Question
Distinguish between Ectotherms and Endotherms.

Answer

EctothermsEndotherms
1. Ectotherms do not have ability to generate heat in the body.1. Endotherms possess the ability to generate their own body heat.
2. Ectotherms depend on the environmental sources to heat their bodies. E.g sunlight.2. Endotherms do not depend upon outside sources to generate heat.
3. Most ectotherms are confined to warmer parts of the world.3. Endotherms inhabit coldest parts of the earth.
4. Body temperature of ectotherms fluctuate according to ambient temperature.4. Body temperatures of endotherms remain constant and do not show fluctuations as per ambient temperatures.
5. Metabolic rate of ectotherms is low.E.g. Amphibians and reptiles.5. Metabolic rate of endotherms is high.E.g. Mammals and birds

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