Question

Explain with the help of suitable examples, the three different ways by which organisms overcome their stressful condition lasting for a short duration.

Answer 1

Hint: The unfavorable condition where the organisms face problems to sustain their biological activities like feeding, breeding, etc is called a stressful situation. These situations can be avoided by the organisms by using some ways and techniques. Animals including humans face several stressful conditions during their lifespan.

Complete answer:
Organisms can overcome their stressful condition in various ways. Three of them are given below.
> Migration: migration can make an organism stress-free temporarily. Many organisms like bird fishes migrate from one place to another to avoid stressful habitats temporarily. They prefer a more hospitable area for some time to fulfill their necessary biological activity like breeding, flooding etc. An example of a migratory bird is a great grey owl. The bird migrates from one place to another if there is enough good is not available.
> Summer sleep: summer sleep is also known as aestivation. It is a dormant phase of many animals where the necessary activities of the body like metabolic activity are reduced. The prevention of metabolic activity leads to the conservation of energy. Aestivation is an important way to stress relief for many organisms like insects, Mollusca, etc. Helix sp. A land snail undergoes summer sleep during the heated atmosphere.
> Hibernation: Hibernation is also a dormant state of some organisms where the metabolic rate of their body decreases during the winter. It is commonly found in the polar bear.

Note:
Organisms can use other different ways to overcome the stressful condition. These are the formation of spore, diapause, dormancy, etc. Many bacteria and fungi produce spores during a hard situation. Germination occurs in these spores when suitable conditions come. Zooplankton possesses a metabolic condition (suspended) during a hard time called diapause.