(a) Hibernation and Aestivation
| Hibernation |
Aestivation |
| Hibernation is a state of reduced activity in some organisms to escape cold winter conditions |
Aestivation is a state of reduced activity in some organisms to escape desiccation due |
| Bears and squirrels inhabiting cold regions are examples of animals that hibernate during winters |
Fishes and snails are examples of organisms aestivating during summers. |
(b) Ectotherms and Endotherms
| Ectotherms |
Endotherms |
| Ectotherms are cold blooded animals. Their temperature varies with their surroundings. |
Endotherms are warm blooded animals. They maintain a constant body temperature. |
|
Fishes, amphibians, and reptiles are ectothermal animals. | |
Birds and mammals are endothermal animals |
