Which of the following statements explains why the sugar glider and the flying squirrel both have the ability to glide? A) Both evolved at the same time in geologic history. B) Both interbred and blended their gene pools in the past. C) Both learned to glide by imitating the same kinds of bird species. D) Both adapted to similar niches in which gliding increased their chances of survival.
The Correct Answer and Explanation is :
The correct answer is D) Both adapted to similar niches in which gliding increased their chances of survival.
Explanation:
Sugar gliders and flying squirrels, though belonging to different taxonomic families, both exhibit the ability to glide. This trait is an example of convergent evolution, where unrelated species evolve similar traits because they face similar environmental pressures and selective forces. In the case of these two species, both adapted to life in the trees, and gliding helped them survive and thrive in their respective environments.
Both the sugar glider and the flying squirrel inhabit forests, where they forage for food, escape predators, and travel between trees. Gliding, as an ability, gives these species a distinct advantage. It allows them to cover large distances without needing to descend to the ground, where they would be more vulnerable to predators. By gliding from tree to tree, they can find food more efficiently, escape danger more easily, and increase their chances of survival.
This ability did not arise because of shared ancestry or interbreeding (ruling out answers A and B), nor did it result from imitating bird species (ruling out answer C). Instead, both species independently developed this gliding ability through natural selection, as the environmental pressures they faced favored those individuals who could glide.
In summary, convergent evolution is the reason these two species have similar gliding abilities. They did not inherit this trait from a common ancestor but rather adapted to similar environmental challenges. By evolving gliding as a survival mechanism, both species were able to occupy ecological niches where being able to glide provided a clear advantage, such as escaping predators, foraging for food, and navigating forested habitats.