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Hibernation Phenomenon Quiz

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Questions and Answers

What is the primary characteristic of hibernation?

Increased activity and metabolic rate

Consistent body temperature throughout the year

Minimal activity and metabolic depression (correct)

Increased food consumption

What is the difference between obligate and facultative hibernation?

Obligate hibernators have a longer hibernation period, while facultative hibernators have a shorter hibernation period.

Obligate hibernators are found in tropical regions, while facultative hibernators are found in temperate regions.

Obligate hibernators have a higher metabolic rate, while facultative hibernators have a lower metabolic rate.

Obligate hibernators enter hibernation spontaneously and annually, while facultative hibernators only enter hibernation when stressed or food-deprived. (correct)

How do hibernating animals avoid muscle atrophy and dehydration?

They recycle their proteins and urine, and metabolize fat to stay hydrated. (correct)

They rely on their stored energy reserves and do not need to consume any food or water during hibernation.

They enter a state of complete inactivity, which prevents muscle atrophy and dehydration.

They increase their food intake and water consumption during hibernation.

Why was the discovery of hibernation in the fat-tailed dwarf lemur of Madagascar significant?

It was the first time a primate was known to hibernate. Signup and view all the answers

What is the primary reason why hibernating animals do not eat or drink while hibernating?

They rely on their stored fat reserves to meet their energy and hydration needs during hibernation. Signup and view all the answers

What is the significance of Malagasy winter temperatures sometimes rising above 30°C (86°F) for the hibernation of the fat-tailed dwarf lemur?

It shows that hibernation is not exclusively an adaptation to low ambient temperatures. Signup and view all the answers

Study Notes

Hibernation Characteristics

Hibernation is a state of minimal activity and metabolic depression
Characterized by low body temperature, slow breathing, and heart rate, and low metabolic rate

Types of Hibernation

Obligate hibernation: occurs spontaneously and annually, regardless of ambient temperature and access to food
Facultative hibernation: occurs only when cold-stressed, food-deprived, or both

Hibernation in Primates

Until recently, no primate or tropical mammal was known to hibernate
Fat-tailed dwarf lemur of Madagascar hibernates in tree holes for seven months of the year
Hibernation not exclusively an adaptation to low ambient temperatures, as Malagasy winter temperatures can rise to over 30 °C (86 °F)

Hibernation Adaptations

Recycling of proteins and urine allows hibernators to stop urinating for months and avoid muscle atrophy
Metabolic fat produced in sufficient quantities to satisfy water needs
Hibernators do not eat or drink while hibernating, but live off stored fat

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Description

Test your knowledge on the phenomenon of hibernation, a state of minimal activity and metabolic depression often occurring during winter months. Learn about the characteristics of hibernation, such as low body temperature, slow breathing, and low metabolic rate.