Question 10
Distinguish between the following:
(a) Hibernation and Aestivation
(b) Ectotherms and Endotherms
(a) Hibernation and Aestivation
| Hibernation |
| Aestivation |
1. | Hibernation is a state of reduced activity in some organisms to escape cold winter conditions. | 1. | Aestivation is a state of reduced activity in some organisms to escape desiccation due to heat in summers. |
2. | Bears and squirrels inhabiting cold regions are examples of animals that hibernate during winters. | 2. | Fishes and snails are examples of organisms aestivating during summers. |
(b) Ectotherms and Endotherms
| Ectotherms |
| Endotherms |
1. | Ectotherms are cold blooded animals. Their temperature varies with their surroundings. | 1. | Endotherms are warm blooded animals. They maintain a constant body temperature. |
2. | Fishes, amphibians, and reptiles are ectothermal animals. | 2 | Birds and mammals are endothermal animals. |
