not necessarily characteristic of all aquatic organisms that survived the extinction, and therefore are not the best choice.

What Is the Hallmark Trait of Aquatic Organisms That Survived