SELECT * FROM question_mgmt as q WHERE id=494 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=3 AND subId=7 AND chapterId=38 and ex_no='1' AND status=1 ORDER BY CAST(question_no AS UNSIGNED)

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

Answer:

(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.

 


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