In one to two sentences, identify the purpose of the roots in a plant and how a disease that harms the roots of a flowering plant would affect the plant's ability to survive.

The purpose of roots in a plant is to anchor it in the soil, absorb water and nutrients, and store food reserves. If a disease harms the roots of a flowering plant, it would affect the plant's ability to absorb water and nutrients, causing it to wither and eventually die due to the lack of essential resources.