11.Organisms and Populations
hard

Distinguish between the following:

$(a)$ Hibernation and Aestivation

$(b)$ Ectotherms and Endotherms

Option A
Option B
Option C
Option D

Solution

$(a)$ Hibernation and Aestivation 

  Hibernation   Aestivatio
$1.$ 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. 
Standard 12
Biology

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