Consider the following:

1. Bats
2. Bears
3. Rodents

The phenomenon of hibernation can be observed in which of the above kinds of animals?

1. 1 and 2 only
2. 2 only
3. 1, 2 and 3
4. Hibernation cannot be observed in any of the above

Explanation

All animals are correct

• Hibernation is a state of reduced metabolic activity in animals that allows them to conserve energy and survive during periods of extreme cold or reduced food availability. During hibernation, an animal’s body temperature drops, heart rate slows down, and breathing becomes shallow.
• Bats: Many species of bats hibernate during the winter months when food (insects) is scarce. They seek out caves or similar sheltered locations for this purpose.
• Bears: While bears undergo a form of deep sleep called torpor, it is often classified as hibernation in broader terms. Their metabolic rate and body temperature drop, allowing them to conserve energy during winter.
• Rodents: Several rodents, such as ground squirrels and hamsters, are well-known hibernators. They enter a state of hibernation to survive harsh winter conditions.

Answer: (c) 1, 2 and 3; Difficulty Level: Easy