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Organisms and Populations — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYOrganisms and Populations3 Marks
Question
  1. State how the constant internal environment is beneficial to organisms
  2. Explain any two alternatives by which organisms can overcome stressful external conditions.
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Answer

  1. Permits all biochemical reactions to proceeds with maximal efficiency, enhances fitness of species.
  2.  
  1. Regulation, Maintaining internal environment by maintaining constant body temperature/osmotic concentration.
  2. Suspend (conform), By suspending metabolic activities through hibernation/aestivation/diapause.
  3. Migration, Organisms migrate temporarily to more hospitable areas.

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