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  • Explain with the help of an example each, any two ways by which the animals cope with the stressful conditions lasting for a short period in their habitat.      

Explain with the help of an example each, any two ways by which the animals cope with the stressful conditions lasting for a short period in their habitat.

 

 

 

 
 
 
 
 

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Ways by which the animals cope up with the stressful conditions lasting for a short period of time in their habitat-

MIGRATION- The organism can move away temporarily from the stressful habitat to a more hospitable area and return when stressful period is over. Many animals, particularly birds, during winter undertake long-distance migrations to more hospitable areas. Every winter the famous Keolado National Park (Bhartpur) in Rajasthan host thousands of migratory birds coming from Siberia and other extremely cold northern regions.


SUSPENSION- The organism’s cellular activity reduces and it goes into a state of dormancy. Example- In bacteria, fungi, and lower plants, various kinds of thick-walled spores are formed which help them to survive unfavorable conditions – these germinate on availability of suitable environment. In animals, the organism, if unable to migrate, might avoid the stress by escaping in time. Like bears going into hibernation during winter is an example of escape in time. Some snails and fish go into aestivation to avoid summer-related problems-heat and desiccation. Under unfavorable conditions many zooplankton species in lakes and ponds are known to enter diapause, a stage of suspended development.

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Priyanka Kumari

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