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Explain any two alternatives by which organisms can overcome stressful external conditions. - Biology

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ConceptOrganism and Its Environment Responses to Abiotic Factors

Question

Explain any two alternatives by which organisms can overcome stressful external conditions.

Solution

The alternatives by which organisms can overcome stressful external conditions are:

(i) Migrate: Some organisms migrate temporarily from an unfavourable habitat to a more favourable habitat and return when the favourable period is over. Example: Migratory birds move from very cold northern regions to warmer places.

(ii) Suspend: Some organisms avoid the unfavourable environment by escaping from it. Example: Polar bears hibernate during winter to escape extreme cold. Some snails and fish undergo aestivation to avoid summer-related problems such as heat and desiccation.

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Solution Explain any two alternatives by which organisms can overcome stressful external conditions. Concept: Organism and Its Environment - Responses to Abiotic Factors.
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