9. Distinguish between the following:
(a) Hibernation and Aestivation
The differences between hibernation and aestivation are as follows
| Hibernation | Aestivation |
| A state of reduction in activity in some organisms to escape winters. |
A state of reduction in activity in some organisms to escape extreme summers. |
|
Animals prefer a warm place to sleep. |
Animals look for a more moist, cool and shady place to sleep. |
| It does not alter internal body conditions due to low temperatures. |
It retains water in the body and prevents internal body damage due to high temperatures. |
| E.g. Bears and squirrels | E.g. Fishes and snails |