Why can’t tundra plants have long roots?

The tundra is a natural area. It lies outside the northern limits of forest vegetation and precedes the arctic region. The tundra soil is characterized by permafrost, which means that, starting from a certain depth, the soil always remains icy and never thaws.

Tundra plants cannot have roots that go deep underground due to the hardness of the soil, especially trees. However, they have adapted to get the maximum water from the soil through creeping roots.