To escape from heat and desiccation , many animals undergo aestivation.

Answer

**Step-by-Step Solution:**

1. **Understanding Aestivation**: Aestivation is a physiological state that some animals enter to escape extreme heat and desiccation (drying out). It is often referred to as "summer sleep," where the animal reduces its metabolic rate to conserve energy and water.

2. **Identifying Organisms that Undergo Aestivation**: Various animals, including certain species of snails, amphibians, and fish, utilize aestivation as a survival strategy during hot and dry conditions.

3. **Comparing Aestivation with Other Strategies**: Aestivation is one of the strategies animals use to cope with environmental stress. Other strategies include migration (moving to a more favorable environment) and forming spores (as seen in some bacteria and fungi).

4. **Conclusion**: The statement in the question is correct. Many animals do undergo aestivation to escape from heat and desiccation, effectively allowing them to survive in harsh summer conditions.

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