Sunday 8 December 2013

HIBERNATION, AESTIVATION AND DIAPAUSE-NCERT 12

HIBERNATION- (BEARS) - is a time when animals ‘sleep’ through cold weather. It is but one of many forms of metabolic suppression

AESTIVATION(SNAILS AND FISHES) - hibernation during summer.

DIAPAUSE(ZOOPLANKTONS)-is a stage of suspended development. When referencing animal dormancy, is the delay in development in response to regularly and recurring periods of adverse environmental conditions.

1. Bear hibernates whereas some species of zooplanktons enter diapause to avoid stressful external conditions. How are these two ways different from each other?

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