The process by which biological systems maintain stability while adjusting to conditions that are optimal for survival.

The process by which biological systems maintain stability while adjusting to conditions that are optimal for survival.

• A. Homeostasis
• B. Adaptation
• C. Equilibrium
• D. Homeothermy

Answer: (A)

Maintaining a stable internal environment while responding to changing external conditions is homeostasis. The body uses sensors to detect deviations from optimal ranges and effectors to bring those variables back toward their set points, often through negative feedback. This dynamic regulation keeps critical factors like temperature, pH, and glucose within narrow limits, which supports survival even as the outside environment shifts. Adaptation refers to genetic changes over generations, not immediate regulation. Equilibrium describes a passive balance in nonliving systems or in isolated contexts without active regulation. Homeothermy is about keeping body temperature constant and is a specific trait, not the general process that governs many physiological variables. So the process described is homeostasis.

Maintaining a stable internal environment while responding to changing external conditions is homeostasis. The body uses sensors to detect deviations from optimal ranges and effectors to bring those variables back toward their set points, often through negative feedback. This dynamic regulation keeps critical factors like temperature, pH, and glucose within narrow limits, which supports survival even as the outside environment shifts. Adaptation refers to genetic changes over generations, not immediate regulation. Equilibrium describes a passive balance in nonliving systems or in isolated contexts without active regulation. Homeothermy is about keeping body temperature constant and is a specific trait, not the general process that governs many physiological variables. So the process described is homeostasis.