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Organisms and Populations — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYOrganisms and Populations4 Marks
Question
Distinguish between Hibernation and Aestivation.
✓

Answer

HibernationAestivation
1. Hibernation is winter sleep shown by some warm-blooded and some cold-blooded animals.1. Aestivation is the type of summer sleep, shown by cold-blooded animals.
2. It is for the whole winter.2. It is of short duration.
3. The animals look out for the warmer place to enter into hibernation.3. Animals search for the moist, shady and cool place to sleep.
4. Metabolic activities of hibernators slowdown in this dormant stage.4. Metabolic activities of aestivators remain low during aestivation period.
5. Hibernation helps in maintaining the body temperature and prevents any internal body damage due to low temperatures.E.g. Bats, birds, mammals, insects, etc. show hibernation.5. Aestivation helps in maintaining the body temperature by avoiding the excessive water loss and thus prevents any internal body damaged due to high temperatures.E.g. Bees, snails, earthworms, salamanders, frogs, earthworms, crocodiles, tortoise, etc. show aestivation.

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