What characteristic of Class Reptilia dictates that H. nasicus must bask in the sun to become active?

Answer

Being ectothermic

The placement within the Class Reptilia immediately identifies the Western Hognose Snake as being ectothermic. Ectothermy means that the organism cannot internally generate sufficient metabolic heat to maintain a stable, high body temperature necessary for peak activity. Consequently, *H. nasicus* must rely entirely on external environmental sources, such as basking in direct sunlight, to raise its internal temperature. This elevation in temperature is vital not only for achieving enough energy to actively hunt but also for fundamental physiological processes like efficient digestion of consumed prey items.

What characteristic of Class Reptilia dictates that H. nasicus must bask in the sun to become active?
taxonomyanimalclassificationreptilesnake