Distinguish between hibernation and aestivation.(b) Give two behavioural adaptations of desert animals.

Question

Q.17 (a) Distinguish between hibernation and aestivation. (b) Give two behavioural adaptations of desert animals.

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Answer: (a) HibernationAestivation Winter sleep: a state of inactivity during the cold winter.Summer sleep: a state of inactivity during the hot, dry summer. Helps to escape extreme cold and shortage of food.Helps to escape heat and desiccation (water shortage). Examples: bears, bats, frogs in cold regions.Examples: snails, lungfish, some frogs and desert animals. (b) Behavioural adaptations of desert animals (any two): They are nocturnal — active at night and hide in burrows during the hot day (e.g. desert rat, snakes). They aestivate in burrows during the hottest part of the year. They remain in shade and reduce activity during the day to reduce water loss.

Distinguish between hibernation and aestivation.(b) Give two behavioural adaptations of desert animals.

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Hibernation	Aestivation
Winter sleep: a state of inactivity during the cold winter.	Summer sleep: a state of inactivity during the hot, dry summer.
Helps to escape extreme cold and shortage of food.	Helps to escape heat and desiccation (water shortage).
Examples: bears, bats, frogs in cold regions.	Examples: snails, lungfish, some frogs and desert animals.