Which of the following does not describe the physiology of poultry?

The physiology of poultry is characterized by several distinct features that help define their biological functions and anatomy. Notably, poultry possess a feathered body which provides insulation, protection, and aids in flight for some species. They are bipedal, meaning they walk on two legs, a significant trait that supports their mobility and foraging behaviors. Poultry are also warm-blooded, or endothermic, allowing them to regulate their body temperature internally, which is essential for their survival in varying environmental conditions.

In contrast, the physiological structure of poultry includes a four-chambered heart, not a two-chambered one. This four-chambered cardiac system efficiently separates oxygenated and deoxygenated blood, supporting the higher metabolic rates of warm-blooded animals. A two-chambered heart is typically found in fish and some other less advanced animals, where it is not suited to the physiological demands of birds. Thus, the statement regarding a two-chambered heart does not accurately describe poultry physiology.