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Question : (a) Following are the responses of different animals to various abiotic factors .Describe each one with the help of an example: (i) Regulate ,(ii) Conform ,(iii) Migrate ,(iv) Suspend (b) If 8 individuals ina polulation of 80 butterflies die in a week calculate the death rate of polution of butterflies during that period |
Answer» Solution :(a) T(i) Regualte : some organisms are ableto maintain homeostatis by regulating their BODY temperature the mechanisms used by most mammals to regualte their body temperature are similar to what we humans use Example body temperature remains constant fat `37^(@)C` In summer when outside temperature is more thant oudbody temperatuewe swerat profusely and when the temperature is much lower than `37^(@)C`we shiverthus body temperature remains constant (ii) conform : May animals maintan a constant internal ENVIRONMENT therir body temperature changes with the eabbient temperature .Since small anilas have alrger surfacer ara relative to THERI volume they tend to lose body heatvery fast when stress ful p[eriod is over . (iv) Suspend : In a animals if migration is not possible they might avoid the stress by escappin in time Example (1) Bears go into hibernation during winter (2) Fishes go into aestvation to avoid summer related problems heat and DESSICATION (b) Death rate : number of deaths per 1000 individuals of a polution death rate =8//80=0.1 |
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