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Organisms and Populations — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYOrganisms and Populations3 Marks
Question
  1. "Organisms may be conformers or regulators." Explain this statement and give one example of each.
  2. Why are there more conformers than regulators in the animal world?
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Answer

  1.  
  • Conformers- organisms which cannot maintain a constant internal environment under varying external environmental conditions change body temperature and osmotic concentration with change in external environment eg. all plants/fishes/amphibians/reptiles.
  • Regulators- organisms which can maintain homeostasis (by physiological means or behavioural means) maintain constant body temperature and osmotic concentration eg. birds/mammals.
  1. Thermoregulation is energetically expensive for animals.

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