Question

Distinguish between the following:
(a) Hibernation and Aestivation.
(b) Ectotherms and Endotherms

Answer 1

(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.