Organisms Maintain Dynamic Homeostasis Through Behavioural and Physiological Mechanisms

Multiple Choice

Organisms maintain dynamic homeostasis through behavioural and physiological mechanisms. Which of the following statements is an accurate explanation of a negative feedback mechanism used by animals to regulate body temperature?

A) Possums are able to cool themselves during warmer months by producing more brown fat, which contains abundant mitochondria and a rich blood supply.
B) Desert jackrabbits have unusually large ears that serve as solar heat collectors to enable them to maintain their body temperatures.
C) A ground squirrel's hypothalamus detects changes in environmental temperatures and responds by activating or suppressing metabolic heat production.
D) A goldfish slows its movements when the water temperature is lower.