Ectotherms vs endotherms

Question 1

Give two differences between ectotherms and endotherms

Answer 1

Ectotherms (e.g reptiles, insects): Body temp varies with the environment; use behaviour to regulate temp
Endotherms (e.g mammals, birds): Maintain constant body temp using physiological mechanismsW

Question 2

Which group needs more food, ectotherms or endotherms

Answer 2

Endotherms - to fuel metabolic heat production