Question

Which of the following is true regarding migration in animals?

• A. All animals migrate from one part of the world to another.
• B. Migration happens only among fishes and birds.
• C. Organisms that cannot conform or regulate may tend to migrate to escape stressful conditions.
• D. All of these.

Answer 1

The correct option is C Organisms that cannot conform or regulate may tend to migrate to escape stressful conditions.

Not every organism can conform or regulate to maintain a balance between its internal and external environments. Nevertheless, these organisms too, need to escape stressful conditions that they may encounter. Migration is one way by which many such organisms handle this. Migration is the long-distance movement of animals. It may occur in response to food availability, the specific season of the year or for mating. However, the term “migration” is used only if it happens as part of an animal’s life cycle, for instance, during the same season every year or travelling a few hundred metres every day. Most major animal groups such as insects, fish, birds and mammals exhibit migratory behaviour.