AP BIOLOGY

EVOLUTION

PATTERNS OF EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A black bear hibernates during the winter months.
A
Behavioral Adaptation
B
Structural Adaptation
Explanation: 

Detailed explanation-1: -In order to save energy, brown bears hibernate through the long, cold arctic winter. Hibernating is a behavioral adaptation that allows the bear to snooze through the harshest part of the year when the temperatures are low and food is hard to find.

Detailed explanation-2: -Although black bears are shy and not very aggressive, they can become very aggressive if they or their cubs are threatened. Their greatest physical and behavioral adaptations help them eat plenty of food to be able to hibernate, have cubs, and survive in most environments.

Detailed explanation-3: -Hibernation is a physiological and behavioural adaptation whose function is to maximize energy efficiency in animals remaining in the same area the whole year round. It is an alternative to the provision of sufficient insulation to remain warm, forage continuously and sustain a constant high metabolic rate.

Detailed explanation-4: -Understanding Bears For the black bear, hibernation is more an adaptation for escaping winter food scarcity than an adaptation for escaping winter cold. Most dens are nearly as cold as the surrounding countryside. Dens may be burrows, caves, hollow trees, or simply nests on the ground.

Detailed explanation-5: -Answer and Explanation: Polar bears behavioral adaptations include their hibernation habits, aggressive behaviors, and communication efforts. Bears often hibernate during frigid periods when food might be scarce. Polar bears, however, have adapted their hibernation habits.

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