Which of the following physical traits are found in poisonous snakes in Tennessee?

Poisonous snakes in Tennessee, particularly the pit vipers such as copperheads and timber rattlesnakes, exhibit specific physical traits that help differentiate them from non-venomous species. One of the defining characteristics is their elliptical (or cat-shaped) pupils, which are a key identification feature. Additionally, these snakes possess a distinctive pit organ located between their nostril and eye, which allows them to detect heat from warm-blooded prey.

These adaptations help them hunt more effectively in their environment. The elliptical pupils aid in depth perception, while the heat detection capability provided by the pit organ allows them to sense prey that is often concealed. This combination of features is a reliable indicator of a venomous snake and is particularly significant in Tennessee's ecosystem.

The other options, while they may describe traits found in snakes, do not accurately represent the key features that identify poisonous species in Tennessee.