Biology 2023 JAMB Past Questions - Question 22:  A certain savanna grasshopper changes colour from green during the rainy season to brown during the dry season and, black after the dry season bush fires. The reason for these colour changes is that the

Correct Answer

C

Explanation

The reason for these color changes in the savanna grasshopper is likely to be related to adaptation for camouflage and thermoregulation.

1. Green during the rainy season: This coloration helps the grasshopper blend in with the lush green vegetation characteristic of the rainy season. This adaptation provides camouflage against predators such as birds and mammals.
2. Brown during the dry season: As the vegetation dries up and turns brown during the dry season, the grasshopper's brown coloration helps it blend in with the surroundings, providing camouflage and protection against predators.
3. Black after the dry season bush fires: Following bush fires that often occur in the savanna after the dry season, the landscape may be charred black. The black coloration of the grasshopper after the fires likely helps it blend in with the burnt environment, offering camouflage and protection from predators.

These color changes demonstrate an adaptation that allows the grasshopper to survive and thrive in its habitat by avoiding predation and regulating its body temperature effectively.