AP BIOLOGY

Detailed explanation-1: -Hibernation is a state of minimal activity and metabolic depression undergone by some animal species. Hibernation is a seasonal heterothermy characterized by low body-temperature, slow breathing and heart-rate, and low metabolic rate. It most commonly occurs during winter months.

Detailed explanation-2: -Despite what you may have heard, species that hibernate don’t “sleep” during the winter. Hibernation is an extended form of torpor, a state where metabolism is depressed to less than five percent of normal.

Detailed explanation-3: -Hibernation is the condition in which animals sleep for a long time during the winter season. They eat a lot during summer and go into a state of inactivity during which they don’t perform activities like eating or urinating. Animals like bears, bats and frogs undergo hibernation.

Detailed explanation-4: -So, the correct answer is ‘Hibernation’.

Detailed explanation-5: -Hibernation is a deep sleep that helps them to save energy and survive the winter without eating much. During hibernation the animal’s body temperature drops, and its heartbeat and its breathing slow down so that it does not use much energy.