Some organisms are unable to migrate so they might avoid the stress by escaping in time. These organisms suspend their metabolic functions during the stressful ** and resume their functions at the return of favourable conditions. e.g. the winter sleep of animals such as bear called hibernation and summer sleep of certain animals like few snails and fish known as aestivation.
Fungi slow down their metabolic rate and form thick-walled spores to overcome stressful conditions. These spores germination takes place when the conditions become suitable.
