Question

Distinguish between the following:

Hibernation and Aestivation

Distinguish between hibernation and aestivation.

Answer 1

Sr. No.	Hibernation	Aestivation
1.	It is also called winter sleep.	It is also called summer sleep.
2.	It is a state of reduced activity in some organisms to escape cold winter conditions.	It is a state of reduced activity in some organisms to escape desiccation due to heat in summer.
3.	Animals rest in warm places.	Animals rest in cool, shady, and moist places.
4.	It is shown by bears inhabiting cold regions.	It is shown by some fish and snails.

Answer 2

1. Hibernation is a state of dormancy during the winter, usually seen in cold-blooded (ectothermic) animals like frogs and some warm-blooded animals such as polar bears, to escape extreme cold. Animals show minimum physiological activity during hibernation.
2. In contrast, aestivation is a state of inactivity used to survive summer conditions such as heat and dryness. Animals such as fish, snails, and frogs enter aestivation in cool, shady, and moist places. Some desert animals, such as ground squirrels, become torpid during hot parts of the day to avoid heat and desiccation.