A.
(a) Hibernation:-
(i)Hibernation is a state of reduced activity in some organisms to escape cold winter conditions.
(ii)Bears and squirrels inhabiting cold regions are examples of animals that hibernate during winters.
Aestivation:-
(i) Aestivation is a state of reduced activity in some organisms to escape desiccation due to heat in summers.
(ii) Fishes and snails are examples of organisms aestivating during summers,
B.
(a.)Ectotherm:-
(i)Ectotherm are cold blooded animals, their temperature varies with their surrounding
(ii)Fishes, amphibians and reptiles are ectothermic animals.
(b.)Endotherm:-
(i)Endotherms are warm blooded animals. They maintain a constant body temperature. Birds and mammals are endothermic animals.
(ii)Birds and mammals are endothermic animals.