Which of the following best explains why tropical plants may lose function at temperatures as high as 10-degree celsius, while alpine plants can function at temperatures close to freezing?
1) Tropical plants have adapted to warmer temperatures and cannot tolerate colder temperatures.
2) Alpine plants have adapted to colder temperatures and cannot tolerate warmer temperatures.
3) Tropical plants have a higher tolerance for extreme temperatures compared to alpine plants.
4) Alpine plants have a higher tolerance for extreme temperatures compared to tropical plants.